Forging forming method of 1Cr13Mo type martensitic stainless steel ring piece
A martensitic stainless steel and ring technology, used in the manufacture of tools, forging/pressing/hammer devices, metal rolling, etc., can solve the problems of fast cooling speed, reduced production efficiency, narrow forging temperature range, etc., and achieve delayed cooling. The effect of speed, improving production efficiency and improving the quality of forgings
Pending Publication Date: 2022-04-12
GUIZHOU ANDA AVIATION FORGING
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Problems solved by technology
In the prior art, the forging of 1Cr13Mo stainless steel rings has the following problems: First, due to the narrow forging temperature range (usually the initial forging temperature is 1150 ° C, and the final forging temperature is 850 ° C), the temperature during the forging process is easy to drop to the final forging temperature. Below the forging temperature, resulting in the need for multiple reheating, resulting in increased energy consumption and greatly reduced production efficiency
The second is that during the forging process, the blanks of stainless steel rings need to be transferred between various forging equipment, such as from the press to the heating furnace, from the heating furnace to the ring rolling machine, etc. The blanks of the stainless steel rings are not in the transfer process. Insulation measures can easily lead to rapid cooling of the blank surface of stainless steel rings and surface cracks
The third is that the cooling of 1Cr13Mo stainless steel rings after forging is often air-cooled, and its cooling speed is fast, which is prone to delayed cracks (cracks that will only occur after a long period of time), which may cause serious damage to the subsequent operation of the equipment. Hidden dangers of quality accidents
Method used
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Experimental program
Comparison scheme
Effect test
specific Embodiment approach
[0010] The preparation method of the bulging mold for the special-shaped ring forging in the present invention requires equipment such as a forging heating furnace, a press, a ring rolling machine, a manipulator, and a cutting machine. Its specific implementation is as follows:
[0011] The steel ingot is sawed and cut into forging blanks; the heating furnace is used to heat the blank before upsetting; the forging manipulator is used to take the blank from the heating furnace and transfer it to the press, and the blank is rounded and upset by the press; upsetting After roughing, punch the hole with a punch on the press; use the forging manipulator to transfer the billet to the heating furnace, turn on the heating furnace, and heat the billet before ring rolling; use the forging manipulator to send the billet to the ring rolling machine, and start The ring rolling machine is used to form the billet ring; the forging manipulator is used to transfer the ring-rolled billet to the ...
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The invention discloses a forging forming method of a 1Cr13Mo type martensitic stainless steel ring piece, which is characterized by comprising the following steps of: firstly, blanking and heating a steel ingot; then rolling and upsetting are carried out; punching is conducted after upsetting; a forging manipulator is adopted to transfer the blank into a heating furnace for heating before ring rolling; and then the blank is sent to a ring rolling machine, and ring rolling forming is conducted on the blank. According to the method, the flame heating device is arranged at the front end of the forging manipulator, online heating and heat preservation of the blank of the stainless steel ring piece in the transferring process can be achieved, and therefore the blank of the stainless steel ring piece can be well controlled in the whole forging process, and the forging quality can be improved. The method is suitable for forging forming of the 1Cr13Mo type stainless steel ring piece.
Description
technical field [0001] The invention relates to a forging forming method, in particular to a forging forming method of a 1Cr13Mo type martensitic stainless steel ring. Background technique [0002] 1Cr13Mo stainless steel belongs to martensitic stainless steel, which has the characteristics of low plasticity, high deformation resistance, narrow forging temperature range, and poor thermal conductivity. Defects such as cracks appear during ring rolling. In the prior art, the forging of 1Cr13Mo stainless steel rings has the following problems: First, due to the narrow forging temperature range (usually the initial forging temperature is 1150 ° C, and the final forging temperature is 850 ° C), the temperature during the forging process is easy to drop to the final forging temperature. Below the forging temperature, it needs to be returned to the furnace for heating many times, resulting in increased energy consumption and a significant reduction in production efficiency. The s...
Claims
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IPC IPC(8): B21J5/00B21J5/08B21J1/06B21H1/06B21K27/00
Inventor 强超
Owner GUIZHOU ANDA AVIATION FORGING