What are the characteristics of mold materials

Die steel can be divided into three categories according to its use:1Cold Work Die Steel 2Hot Work Die Steel 3Plastic mold steel.

Features: Cold work die steel focuses on hardness, wear resistance, high carbon content, alloying elements to increase hardenability, improve wear resistance.

Hot work die steel has appropriate hardness requirements, focusing on red hardness, thermal conductivity and wear resistance, so the carbon content is low, and the alloying elements are to.

Increase hardenability, improve wear resistance, red hardness.

Plastic mold steel has good corrosion resistance, wear resistance, thermal fatigue resistance, and uniform hardness of the material. Superior polishing performance and low impurity content.

The production cycle is stable.

First of all, molds are divided into two categories: cold work molds and hot work molds. Cold work dies include stamping, cold extrusion, forging dies, etc.; Hot work molds include die casting, injection molding, etc. The quenched parts of the cold work die normally include CR12, CR12MOV, 9542, W18CR4V.

Hot work mold (die-casting mold) Normal use of high-temperature resistant materials Commonly used such as H13, 3Cr2W8V, Injection molds normally use 45 and 40Cr, if the size and parting surface requirements of the product are higher, the cavity material of the injection mold can also be used Cr12.

There is a wide range of mold materials. Generally, it refers to die steel, alloy steel, tool steel, high-speed steel, bearing steel, etc.

It is divided into three categories: plastic mold steel, die-casting mold steel, cold stamping die steel Shanghai Juncang Metal Products**** 021-57624469

I don't know what kind of features you're asking about, material identification, or ???

Characteristics of mold manufacturing process

1) When processing the mold, try to use universal general machine tools, general knife measuring tools and instruments, and reduce the number of special second-class tools as much as possible.

2) In the design and manufacture of the mold, the actual matching method, the same boring method, etc., are more used, so that the interchangeability of the mold parts is reduced, which is an effective measure to ensure the processing accuracy and reduce the processing difficulty. In the future, the degree of interchangeability will increase with the improvement of processing technology.

3) In the arrangement of manufacturing processes, the processes should be relatively centralized to ensure the quality and progress of mold processing, simplify management and reduce process turnover time.

Mold design and manufacturing aims to cultivate senior application-oriented technical talents in mold design and manufacturing, graduates can be engaged in the design and manufacture of molds and tooling required for enterprise production, mold assembly and commissioning, and mold enterprise operation and management.

The main courses are: Mechanical Drawing, Mechanical Design and Basics, Cold Stamping Die Design and Manufacturing, Injection Mold Design and Manufacturing, CNC Technology and Programming, Mold Processing Machinery, Electrical and Electronic Technology, Hydraulic and Pneumatic Transmission, Metal Cutting Principles, Mechanical CAD CAM, etc.

The academic concept refers to the mold processing technology and production and maintenance.

The characteristics of the mold are that it requires high precision, complex structure, many processing processes, long service life, safe and convenient operation, and easy maintenance.

Hello, according to your problem description, the solution provided to you here is as follows: the processing characteristics of mold parts are as follows: 1. The increasing large-scale mold forming parts and the high productivity of parts require multiple cavities in one mold, resulting in the increasing size of the mold. Large tonnage molds can reach 100 tons, hundreds of cavities, thousands of cavities, requiring mold processing equipment large workbench, increased Y-axis Z-axis travel, large load-bearing, high rigidity, high consistency.

2. The mold steel material processed by the mold has high hardness, which requires the mold processing equipment to have thermal stability and high reliability. 3. The refinement of mold processing makes the composite and efficient processing equipment more interesting. High-speed milling has many advantages such as high hard materials, stable processing, small cutting force, and small heating and deformation of the workpiece, so that mold enterprises pay more and more attention to high-speed machining.

4. The combination of processing technology and green product technology will be taken into account when purchasing equipment, and the radiation and medium selection of electrical processing machine tools will be the factors affecting safety and environmental protection, and EDM milling technology will be developed in the field of mold processing in the future.

Commonly used materials for molds: T7, T8, T12, 6CrW2Si, 5CrMnMo, Cr12, Cr12MoV. The use of the mold is different, and the mold material used is different.

1. The mold is a tool that makes the blank into a workpiece with a specific shape and size under the action of external force. It is widely used in blanking, die forging, cold heading, extrusion, powder metallurgy parts pressing, pressure casting, as well as engineering plastics, rubber, ceramics and other systems.

In the molding process of compression molding or injection molding. The die has a specific profile or cavity shape, and the application of a profile shape with a cutting edge allows the blank to be separated (punched) according to the shape of the contour line. The shape of the inner cavity is applied so that the blank can be obtained.

The corresponding three-dimensional shape.

2. The mold generally includes two parts: the moving mold and the fixed mold (or punch and concave mold), which can be divided or combined. When separated, the workpiece is taken out, and when closed, the blank is injected into the mold cavity for forming. The mold is fine.

Dense tools, complex shape, bear the swelling force of the blank, have high requirements for structural strength, stiffness, surface hardness, surface roughness and machining accuracy, and the development level of mold production is one of the important symbols of the level of machinery manufacturing.

Commonly used plastic mold steels are: S, NAK80, NAK55, DAC, P20

Cold work die steels are commonly used: GS2379, DC53, DC11, SKD11, A2

Hot work die steel is commonly used: DH2F, GS die-casting steel is commonly used: GS2344, DAC, DAC55, SKD61 oil steel:

sgt、acd37、sks
、gs2510、df-2、df-3

High speed steel: SKH-9,

Take you to know the materials used to make molds, and it is very important to do a good job in mold selection.

