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Yuyao Jinqiu Plastic Mould Co., Ltd.
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Yuyao Jinqiu Plastic Mould Co., Ltd.

Yuyao Jinqiu Plastic Mould Co., Ltd. located in Yuyao City, Zhejiang Province, a city well-known as "Hometown of Moulds" and "Kingdom of plastic". We specialize in manufacturing high-precision plastic injection and blow mould, produce injection and blowing products.more than 30 years' development make us from a small factory to Medium-sized enterprise. As a member of China Die & Mould Industry Association and director of Yuyao Mould Association unit. We have ISO9001 approved and famous in ...
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China Yuyao Jinqiu Plastic Mould Co., Ltd.

1996

Year Established

16.000.000 +

Annual Sales

150 +

Employees

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How much do you know about the hardness of the material?
2025-01-04
In order to ensure the performance and life,the material of the cutter,measuring tools and molds which used in mechanical manufacturing,should have enough hardness should have enough hardness.   Today,I will discuss about the hardness of material with you   Hardness is a measure of material’s ability to resist local deformation,especially plastic deformation,indentation or scratch.Generally,the more hardness of the material,the better its wear resistance,such as gear and other mechanical parts will require a certain hardness to ensure sufficient wear resistance and service life.   Types of hardness     As shown above,there used to be so many types of hardness.I will introduce you to the common and practical indentation hardness test in metal hardness.   Definition of hardness   1. The Brinell Hardness The Brinell hardness(symbol HB) test method,which has become an accepted hardness specification,is one of the first methods to be developed and summarized,and it has contributed to the emergence of other hardness test methods. The principle of Brinell hardness test is: the indenter (steel ball or carbide ball, diameter Dmm) applies the test force F, after the specimen is pressed, the contact area S(mm2) between the ball indenter and the specimen is calculated in the concave diameter d(mm) left by the indenter, and the value obtained by the test force is excluded. When the indenter is a steel ball, the symbol is HBS, and when the cemented carbide ball is HBW. k is a constant (1/g= 1/9.80665 = 0.102). 2. The Vickers hardness Vickers hardness (symbol HV) is the most widely used test method that can be tested with any test force, especially in the field of small hardness below 9.807N. The Vickers hardness is the value obtained by dividing the test force F(N) by the contact area S(mm2) between the standard plate and the indenter, calculated based on the diagonal length d(mm, the average length in both directions) of the indentation formed on the standard plate by the indenter (tetragonal coned diamond, relative surface Angle =136˚) at the test force F(N). k is a constant (1/g=1/9.80665) 3. The knoop hardness The Knoop hardness (symbol HK), as shown in the following formula, is calculated by dividing the test force by the indentation projection area A (mm2) based on the longer diagonal length d (mm) of the indentation formed on the standard sheet at the test force F by pressing the long diamond indenter with relative side angles of 172˚30' and 130˚. Knoop hardness can also be measured by replacing the Vickers indenter of a microhardness tester with Knoop indenter. 4. The Rockwell hardness The Rockwell hardness (symbol HR) or Rockwell surface hardness is measured by applying a preload force to the standard sheet using a diamond indenter (tip cone Angle: 120˚, tip radius: 0.2mm) or a spherical indenter (steel ball or carbide ball), then applying a test force and restoring the preload force. This hardness value is derived from the hardness formula, which is expressed as the difference between the indentation depth h(μm) between the preloaded force and the test force. The Rockwell hardness test uses a preload force of 98.07N, and the Rockwell surface hardness test uses a preload force of 29.42N. The specific symbol provided in combination with the indenter type, test force, and hardness formula is called a scale. The Japanese Industrial Standards (JIS) define various related hardness scales.   