A processing and forming process of super long non-penetrating special-shaped shaft
A technology for processing and forming special-shaped shafts, which is applied in the field of processing and forming processes for ultra-long non-penetrating special-shaped shafts, can solve the problems of shortened service life and easy generation of micro-cracks, etc., to improve quality and strength, reduce the generation of micro-cracks, reduce The effect of the grinding process
Active Publication Date: 2022-03-18
JIANGSU HAIYU MACHINERY
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Problems solved by technology
[0003] Cold extrusion molding is generally used when processing special-shaped non-penetrating shafts. The general process includes blanking, annealing, turning blanks, shot blasting phosphorus saponification, cold extrusion molding, etc., but in this process, the forgings are being processed. During the extrusion process, when the extruded inner wall is deformed under a large impact force, microcracks are easily generated on the deformed surface. The existence of microcracks will affect the overall strength and quality of the formed special-shaped non-penetrating shaft, making it actual shortened service life
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Embodiment 1
[0047] see Figure 1-2 , a processing and forming process of a super-long non-penetrating special-shaped shaft, comprising the following steps:
[0048] S1. Cutting according to the required non-penetrating special-shaped shaft size to obtain rough forgings;
[0049] S2, annealing the forging rough material;
[0050] S3. Turning the annealed forging rough material into a billet, and performing shot blasting phosphorus saponification after the billet to obtain the shaft blank;
[0051] S4. Control the temperature of the synchronous degraining punch to 40-50°C, and fill inert gas into the synchronous degraining punch while extruding;
[0052] S5. Cold extrusion molding treatment, the shaft blank is extruded multiple times through a synchronous de-graining punch filled with high temperature and filled with inert gas until it is formed, and a non-penetrating special-shaped shaft is obtained.
[0053] The hardness of the forging after annealing treatment is HB180-260, and the gr...
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Abstract
The invention discloses a processing and forming process of a super-long non-penetrating special-shaped shaft, belonging to the technical field of non-penetrating shaft processing. The die angle can effectively reduce the generation of micro-cracks in the process of cold extrusion, and effectively improve the quality and strength of the non-penetrating special-shaped shaft. The inert gas will squeeze the instantaneous repair fluid, so that the deformation of the dynamic repair layer is in contact with the non-penetrating special-shaped shaft, so that the instantaneous repairing fluid is evenly coated on the inner wall of the shaft, and the inner wall of the extruded non-penetrating special-shaped shaft is repaired for micro-cracks, and After the repair, the instantaneous repair fluid coated on the inner wall of the non-penetrating special-shaped shaft can be quickly shaped in time, thereby effectively improving the smoothness and repairing quality of the inner wall of the non-penetrating special-shaped shaft, thereby reducing the later grinding process of the inner wall and improving the overall work. efficiency.
Description
technical field [0001] The invention relates to the technical field of non-penetrating shaft processing, and more specifically, relates to a processing and forming process for super-long non-penetrating special-shaped shafts. Background technique [0002] Cold extrusion is a processing method in which the metal blank is placed in the cold extrusion die cavity, and at room temperature, the punch fixed on the press is applied to the blank to cause plastic deformation of the metal blank to produce parts. my country has been able to cold-extrude metals such as lead, tin, aluminum, copper, zinc and their alloys, low-carbon steel, medium-carbon steel, tool steel, low-alloy steel, and stainless steel, and even to bearing steel, high-carbon high-aluminum alloys, etc. Tool steel, high-speed steel, etc. can also be cold-extruded with a certain amount of deformation. In terms of extrusion equipment, my country already has the ability to design and manufacture extrusion presses of vario...
Claims
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IPC IPC(8): B23P6/04B23P15/14
CPCB23P6/04B23P15/14
Inventor 顾成义庄栋栋沈华宾顾海娟谢鹏谢国兵
Owner JIANGSU HAIYU MACHINERY