Reform process of steel for cold heading machines and requirements for standard parts

forCold heading machineMany people may not know much about steel. The material modification process of steel for cold heading machines is an important part of the production process of cold heading machines, which directly affects the quality of cold heading machines and the normal production. Next, the cold heading machine manufacturer Jinnuo Machinery will take you to learn about the specific process of steel material modification process for cold heading machines.

The general process is heat treatment of material modification, the impact of material modification on product quality, the causes and control of bolt breaks, and the occurrence and control of product crack defects. There are many reasons for cracking of cold heading machines; some are due to poor material, some are due to incorrect processing methods, and some are due to excessive local deformation.

The cold heading machine is a standard fastener with heads with various structural shapes, so it has many strict requirements on the material.

First of all, in order to ensure good hardenability, fasteners with a diameter of more than 20 mm of standard parts must be made of steel specified for grade 10.9. Secondly, the carbon content processed by standard parts is lower than the minimum manganese content of low-carbon alloy steel.

And when processing standard parts, a horizontal line mark should be added under the performance grade code. The materials used for processing standard parts should have good hardenability to ensure that the core of the fastener cross-section is obtained after quenching and before tempering.