HR(Diamond indenter, Rockwell hardness)=100-h/0.002 h:mm HR(Ball indenter, Rockwell hardness)=130-h/0.002 h:mm HR(Diamond/ball indenter, surface Rockwell hardness)=100-h/0.001 h:mm     Hardness testing machines are widely used because they are simple and quick to operate and can be tested directly on the surface of raw materials or parts. Hardness Selection Guide Selection guide for hardness testing methods for your reference: Material Micro Vickers hardness (Knoop hardness) Tiny surface material properties Vickers hardness Rockwell hardness Surface Rockwell Brinell Hardness Shore hardness (HS) Shore hardness(HA/HC/HD) Leeb hardness IC chips ● ●               Tungsten carbide, ceramics (cutting tools)   ▲ ● ●     ●     Iron & Steel Materials (Heat Treatment Materials) ● ▲ ● ● ●   ●   ● Non-metallic materials ● ▲ ● ● ● ●       Plastic   ▲   ●           grinding wheel       ●           Castings               ●   Rubber, sponge           ●           shape Micro Vickers hardness (Knoop hardness) Tiny surface material properties Vickers hardness Rockwell hardness Surface Rockwell Brinell Hardness Shore hardness (HS) Shore hardness(HA/HC/HD) Leeb hardness Sheet metal (safety razor, metal foil) ● ● ●   ●         Sheet metal (safety razor, metal foil) ● ●               Small parts, needle-shaped parts (clocks, watches, sewing machines) ● ▲               Large-format specimens (structures)             ● ● ● Microstructure of metallic materials (phase hardness of multilayer alloys) ● ●               plastic plates ▲ ▲   ●   ●       Sponge, rubber sheet           ●           Inspection, judgment Micro Vickers hardness (Knoop hardness) Tiny surface material properties Vickers hardness Rockwell hardness Surface Rockwell Brinell Hardness Shore hardness (HS) Shore hardness(HA/HC/HD) Leeb hardness The strength and properties of the material ● ● ● ● ● ● ▲ ● ● Heat treatment process ●   ● ● ●   ▲   ▲ Carburizing hardening layer thickness ●   ●             Decarburization layer thickness ●   ●   ●         Flame and high-frequency quenching hardening layer thickness ●   ● ●           Hardenability test     ● ●           The maximum hardness of the welded part     ●             The hardness of the welded metal     ● ●           High-temperature hardness (high-temperature characteristics, hot workability)     ●             Fracture toughness (ceramic) ●   ●               Hardness selection conversion Knoop to Vickers conversion Based on the fact that objects with the same hardness have equal resistance to the two types of Knoop Vickers indenters, the stress of the two types of Vickers Knoop indenters under load is deduced respectively, and then according to σHK=σHV, HV=0.968HK is obtained. This formula is measured under low load, and the error is relatively large. In addition, when the hardness value is greater than HV900, the error of this formula is very large, and the reference value is lost. After derivation and correction, the conversion formula of Knoop hardness and Vickers hardness is proposed. Verified by actual data, the maximum relative conversion error of the formula is 0.75%, which has high reference value. Conversion of Rockwell to Vickers To Hans· The Qvarnstorm conversion formula proposed by Qvarnstorm is modified to obtain the conversion formula of Rockwell hardness to Vickers hardness: This formula is converted with the standard data of ferrous metal hardness published in China, and its HRC error is basically within the range of ±0.4HRC, its maximum error is only 0.9HRC, and the maximum calculated HV error is ±15HV. According to the stress σHRC=σHV of different indenters, the formula is obtained by analyzing the relationship curve between Rockwell hardness and Vickers hardness indentation depth. This formula is compared with the national standard experimental conversion value, and the error between the calculation result of the conversion formula and the standard experimental value is ±0.1HRC. According to the actual experimental data, the conversion of Rockwell hardness to Vickers hardness is discussed by linear regression, and the formula is obtained: This formula has a small range of use and a large error, but it is easy to calculate and can be used when the accuracy is not high. Conversion of Rockwell to Brinell hardness The relationship between Brinell indentation and Rockwell indentation depth was analyzed, and the conversion formula was obtained according to the stress σHRC=σHB of the indenter. The error between the calculated results and the standard experimental values is ±0.1HRC. According to the actual experimental data, the formula was obtained by linear regression method. The formula error is large, and the range of use is small, but the calculation is simple, and it can be used when the accuracy is not high. Conversion of Brinell to Vickers The relationship between Brinell hardness and Vickers hardness is also based on σHB=σHV. The conversion result of this formula is compared with the conversion value of the national standard, and the conversion error is ±2HV. Knoop to Rockwell conversion Because the corresponding curves of Knoop and Rockwell are similar to parabolas, the approximate conversion formula is derived from the curves. This formula is accurate and can be used as a reference.
