What material should be used for the hot section screw mold of the punch press?

SKD-11 is preferred, and the hardness should be able to handle HRC 62 degrees or above. SKD11 is a kind of high-carbon and high-chromium alloy tool steel, which has high hardness and abrasiveness after heat treatment, and has the characteristics of strong hardenability and good dimensional stability, which is suitable for making high-precision and long-life cold work molds and thermosetting plastic molds. Heat treatment method, quenching:

Preheat 700 750 and then 1000 1050 to cool in still air. Tempering: heated to 150 200 , staying at this temperature and then cooling in still air.

Hardness: HRC 61 or above. Annealing:

Heat to 800 850 °C, stay at this temperature for 1 3 hours and let it cool down in the furnace. In addition, CR12 can also be used for molds with low requirements, which is more affordable.

The selection of aluminum alloy die-casting mold materials should be based on the size of the mold, the complexity of the structure, the requirements of the service life of the mold, and the cost of the mold. Aluminum alloy die-casting mold material selection, generally there are 4 kinds of material selection schemes.

Steel of cold stamping die: Cr12, Cr12MOV and CRWMN are used more to make punches and dies; Other accessories are made of 45 steel and grey cast iron.

Punch die refers to stamping die, and stamping die is used for cold work die steel.

Cold Work Molds: Cold work molds work at room temperature. The forming material of cold work mold is metal, such as: iron sheet, copper, aluminum, stainless steel, tinplate, galvanized sheet, etc. Cold work molds include metal stamping molds, drawing molds, cold heading molds, etc.

Cold work die steel: It is mainly used to make molds that are pressed and formed under cold state (room temperature) conditions. Such as cold stamping die, cold drawing die, cold pier die, cold extrusion die, embossing die, rolling die, etc.

The commonly used steel types of cold work die steel are: CR12 die steel, CR12MOV die steel, SKD11 die steel, D2 die steel, DC53 die steel, 2379 die steel, 2510 die steel, DF2 die steel, SKH-9 high speed steel, M2 high speed steel, ASP23 powder high speed steel, ASP60 powder high speed steel.

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

What material to use to make the mold should not depend on the size of the mold, but more to see the accuracy and output of the product to estimate the life of the mold. At present, most of the templates of precision high-speed stamping dies are imported SKD11, and the parts are mostly made of SKH-9, CD650 cemented carbide, ASP23, etc. General hardware molds mostly use domestic materials such as CR12 and DC53.

The materials used to make stamping dies are steel, cemented carbide, etc

Steel cemented carbide, zinc-based alloys, low melting point alloys, aluminum bronze, polymer materials, etc. At present, most of the materials used to manufacture stamping dies are mainly steel, and the types of materials commonly used for die working parts are: carbon tool steel, low-alloy tool steel, and high carbon.

High chromium or medium. Chromium tool steels, medium carbon alloy steels, high-speed steels, matrix steels, cemented carbide, steel-bonded cemented carbide, etc.

The metal stamping dies are beryllium copper BECU, steel plate SK, phosphor bronze PB, tinplate SPTE, aluminum AL, stainless steel plate SUS, foreign white copper NS, hot-rolled steel plate SECC, cold-rolled steel plate SPCC, etc. The better the plasticity of the metal stamping material, the larger the bright belt of the stamped product will be, and the smaller the fracture zone.

The hardness testing of metal stamping parts adopts Rockwell hardness tester. Small, stamped parts with complex shapes can be used to test flat surfaces that are too small to be inspected on a common benchtop Rockwell hardness tester.

Stamping parts processing includes blanking, bending, drawing, forming, finishing and other processes. The materials processed by stamping parts are mainly hot-rolled or cold-rolled (mainly cold-rolled) metal plate and strip materials, such as carbon steel plate, alloy steel plate, spring steel plate, galvanized sheet, tin plate, stainless steel plate, copper and copper alloy plate, aluminum and aluminum alloy plate, etc.

The PHP series of portable surface Rockwell hardness testers are ideal for testing the hardness of these stamped parts. Alloy stamping parts are the most commonly used parts in the fields of metal processing and machinery manufacturing. Stamping parts processing is a processing method that uses a die to separate or form a metal strip.

It has a wide range of applications.

1. The materials commonly used in the stamping die are approximately: A3 45 CR12 CR12MOV SKD11;

2. Upper and lower die holders: A3 or 45, 3 backing plates, baffle plates: 45 or CR12, 4 stripping plates and lower templates: CR12MOV or SKD11 (when punching thin or products with high precision, DC53 cryogenic treatment will be selected, with good stability.) These are enough for general molds!

5. The material of punch parts is generally SKD11, and the material of stainless steel will be SKH-9 or DC53 or ASP-23; DC53 is a little worse than SKH-9, ASP23 is better than SKH-9; There is also tungsten steel, which is generally used for special requirements, and it is expensive;

6. According to the material and thickness of different products, the material and thickness of the selected template and the material of the parts will also be different.

Hehe, you're asking so naïve. I don't think you're in this business, so why are you asking? The biggest difference between steel and iron is that steel is smelted on the basis of iron, and steel contains different chemical components such as manganese, molybdenum, chromium, silicon, vanadium, tungsten, etc., but the proportion of these elements is small (because it does not need more), and the main component is iron.

Iron, on the other hand, does not contain these elements.

It's definitely steel! SKD11 is equivalent to the domestically produced CR12MOV

This question is too tender. Hate iron does not make steel.

The commonly used die materials are generally CR12 and CR12MOV, CR12MO1V1 (code D2), which have good hardenability, hardening and wear resistance, and the heat treatment deformation is very small, which is a high wear-resistant micro-deformation die steel, and the bearing capacity is second only to high-speed steel. However, the carbide segregation is serious, and repeated upsetting (axial upsetting, radial pulling) reforging must be carried out to reduce the inhomogeneity of carbide and improve the use performance. 7crsimnmov:

Punching die inserts are used more, this is cheap, the heat treatment is simple, and the performance after heat treatment can generally meet the requirements. Some parts with small batches and low strength requirements are also available for T10.

The 45 is too brittle, and the mold is vulnerable when changing the mold or falling the hammer.

If you want to choose the appropriate die punch material, you need to according to:

1.The faster the punch speed, the better the punch material;

2.The thickness of the stamped material, the thicker the thickness of the stamped material, the better the punch material is required;

3.The hardness of the stamped material, the higher the hardness of the stamped material, the better the punch material is required;

4.The material to be stamped, the better the material to be stamped, such as copper, aluminum, galvanized sheet, stainless steel, tinplate, etc., the better the punch material is required;

This is not easy to say, it depends on the specific use, the use of each mold is not the same, the use of the punch material is naturally not the same, before our company is like this, there is no fixed punch material, resulting in a lot of waste of costs, and then after the Hengtongxing consultation, understand the specific use, selected the material, now it is much better, the production efficiency has improved a lot, if you are also very entangled, you can also go to consult

It can also tell you that there are the following common materials for punches: T8A, T10A, 9Mn2V, etc. for simple shape and small batch; CR12, ASP, SKD, tungsten steel, etc. are used for complex shapes and large batches. The specific type of use depends on the material to be processed.