Motor Information

The basis for the heat treatment process design of precision forgings is mainly the product part drawings and their technical requirements, the blank drawings and their technical requirements, technical standards related to process design, and the technology of heat treatment of precision forgings before and after the heat treatment of precision forgings. requirements, as well as the technical level of operators at the production site and the specific conditions of the equipment. Below, the specific contents and applications of these bases are described in detail.

1. Product parts drawings and their technical requirements

Product parts drawings should be valid versions approved according to prescribed procedures. Parts drawings should have clear technical requirements for hot spots:

1) Material grade (if necessary, corresponding material standards need to be provided).

2) Hardness value of precision forging parts after heat treatment (if necessary, other mechanical indicators of standard samples processed in the same furnace are proposed).

3) For parts heat-treated by chemical precision forgings, the drawings should indicate the heat-treated parts and dimensions of chemical precision forgings, the infiltration layer and its surface hardness, the structure of the infiltration layer and its related standards.

4) For parts that have special inspection requirements after heat treatment of precision forgings, their inspection categories and relevant standards should be indicated.

2. Parts blank drawings and their technical requirements

Part blank pattern is a casting, forging, weldment or semi-finished part pattern derived from the part pattern. During single-piece production, the rough pattern can generally be drawn with a red and blue pen on the part drawing; during mass production, the rough pattern should be drawn separately, and it must be countersigned and reviewed by the relevant process technical person in charge according to the prescribed procedures before it can be used for production. There should be clear technical requirements in the blank sample:

1) Material grade (if necessary, corresponding material standards need to be provided).

2) The hardness value of the blank and its detection location and detection method.

3) When necessary, the organizational status of the blank and the relevant standards implemented should be indicated.

3. Process technology standards

Process technical standards (including process design work quality standards) are an important basis for improving the quality of process design work and evaluating the level of process design. In recent years, process technology standards at different levels (national, industry, enterprise) have been continuously improved and improved, providing a more reliable basis for process design and greatly improving the process design level and design quality of various enterprises. Engineering and technical personnel engaged in Zhiyi design should conscientiously implement and implement process technology standards in specific work, and continuously improve the level of process technology standards, which is conducive to further improving product quality.

It is particularly pointed out that there are two situations in the so-called "enterprise standards": one is that the enterprise is temporarily unable to meet the requirements of industry standards and national standards due to some reasons, or the industry standards and national standards temporarily cannot cover the content of the enterprise's special products. At this time, the enterprise needs to formulate its own "corporate standards" that apply to the enterprise. The other is "enterprise internal control standards" formulated by companies in order to enhance market competitiveness and exceed industry standards in certain technical indicators.