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What material is used for cosmetic mold?
2022-11-22
Cosmetic packaging materials are divided into the main container and auxiliary materials. The main container usually includes: plastic bottles, glass bottles, hoses, and airless bottles. dao auxiliary materials usually include: color box, office box, middle box 1. Plastic bottle 1. The material of plastic bottle is usually PP, PE, K material, AS, ABS, acrylic, PET, etc. 2. Generally used in cosmetics containers with thicker walls, cream bottles, bottle caps, stoppers, gaskets, pump heads, and dust covers are injection molding; PET blow molding is two-step molding, tube embryo is injection molding, and finished product packaging For blowing. Others, such as emulsion bottles and washing bottles with thin container walls, are blown bottles. 3. The PET material is an environmentally friendly material with high barrier properties, light weight, non-breaking characteristics, chemical resistance, and strong transparency. It can be made into pearlescent, colored, magnetic white, and transparent, and it is widely used in gel water. The bottle mouth is generally standard 16#, 18#, 22#, 24# caliber, which can be used with pump head. 4. The acrylic material is made of injection molding bottle, which has poor chemical resistance. Generally, it cannot be directly filled with paste. It needs to be blocked by an inner tank. The filling is not easy to be too full to prevent the paste from entering between the inner tank and the acrylic bottle. In order to avoid cracks, the packaging requirements are high during transportation. It looks particularly obvious after scratches, has high permeability, and the sensory upper wall is very thick, but the price is quite expensive. 5. AS, ABS: AS has better transparency and toughness than ABS. 6. Mold development costs: blowing molds are 1,500 yuan-4,000 yuan, injection molds are 8,000 yuan-20,000 yuan, molds made of stainless steel are more expensive than alloy materials, but they are durable. Several molds can be produced at a time. The demand for production volume, if the production volume is large, you can choose a mold with four or six molds, and the customer can decide by himself. 7. The order quantity is generally 30,000 to 10,000, and the color can be customized. Usually, the primary color is frosted and magnetic white, or the pearl powder effect is added. Although the bottle and cap are matched with the same color master, sometimes due to the bottle and cap The materials used are different, and the colors displayed are somewhat different. 8. The screen printing has ordinary ink and UV ink. UV ink has better effect, gloss and three-dimensional effect. You should make a plate to confirm the color during production. The effect of screen printing on different materials will be different. 9. The processing technology of bronzing and silver bronzing is different from that of printing gold powder and silver powder. The hard material and smooth surface are more suitable for bronzing and silver bronzing. The hot stamping effect of soft surface is not good, easy to fall off, and the gloss of bronzing silver Degree is better than printing gold and silver. 10. The silk screen film should produce negative film, the graphic effect is black, the background color is transparent, the hot stamping and silver process should produce positive film, the graphic effect is transparent, and the background color is black. The proportion of text and pattern should not be too small or too thin, otherwise the effect will not be printed. 11. Bottle caps are generally equipped with inner gaskets, pull caps, and inner plugs. Very few are equipped with small spoons or droppers. This is mainly due to its tightness and ease of use. 12. The production cycle is relatively moderate, about 15 days. The silk-screened cylindrical bottle is calculated as a single color, and the flat bottle or special-shaped bottle is calculated as two-color or multi-color. Usually, the first silk-screening fee or fixture fee is charged. The unit price is generally 0.08 yuan/color order to 0.1 yuan/color order, the screen version is 100-200 yuan/model, and the fixture is about 50 yuan/unit. Second, the glass bottle 1. Glass bottles used in cosmetics are mainly divided into: skin care products (creams, lotions), perfumes, essential oils, and nail polishes. The capacity is small, and the capacity larger than 200ml is rarely used in cosmetics. 