Zhangqiu forging heat treatment process program
The content of Zhangqiu Forging Forging Factory's process standard includes technical requirements, tooling equipment, testing instruments and methods, etc. The basis for formulation is based on referring to domestic and foreign advanced standards and combining specific conditions. According to the advanced equipment standards at home and abroad, combined with the actual equipment conditions, formulate equipment technical standards; according to the advanced testing level and instrument standards at home and abroad, combined with the company's sample situation, formulate reasonable testing standards.
The heat treatment of Zhangqiu forgings should give priority to the published national standards. When formulating company standards, the standard level should be slightly higher than the production level, so as to promote the improvement of the overall technical level and management level. The formulated corporate standards should be reported to the standards management department for record to ensure the effectiveness of the standards.
The Zhangqiu forging process specification is also called the operation specification. It is not compiled based on one forging, but on the same part, which is the refinement of the process. The principle of heat treatment process is introduced. There is no uniform format for its preparation, it is based on the following points.
Scientific and reasonable: write according to process type or product type, such as annealing process code, quenching process code, etc. The operating points that cannot be specified in the process regulations, such as the key points of furnace loading, the effective area of the furnace, deoxidation, and vacuum furnace degassing, are stipulated. Common heat treatment sections are described.
Compiled according to equipment performance. This paper introduces the heat treatment process specification theoretically, and expounds the arrangement relationship between each heat treatment process, so as to browse the entire process implementation process.
Inspection before heat treatment of forgings
Pre-heat treatment inspection of forgings in Zhangqiu is a pre-inspection process for finished products after the forging forming process is completed according to the surface quality, shape size and technical conditions of forgings, forging drawings and process cards. Shellfish physical examination should pay attention to the following aspects. The appearance of forgings should be free of cracks, rust spots, scales and bruises that affect the quality of heat treatment.
The schematic diagram of forgings should indicate the main dimensions, special shape parts, large cross-section parts, shape and position of holes. The size and accuracy of heat-treated parts should indicate machining allowance, surface roughness, dimensional accuracy, position accuracy and shape accuracy. According to the 10%-20% of the heat treatment batch number of the forgings, the underpressure is spot-checked. When the spot-checked batch of forgings meets the requirements of the drawings, the inspection process can be entered. Forgings inspected before quenching should be stored separately.
Before quenching Zhangqiu forgings, check the finished material rack, put 1-2 pieces of forgings (fragmented waste cannot be sampled), and mark the word "sampling" on the material to show the difference. After the inspection, the "finished product quantity", "repairable scrap quantity", "scrapped quantity" and "defect code" should be accurately filled in the attached card, and signed by the inspector.
Below 700~800°C, the thermal conductivity of stainless steel is relatively small, so the heating time required for stainless steel forging is longer. When ferritic stainless steel is heated to high temperature, the grain growth tends to be serious, resulting in greater brittleness. The oxidation and decarburization of martensitic stainless steel are particularly serious at high temperature, and they are required to shorten the heating time as much as possible at high temperature. For precision forgings or important forgings with small allowances, the surface of the billet should be coated with a layer of glass lubricant before heating, and then heated.
Related news
Precautions for Forging Process
Forging process is to cut the material into the required size, heating, forging, heat treatment, cleaning and testing. In small-scale forging, all these operations are carried out by a number of forg
Ring forgings and the common distinction between what a large flange
A forging is an article in which a metal is applied with pressure to shape the desired shape or a suitable compressive force by plastic deformation. This force is typically achieved by using a hammer
Forging plant which pay attention to the process
I do not know the word to hear the process when we think more of what? I think a lot of people on the pursuit of most of the works reflected in the above works of art. In fact, not only works of art o
Mobile QR code
Telephone：008618678305028
Telephone：008613256765417
Telephone：008613969014252
Telephone：008613864073799
E-mail：zqjsduanzao@163.com
Add.: Sangyuan Village Industrial Park, Xianggongzhuang Town, Zhangqiu, Jinan City, Shandong Province
Copyright © 2022Zhangqiu Jingshan Sangyuan Forging Co., Ltd. SEO