How much do you know about the characteristics of Zhangqiu forging?
Chapter forging features a large range of weight, it ranges from a few grams to several hundred tons, higher quality than castings, better mechanical properties than castings, and can withstand large impact forces and other heavy loads. Therefore, it can be used for some important and stressed parts.
For high-carbide steels, chapter forgings are of better quality than rolled steels. For example, high-speed steel, a rolled material, can only be used after forging to meet the requirements. In particular, HSS milling cutters must be modified. The lightest. In the premise of ensuring the design strength, Zhangqiu forgings are lighter than castings, reducing the weight of the machine itself, which is important for vehicles, aircraft, delivery vehicles and cosmic aerospace equipment. Save raw materials. Precision forgings not only save more raw materials, but also save more machining hours. High productivity. Due to the flexibility of free forging, some repair shops widely use forging methods to produce a variety of accessories.
Zhangqiu forging defect analysis, was oxidized metal billet heating and oxidizing gas reaction in the furnace to generate oxidation phenomenon called oxidation. The generation of oxide will not only cause the metal to burn, but also reduce the surface quality and dimensional accuracy of the forgings. When the oxide is pressed into the forging depth exceeds the machining allowance, the forging will be scrapped.
Decarburisation, the surface of the metal billet carbon in the heating process and oxygen and other media reaction, resulting in the reduction of the surface carbon elements of the phenomenon known as decarburisation. Decarburisation will reduce the hardness and wear resistance of the surface layer. If the thickness of the decarburized layer is less than the processing margin, it will not cause harm to the forgings; otherwise, it will affect the quality of the forgings in Zhangqiu. Rapid heating, protective coating on the surface of the billet, heating in a neutral or reducing medium can slow decarburisation.
Overheating, due to the heating temperature is too high or in the high temperature holding time is too long and lead to metal billet grain coarse phenomenon is called overheating. Overheating will reduce the plasticity of the billet and the mechanical properties of the Zhangqiu forgings. Therefore, the heating temperature should be strictly controlled and the holding time at high temperature stage should be shortened as much as possible to prevent overheating.
Overburning, when the metal billet heating temperature exceeds the initial forging temperature too much, causing the grain boundary oxidation melting, known as overburning. After overburning, the strength of the material is seriously reduced and the plasticity is very poor. Once forged, it breaks into scrap and cannot be saved. Therefore, it is important to strictly enforce the correct operating specifications.
Cracking. When heating large Zhangqiu forgings, if the charging temperature is too high or the heating speed is too fast, it will make the temperature difference between the forging core and the surface layer too large, resulting in excessive internal stress, thus producing cracks. Therefore, when heating large forgings, generally should take anti-heat measures to prevent the charging temperature is too high, heating speed is too fast.
The main body axis standing in the die chamber forming, horizontal direction of two-dimensional size similar to the chapter forgings. This type of forgings die forging usually uses upsetting work steps. Subdivided into groups according to the differences in forming difficulty. Forgings formed in an upsetting and slightly pressed-in manner, e.g. gears with little change in height between hub and rim. Forgings formed by extrusion with slight upsetting and a combination of extrusion, press-in and upsetting, e.g. universal joint forks, cross shafts, etc. Forgings formed by compound extrusion, such as hub axles, etc.
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