2. Glass bottles are divided into wide-mouthed bottles and narrow-mouthed bottles. For solid pastes, a wide-mouthed bottle is generally used. It is suitable to be equipped with aluminum or plastic caps. The caps can be used for color spraying effects; emulsion or liquid Generally, narrow-mouth bottles are used for pastes, and pump heads should be used. Take care to prevent springs and balls from rusting. At present, most pump heads are equipped with glass beads, which are usually used for material testing. For example, a cover needs to be equipped with an inner plug. The small hole is the same as the inner plug for the liquid, and the larger hole is used for the thicker emulsion. 3. The glass bottles are more consistent in material selection, with more shapes, rich processing techniques, and diversified matching with bottle caps. Common bottle shapes include cylindrical, oval, flat, prismatic, and cone shapes. Manufacturers often develop series of bottle shapes. The bottle body process includes spraying, transparent, frosted, translucent toning, silk screen, bronzing, and silver bronzing. 4. Silk screen printing: There are usually two types of glass bottle screen printing. One is high temperature ink screen printing, which is not easy to decolorize, the color is dull, and it is difficult to produce purple color tones. The other is low temperature ink screen printing, which has brighter color. Higher requirements for ink, otherwise it is easy to fall off, and attention should be paid to bottle disinfection. 5. The effect of spraying generally requires an additional 0.5 yuan-1.1 yuan per piece, depending on the area and the difficulty of toning. The silk screen is 0.1 yuan per color. Cylindrical bottles can be calculated as a single color, and special-shaped bottles are calculated as two-color or multi-color , Bronzing and silver 0.4 yuan/section. 6. If the glass bottle is made by hand mold, there will be a little deviation in the capacity. It should be tested and marked correctly when selecting. For example, the automatic production line is more uniform, but the shipment volume is relatively large and the cycle is relatively long. The capacity is relatively stable. 7. The uneven thickness of the glass bottle can easily lead to damage, or it is easy to be squeezed by the content under severe cold conditions. A reasonable capacity should be tested during filling. The transportation should be carried by paper and separated individually. The product should be Equipped with a color box, the inner support and the middle box can be more anti-vibration effect. 8. Commonly used bottle shapes for glass bottles are usually in stock, such as essential oil bottles, ordinary transparent or frosted bottles. The production cycle of glass bottles is long, it takes 20 days as fast as possible, and some supply periods take 45 days. Generally, the order quantity is 5,000 to 10,000. The smaller the bottle type, the larger the quantity to be made. The cycle and the minimum order quantity will be both. Affected by peak season and off-season. 9. Mold opening cost: manual mold is about 2,500 yuan, automatic mold is generally about 4,000 yuan, 1 out of 4 or 1 out of 8 costs about 16,000 to 32,000 yuan, depending on the manufacturer's conditions. 10. The bottle cap process can be used for electrochemical aluminum lettering, bronzing, and etched lines. There are matte and bright colors. It must be equipped with gaskets and inner caps. It is best to use pressure-sensitive sheets to enhance the sealing effect. 11. Essential oil bottles are usually made of brown or colored and colored matte, which can avoid light. The lid has a safety ring and can be equipped with an inner plug or a dropper. The perfume bottle is usually equipped with an exquisite spray pump head or plastic cap. Three, hose 1. The hose is divided into single-layer, double-layer, and five-layer hoses, which are different in terms of pressure resistance, anti-permeability and hand feel. For example, the five-layer tube consists of an outer layer, an inner layer, and two adhesive layers. Barrier layer. Features: It has excellent gas barrier properties, which can effectively prevent the infiltration of oxygen and peculiar smell gas, and prevent the leakage of the content fragrance and effective ingredients. 2. Double-layer pipes are more commonly used. Single-layer pipes can be used for medium and low-grade pipes. The diameter of the hose is 13#—60#. When a hose of a certain diameter is selected, different capacity characteristics are indicated by different lengths. , The volume can be adjusted at will from 3ml to 360ml. In order to be beautiful and coordinated, the caliber below 60ml is commonly used under 35#. For 100ml and 150ml, the caliber 35#—45# is usually used. For the volume above 150ml, the caliber above 45# is required. 3. The technology is divided into round tube, oval tube, flat tube and super flat tube. Flat tube and super flat tube are more complicated than other tubes. They are also new types of tubes in recent years, so the price is correspondingly more expensive. 