Production method for transmission shaft
A production method and transmission shaft technology, applied in the field of vehicle accessories, can solve problems affecting product quality, low yield, loose material structure and crystal density, etc.
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Embodiment 1
[0021] A production method of transmission parts, it comprises the following steps:
[0022] 1) Using high-pressure nitrogen atomization to obtain stainless steel powder for molding, cold isostatic pressing under a pressure of 7.5kPa for 1h;
[0023] 2) The cold isostatic compact is hot-extruded at a temperature of 1220°C;
[0024] 3) The blank formed in step 2) is flattened on the instrument lathe and the outer circle of the car is made into a blank that meets the step 5) press mold;
[0025] 4) Heat the billet in step 3) to 860°C in an intermediate frequency induction furnace for 8 hours, then cool it to 820°C, keep it for 8 hours, and then cool it to below 200°C, then take it out of the furnace and air cool;
[0026] 5) cold-extruding the large-diameter end of the billet after step 4) on a press;
[0027] 6) Drill the center hole of the roughened billet on the instrument lathe, and after the center hole is expanded, chamfer the center hole and end face angle of the large ...
Embodiment 2
[0034] A production method of transmission parts, it comprises the following steps:
[0035] 1) The stainless steel powder obtained by high-pressure nitrogen atomization method is molded, and isostatically pressed under a pressure of 5.3kPa for 3 hours;
[0036] 2) The cold isostatic compact is hot-extruded at a temperature of 1315°C;
[0037] 3) The blank formed in step 2) is flattened on the instrument lathe and the outer circle of the car is made into a blank that meets the step 5) press mold;
[0038] 4) Heat the billet in step 3) to 840°C in an intermediate frequency induction furnace for 8 hours, then cool the furnace to 800°C, keep it for 8 hours, and then cool it to below 200°C, then take it out of the furnace and cool it in air;
[0039] 5) cold-extruding the large-diameter end of the billet after step 4) on a press;
[0040] 6) Drill the center hole of the roughened billet on the instrument lathe, and after the center hole is expanded, chamfer the center hole and e...
Embodiment 3
[0047] A production method of transmission parts, it comprises the following steps:
[0048] 1) The stainless steel powder obtained by high-pressure nitrogen atomization method is molded, and isostatically pressed under a pressure of 6.4kPa for 2 hours;
[0049] 2) The cold isostatic compact is hot-extruded at a temperature of 1257°C;
[0050] 3) The blank formed in step 2) is flattened on the instrument lathe and the outer circle of the car is made into a blank that meets the step 5) press mold;
[0051] 4) Heat the billet in step 3) to 860°C in an intermediate frequency induction furnace for 8 hours, then cool the furnace to 800°C, keep it for 8 hours, and then cool it to below 200°C, then take it out of the furnace and air cool;
[0052] 5) cold-extruding the large-diameter end of the billet after step 4) on a press;
[0053] 6) Drill the center hole of the roughened billet on the instrument lathe, and after the center hole is expanded, chamfer the center hole and end fac...
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