Preparation method of high performance vibration damper piston body material
A piston body and shock absorber technology, which is applied in the field of preparation of high-performance shock absorber piston body materials, can solve the problems of short service life, insufficient strength and air tightness of shock absorber pistons, etc., and achieve low manufacturing cost and excellent durability. Wear performance and service life extension effect
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Embodiment 1
[0022] Fe-0.8%Cu-0.3%C-1%Y 2 o 3 Shock absorber piston body material:
[0023] (1) Add copper sulfate and yttrium sulfate to the hot-rolled steel plate sulfuric acid pickling waste according to the composition ratio to obtain copper and yttrium-containing ferrous sulfate pickling waste, concentrate the pickling waste and pass through the roasting furnace The nozzle is atomized and sprayed into tiny droplets, and roasted at a temperature of 900°C to generate sulfur dioxide gas and co-oxides of iron oxide, copper oxide, and yttrium oxide. The sulfur dioxide gas is recovered to make sulfuric acid for reuse;
[0024] (2) The co-oxide was reduced in a hydrogen atmosphere at 900 °C for 90 min to obtain nano-yttrium oxide dispersion-strengthened iron-copper alloy powder;
[0025] (3) Mix the dispersion-strengthened iron-copper alloy powder with graphene and an appropriate amount of zinc stearate evenly. The length of the graphene in the two-dimensional direction is 1 μm, and the th...
Embodiment 2
[0027] Fe-1.5%Cu-0.6%C-0.2%Y 2 o 3 Shock absorber piston body material:
[0028] (1) Add copper sulfate and yttrium sulfate to the waste sulfuric acid pickling liquid of iron-containing hot-rolled steel plate to obtain ferrous sulfate pickling waste liquid containing copper and yttrium. Concentrate the waste pickling liquid and spray it through the roasting furnace nozzle Spray into tiny droplets and roast at 600°C to generate sulfur dioxide gas and co-oxides of iron oxide, copper oxide, and yttrium oxide. The sulfur dioxide gas is recovered to make sulfuric acid for reuse;
[0029] (2) The co-oxide was reduced in a hydrogen atmosphere at 800 °C for 150 min to obtain nano-yttrium oxide dispersion-strengthened iron-copper alloy powder;
[0030] (3) Mix the dispersion-strengthened iron-copper alloy powder with graphene and an appropriate amount of zinc stearate evenly. The length of the graphene in the two-dimensional direction is 10 μm, and the thickness of the sheet is about...
Embodiment 3
[0032] Fe-1.2%Cu-0.4%C-0.5%Y 2 o 3 Shock absorber piston body material:
[0033] (1) Add copper sulfate and yttrium sulfate to the waste sulfuric acid pickling liquid of iron-containing hot-rolled steel plate to obtain ferrous sulfate pickling waste liquid containing copper and yttrium. Concentrate the waste pickling liquid and spray it through the roasting furnace nozzle Spray into tiny droplets and roast at 750°C to generate sulfur dioxide gas and co-oxides of iron oxide, copper oxide, and yttrium oxide. The sulfur dioxide gas is recovered to make sulfuric acid for reuse;
[0034] (2) The co-oxide was reduced in a hydrogen atmosphere at 850 °C for 120 min to obtain nano-yttrium oxide dispersion-strengthened iron-copper alloy powder;
[0035] (3) Mix the dispersion-strengthened iron-copper alloy powder with graphene and an appropriate amount of zinc stearate evenly. The length of the graphene in the two-dimensional direction is 6 μm, and the thickness of the sheet is about ...
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