4. Hose caps have various shapes, generally divided into flat caps, round caps, high caps, flip caps, super flat caps, double-layer caps, spherical caps, lipstick caps, and plastic caps can also be processed in a variety of processes, bronzing Edge, silver edge, colored cap, transparent, oil spray, electroplating, etc., tip cap and lipstick cap are usually equipped with inner plug. Hose caps are injection molded products and hoses are drawn tubes. Most hose manufacturers do not produce hose caps themselves. 5. Some products need to be filled before sealing. The sealing can be divided into: straight pattern sealing, diagonal pattern sealing, umbrella sealing, star point sealing, special-shaped sealing, and sealing can be required when sealing. Print the required date code at the end. 6. The hose can be made of colored tubes, transparent tubes, colored or transparent frosted, pearlescent tubes, and there are matte and bright points. The matte looks elegant but easy to get dirty. The difference between colored tubes and large-area printing on the tube body can be Judging from the incision at the tail, the white incision is a large-area printing tube, and the ink required is high, otherwise it will easily fall off and will crack and expose white marks after being folded. 7. The hose production cycle is generally 15 days to 20 days (from the confirmation of the sample tube), the order quantity for a single product is 5,000 to 10,000. Large-scale manufacturers usually order 10,000 as the minimum quantity, which is very small. If the manufacturer has a large variety, the single product can be ordered with a minimum order quantity of 3,000. Few customers open the molds by themselves. Most of them are public molds (a few characteristic lids are private molds). There is a deviation of ±10% in this industry. 8. There are big differences in the quality of the hose and the price of different manufacturers. The plate-making fee is usually 200 yuan to 300 yuan. The tube body can be multi-color printing and silk screen printing. Individual manufacturers have thermal transfer equipment and technology. Hot stamping and hot stamping are calculated based on the unit price of the area. The screen printing effect is better, the cost is more expensive and there are fewer manufacturers. Different manufacturers should be selected according to the needs of different levels. Four, distributor/pump head 1. Distributors are divided into two types: tie-type and screw-type. In terms of function, they are divided into spray, foundation cream, lotion pump, aerosol valve, and vacuum bottle. 2. The size of the pump head is determined by the caliber of the matching bottle. The spray specification is 12.5mm-24mm, and the water output is 0.1ml/time—0.2ml/time. It is generally used for packaging perfumes, gel water and other products. The caliber The length of the same tube can be determined according to the height of the bottle. 3. The specification range of the lotion pump is from 16ml to 38ml, and the water output is 0.28ml/time-3.1ml/time. It is generally used for creams and washing products. 4. Special dispensers such as foam pump heads and hand-button sprinklers. The foam pump head is a non-gas-filled hand-pressure pump head, which does not need to be filled to produce foam, and can produce quantitative high-quality foam with light pressure. . Usually comes with a dedicated bottle. Hand-button sprinklers are usually used in products such as detergents. 5. The composition of the distributor is more complicated, generally including: dust cover, snap head, snap rod, gasket, piston, spring, valve, bottle cap, pump body, straw, valve ball (with steel ball, glass ball). Bottle caps and dust caps can be colored, electroplated, and can be covered with anodized aluminum rings. Since a set of pump heads involves many molds and the order quantity is large, the minimum order quantity is 10,000 to 20,000, and the delivery period is 15 to 20 days after the sample is confirmed. White and general-purpose types are often available in stock. 6. Airless bottles are usually cylindrical, with specifications ranging from 15ml to 50ml, and some have 100ml. The overall capacity is small. It relies on the principle of atmospheric pressure to avoid pollution caused by cosmetics during use. Vacuum bottles have anodized aluminum, plastic plating and colored Plastics are more expensive than other general containers, and the general order quantity is not high. 7. Distributor customers seldom open molds by themselves, they need more molds, and the cost is higher. Five, color printing 1. Color printing mainly includes color printing, color printing set boxes, manuals, leaflets, posters, picture albums and color printing stickers. 