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Forging forming method of large piston rod forgings
The large piston rod forging is an important part of a certain type of ship with adjustable pitch propeller device, the material is 42CrMo steel, the middle is a large-flange, both ends are steps, the cross-sectional size changes are large. In the work by torsion, impact and other loads, high technical requirements. The manufacturing process of the piston rod is as follows: electric furnace smelting → vacuum refining → forging → heat treatment after forging → rough machining → ultrasonic testing (internal control) → quenching tempering → sampling and marking → testing → ultrasonic testing → * * * final processing → dimensional inspection → marking and delivery.
Gear precision forging: complete processing technology of gear precision forging
Gear precision forging is also a kind of precision forging, so compared with some ordinary gear forgings, the cost performance is higher, so we can only see the results of gear precision forging, but we can't see a production process. So now let's analyze the complete processing technology of gear precision forging.
How to determine the forging process plan and its importance
When forging and processing a forging, the first thing we need to do is to determine the forging process of the forging first, and know what process method to use to forge the forging in the next step. The forging process plays a very important role in the whole forging process, and it is also the premise to initially determine whether the forging can guarantee the quality. As long as the head is opened, the whole process can be better ensured, therefore, how important the scheme of the forging process is, let's first look at how the scheme of the forging process is determined.
Gear precision forging: complete processing technology of gear precision forging
Gear precision forging is also a kind of precision forging, so compared with some ordinary gear forgings, the cost performance is higher, so we can only see the results of gear precision forging, but we can't see a production process. So now let's analyze the complete processing technology of gear precision forging.
Different forging methods have different processes
Different forging methods have different processes, among which the process flow of hot die forging is long, and the general sequence is: forging blank blanking; Forging blank heating; Roll forging blank preparation; Die forging forming; Cutting edge; Punching; Correction; Intermediate inspection, inspection of the size and surface defects of forgings; Heat treatment of forgings for forging stress to improve metal cutting performance; Cleaning, mainly removing surface oxide scale; Correction; Inspection, general forgings to go through the appearance and hardness inspection, important forgings also through chemical composition analysis, mechanical properties, residual stress and other inspection and non-destructive testing.
Forging materials are mainly carbon and alloy steels of various compositions.
Forging materials are mainly carbon steel and alloy steel of various components, followed by aluminum, magnesium, copper, titanium and their alloys. The original state of the material is bar stock, ingot, metal powder and liquid metal. The ratio of the cross-sectional area of the metal before deformation to the cross-sectional area after deformation is called the forging ratio. The correct choice of forging ratio, reasonable heating temperature and holding time, reasonable initial forging temperature and final forging temperature, reasonable deformation and deformation speed have a great relationship to improve product quality and reduce costs.
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North Xili Industrial Zone, Dingxiang County, Xinzhou City, Shanxi Province
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