T7, T8, T12, 6CrW2Si, 5CrMNMO, Cr12, Cr12MoV, etc. The use of the mold is different, and the mold material used is different. The above more common materials are for reference only.

Key parts, punches, dies, cutters commonly used CR12, CR12MOV, cross-sectional shape of the available carbide. 45 steel is commonly used for structural parts, and 20 steel or 20cr carburizing or nitriding are commonly used for guide pillars and guide bushings. Plastic mold 45 steel is the most used, and beryllium copper will be used if it needs to be cooled.

Most of the knowledge still needs to be learned in practice, and we must learn to adapt it according to our needs.

The commonly used materials for the manufacture of rubber molds are carbon structural steel (Q steel or 50 steel, ZG270-500 or ZG310-570 cast steel and cast aluminum, chromium-nickel steel, CRWMN, 9MN2V, 9SICR

From the second edition of Rubber Equipment and Mold (Chemical Industry Press) Editor-in-Chief: Liu Juyuan Liu Xichun Page 321 (7) Strength and stiffness 1Material selection.

Common Mold Materials: Working Temperature Forming Materials Mold Material<300 Zinc Alloy CR12, CR12MOV, GCR15, T8, Aluminum Alloy, Copper Alloy 5CRMNMO, 3CR2W CRSI, W18CR4V, 5CRNIMO, W6MO5CR4V2, Aluminum Alloy, Copper Alloy, Steel Titanium GH130, GH33, Titanium Alloy, Steel, Stainless Steel, Nickel Alloy K3, K5, K17, K19, GH99, IN100, c-6nx88、mar-m200、trw-nasa、wa。 >1000

Mold is a variety of molds and tools used in industrial production to obtain products by injection molding, blow molding, extrusion, die-casting, forging molding, smelting, stamping and other methods. It mainly realizes the processing of the shape of the item through the change of the physical state of the molded material. It is known as the "mother of industry".

It is widely used in blanking, die forging, cold heading, extrusion, powder metallurgy parts pressing, pressure casting, as well as the forming and processing of compression molding or injection molding of engineering plastics, rubber, ceramics and other products.

There are many types of molds, which are mostly divided into metal molds, non-metallic molds and powder molds according to the processing objects and processing technology of the molds. In the production of the mold, in addition to the mold itself, it also needs to be composed of the mold base, the mold base, the guide device and the ejection device of the workpiece.

Mold, in short, is a model, the products in the industry are not produced according to this model, so the importance of the mold is ineffable, most of the mountain products in life are inseparable from the mold, the mold plays an irreplaceable role in life.

The role of the mold:

1) The mold industry is an integral part of the high-tech industry. For example, the design and manufacture of integrated circuits in the high-tech field cannot be without precision progressive stamping dies and precision integrated circuit plastic packaging films for lead frames; The manufacture of the calculator's casing, plug-ins and many components must also have precision plastic molds and precision stamping dies; The development of digital electronics, including communication products, would not be possible without precision molds.

2) The mold industry is an important field of high-tech industrialization. The improvement of the technical level of mold manufacturing and the improvement of the technology of the mold industry are inseparable from the grafting of high and new technology.

3) The mold industry is an integral part of the equipment industry. As the basic process equipment, the mold naturally has its important position in the equipment industry.

4) The importance of the status of the mold industry also lies in the five pillar industries of the national economy - machinery, electronics, automobiles, petrochemicals and construction all require the development of the mold industry to echo with it to meet the needs of the development of the five pillar industries.

If you really haven't seen this, it's not clear in one or two sentences, and the buddy above has already given a standard answer.

If you still don't understand, you think like this, for example, if you want the upper to be shaped, there must be a last inside to support the upper, then this last is the mold. For example, the bricks used to build houses are made with a square box, which is also a mold. Including the clay pots used by primitive people in the Neolithic Age, they were also made from molds.

For example, buckets, lunch boxes, drinking glasses, household appliances, cars, etc., all the things you see and use are made of molds.

It can be said that without molds, there can be no civilization for mankind! Modern Westerners attribute the origin of molds to the shoemakers of the Germans (the Swedish region ruled by the former German emperors) in order to prove that Westerners were smarter than Orientals.

Molds have long appeared in ancient China, and the physical object that can be seen is "Ding", which is cast with molds and uses the waxing method, and to this day modern Chinese and modern West still cannot surpass the craftsmanship of the Shang Dynasty Chinese.

This is the pride of our culture.

For a modern country, the more developed a country's mold industry and the higher the level of mold, it will comprehensively improve all aspects of the whole society, and the stronger the country will be. Now our country is developing faster and faster, and the cutting-edge science and technology continue to succeed and break through, which has a relationship that cannot be ignored with China's mold industry technology in the past 20 years.

For example, 70% of the world's die-casting parts and die-casting molds are now produced in China, and you think about how much this has contributed to all walks of life in China. In addition to the unemployment factor in the United States, there is also a point that the automobile industry needs die-casting molds, die-casting production, plastic molds, and the technological leadership of plastic production is increasingly concentrated in China. The understanding of molds is not as good as that of mold engineers who graduated from training schools in our country.

You kind of get the idea.