2. The requirements and selection of materials are complex. The packaging color box is also called a folding carton. Generally, 350g single copper paper is used. The appropriate thickness of cardboard can be selected according to the volume and internal weight. Different grades of paper can be selected. Corrugated cardboard can be used as the inner The lining is fixed, anti-vibration, or because the container is small, the size of the color box can be increased to increase the appearance. The design principle of the bottom of the box is to ensure strength and strive for simplicity, which will save time for manual assembly. 3. Color-printed sets of boxes, color-printed and then mounted, can be made in different specifications. The paper layer of color-printed mounting is single copper or aluminum-plated paper. Different specifications of gray paper or MDF can be selected. There are more manual work and higher cost. High, it is used with a hand bag, blister/sponge/paper support and silk cloth at the same time. 4. The manual can choose ordinary paper 60g-80g or 105g and 128g, 157g coated paper, and generally use more than 105g coated paper for leaflets, posters or picture albums. 5. For printing stickers, you can choose coated paper and various material stickers, silver aluminum paper or transparent PVC and other materials. 6. In order to ensure the design effect, and to have actual samples comparable in color printing and documentary, computer proofing can be carried out when the film is output, and the fee is charged according to the color and size, usually 75 yuan/P 7. The process and appearance effects that can be done in color printing include surface polishing or gloss glue, matte glue, laser film, hot gold and silver and bumping effects, beer, glue box forming or bonding PVC film (also called windowing) and Thermal sensitivity, colorful onion craft, uv effect, etc. 8. Thermal embossing process, there is no need to hit the embossing after printing, there is an obvious three-dimensional effect, the thermal embossing powder has fluorescent, matte and various color effects, and the color onion process (used more in greeting cards) 9. The laser has two colors, silver card and gold card, and can be made into rainbow and partial hologram coated cards, which has a high anti-counterfeiting effect. 10. The frosting process is suitable for aluminized film and aluminum foil paper. The process features a strong metallic sense, harmonious and noble color, comfortable hand feeling, and metal etching effect. 11. Color printing charging standards and features: A) Design, electrical output, proofing, and calculate according to P; B) Color printing start-up fee (800 yuan-1200 yuan) minimum consumption, reasonable typesetting and increased printing volume can reduce the unit price. C) Determine the impact of related costs according to the amount and difficulty of the subsequent processes, such as over-light glue, riding nails, folding, and over-pressing Glue has corresponding charging standards and minimum consumption. 12. The production cycle generally takes 3 to 5 days for color printing. Depending on the difficulty of the process, the workday is appropriately increased for the set box. If the set box is mounted, too much glue is used, and the delivery period will also be affected by the weather. 13. Matters needing attention: A) In order to avoid large deviations between the finished product and the design color sample, it should be proofed and confirmed when printing on the machine and used as a quality inspection standard. B) The folding method of the manual should be clear and unified, and the transportation packaging of color printing should be explained. If it is a set box, consider the second use. C) The handle bag can be designed to open on one side and on both sides, which can save costs in printing and film output. D) The printing volume refers to the weight of the paper, not the quantity of the finished product after printing. If the size of the manual is small, a larger quantity is required to be an economic order E) The design must meet the requirements of color printing specifications. For example, the hot stamping film should produce negative films, and other positive films, the composition method must adapt to the printing characteristics. 14. If the quantity is small and can not meet the minimum printing order or the more economical order quantity, the box can be mounted directly through the effect of colored paper to reduce the cost. Sixth, aluminum platinum bag 1. According to the material, there are pure aluminum bags, aluminized bags, PV, PE, BOPP, PET, PEGT bags, etc. 2. There are three-side sealing bag, middle sealing bag, bone-fitting bag, upright bag, vacuum bag and roll bag. 3. Aluminum platinum bag and shrink film material characteristics: high-barrier plastic packaging material that is good for freshness, quality and shelf life. It has low cost, light weight, impact resistance, transparency, microwave heating, convenience and wide choice of packaging design options Features. 