A base separation mechanism
A technology of separating mechanism and connecting mechanism, applied in vehicle seats, child seats, special positions of vehicles, etc., can solve the problems of general strength, hardness, short service life of connecting rod, single connecting rod material, etc., and achieve comprehensive mechanical The effect of good performance, extended service life and simple processing technology
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Embodiment 1
[0036] Pretreatment of raw materials: Preheat the raw materials used in the connecting rod according to Table 1 to 300°C and keep them warm for later use; wherein the raw materials are ferromanganese alloys with a manganese content of 20%-30%, and a vanadium content of 15%-18% ferrosilicon alloy with titanium content of 18%-20% and ferrosilicon alloy with silicon content of 60%-70%.
[0037] Forming: Put the above preheated raw materials into the medium frequency induction furnace, melt them at 1700°C to obtain molten steel, and then pour them at 1590°C to obtain connecting rod blanks; the pouring and mechanical processing adopt the existing pouring process and machining process.
[0038] Quenching and tempering heat treatment: first heat the connecting rod blank to 840°C, then cool it to 580°C with 60°C cooling water, then cool it to room temperature in 50°C quenching oil, and finally temper it at 600°C, keep it warm Air cooling after 3h to obtain the final product of the co...
Embodiment 2
[0040] Pretreatment of raw materials: preheat the raw materials used in the connecting rod according to Table 1 and Example 2 to 320°C, and keep them warm for later use; wherein the raw materials are ferromanganese alloys with a manganese content of 20%-30%, and a vanadium content of 15%-18% ferrosilicon alloy with titanium content of 18%-20% and ferrosilicon alloy with silicon content of 60%-70%.
[0041] Forming: Put the above preheated raw materials into the medium frequency induction furnace, melt them at 1720°C to obtain molten steel, and then pour them at 1600°C to obtain the connecting rod blank; the pouring and mechanical processing adopt the existing pouring process and machining process.
[0042] Quenching and tempering heat treatment: first heat the connecting rod blank to 850°C, then cool it to 590°C with 70°C cooling water, then cool it to room temperature in quenching oil at 60°C, and finally temper it at 600°C, keep it warm Air cooling after 3h to obtain the fi...
Embodiment 3
[0044] Pretreatment of raw materials: Preheat the raw materials used in the connecting rod according to Table 1 to 330°C in Example 3, and keep them warm for later use; wherein the raw materials are ferromanganese alloys with a manganese content of 20%-30%, and a vanadium content of 15%-18% ferrosilicon alloy with titanium content of 18%-20% and ferrosilicon alloy with silicon content of 60%-70%.
[0045] Forming: put the above preheated raw materials into the medium frequency induction furnace, melt them at 1730°C to obtain molten steel, and then pour them at 1600°C to obtain connecting rod blanks; the pouring and mechanical processing adopt the existing pouring process and machining process.
[0046] Quenching and tempering heat treatment: first heat the connecting rod blank to 860°C, then cool it to 600°C with 80°C cooling water, then cool it to room temperature in 70°C quenching oil, and finally temper it at 620°C, keep it warm Air cooling after 4h to obtain the final pro...
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