The steel for moulds should have high hardness

Update:25-03-2019
Summary:

Die steel is a steel used to make moulds such as cold d […]

Die steel is a steel used to make moulds such as cold die, hot forging die, and die-casting die. moulds are the main processing tools for manufacturing parts in industrial sectors such as machinery manufacturing, radio instruments, motors, and electrical appliances. The quality of the mould directly affects the quality of the pressure processing technology, the precision production and production cost of the product, and the quality and service life of the mould are mainly affected by the mould material and heat treatment, in addition to reasonable structural design and processing accuracy.

Die steel can be roughly divided into three types: cold-rolled die steel, hot-rolled die steel and plastic die steel for forging, stamping, cutting, die-casting and so on. Due to the different use of various moulds and complicated working conditions, the steel for moulds should have high hardness, strength, wear resistance, sufficient toughness, high hardenability and quenching according to the working conditions of the moulds they manufacture. Hard and other process performance. Due to the different uses and the complicated working conditions, the performance requirements for the steel for the mould are also different.

The cold rolling die includes a cold die, a drawing die, a drawing die, an impression die, a wire die, a rolling plate, a cold die, and a cold extrusion die. Cold working die steel shall have high hardness, strength, wear resistance, sufficient toughness, high hardenability, hardenability and other process properties according to the working conditions. The alloy tool steel used for this purpose is generally a high carbon alloy steel with a carbon mass fraction of 0.80% or more. Chromium is an important alloying element of such steel, and its mass fraction is usually not more than 5%.

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