4. The pure aluminum bag has a metallic texture, is easy to crease, and can be color-printed. The aluminum-plated bag can be printed in matte or bright light, and is soft. It is suitable for the trial packaging of emulsion and paste. PET, aluminized PET, CPE are suitable for shampoo or liquid, BOPP/CPE is suitable for daily necessities such as washing powder. 5. The cost of pure aluminum bags is about 30% higher than the unit price of galvanized bags, and the economic order is larger. Large manufacturers use smaller manufacturers to make higher orders. Take 4cm×10cm bags as an example. Large manufacturers generally order 100,000 units. For small manufacturers, the MOQ is about 30,000. For roll film, it can be made from 30 to 50 kg without printing, about 38 yuan/kg. For printing, the MOQ is about 100kg, about 45 yuan/kg, roll film Special filling equipment is required, and the number of roll film bags is 6cm×9cm, for example, 10g
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What should pay attention to when selecting materials for commodity molds
2022-11-22
The mass production of daily necessities is basically completed through the relevant daily necessities molds, and it is precisely because of the existence of molds that people can buy basically the same products. Therefore, the model is very important for the supplies industry, so what should be paid attention to in the selection of mold materials for daily necessities? Let's get to know.   1: Abrasion resistance   Wear resistance is very important for commodity molds, so we need to consider this aspect when selecting materials, and ingredients will rub repeatedly in the mold during production, so if the wear resistance is relatively poor, mold damage or wear is very easy to occur once it is used for a long time, and there will be errors for the products produced, In fact, the product error has a specified range. If the error is very large, then it cannot be used. Therefore, if the material is poor, it will cause unnecessary cost waste, and the overall use time is relatively short.   2: Strength and toughness   In terms of strength and toughness, it is mainly because the working environment of most commodity dies is not a relatively good one, and they actually need to bear a large stamping load for a long time during use. Therefore, if the strength and toughness are poor, it is very easy to lead to brittle fracture. If brittle fracture occurs in the process of use, there will be a relatively large overall problem. Therefore, when selecting materials for commodity molds, we should make certain requirements on strength and toughness. In fact, we can judge this by the carbon content of materials, organizational state and other details.   3: Fatigue fracture property   The requirements for the fatigue training performance of the materials of commodity molds are mainly to avoid the fatigue fracture of the materials in long-term use. Because in the specific use process, small energy repeated impact is very easy to cause such problems, so if the effect is relatively poor, it is very easy to fracture in the use process, leading to other hidden safety problems. Oh, for the specific details in this regard, you can consider the strength, toughness and hardness of the material itself, and even learn about the specific composition ratio. If there are many impurities, there is a high probability of problems in this area.   4: High temperature performance   The molds are basically used in the high temperature environment. Therefore, if the working temperature is relatively high, but the high temperature performance of the materials is relatively poor, the overall hardness and strength will decline, causing wear or deformation of the molds. Therefore, in terms of material selection for commodity molds, the requirements for high temperature systems must be very high, because the high temperature resistance of most metals is not particularly good, but the high temperature environment is a necessary condition for the work of such materials, so we must pay attention to the stability of materials under high temperature in the process of material selection.   In addition to the above, you can also pay attention to the professionalism of the manufacturers. The manufacturers with a high degree of professionalism have a clear basis for material selection. For example, Kaidi will evaluate the materials and then put them into production.
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