Automobile steering-gear cylinder barrel
A machine cylinder and automobile technology, which is applied in the field of automobile steering machines, can solve the problems of complex processing of steering machine cylinders, insufficient strength and service life, etc., and achieve simple manufacturing processes and improved strength of steel-bonded hard alloys , cost reduction effect
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Embodiment 1
[0024] A cylinder tube for an automobile steering gear, which is prepared by mixing steel-bonded cemented carbide raw material powder, pressing and sintering, heating forging, annealing, machining, quenching, tempering, and nitriding:
[0025] The steel-bonded cemented carbide raw material powder includes a hard phase and a steel-based binder, and is characterized in that its composition is: the hard phase (weight) consists of 10 parts of alumina, 5 parts of molybdenum carbide, 2 parts of aluminum nitride, and hexaboron. 2 parts of calcium and 8 parts of Co; steel-based binder (weight) consists of C0.1%, Co4%, Ni1%, Ga0.8%, Ce0.5%, Zn0.1%, Si0.07%, La0 .04%, Cd0.02%, the balance is Fe composition; the weight ratio of hard phase and steel-based binder is 1.7,
[0026] In the powder mixing process: weigh alumina, molybdenum carbide, aluminum nitride, calcium hexaboride, and Co powder according to the above ratio, and perform ball milling and alloying according to the ball-to-battery ...
Embodiment 2
[0034] A cylinder tube for an automobile steering gear, which is prepared by mixing steel-bonded cemented carbide raw material powder, pressing and sintering, heating forging, annealing, machining, quenching, tempering, and nitriding:
[0035] The steel-bonded cemented carbide raw material powder includes a hard phase and a steel-based binder, and is characterized in that its composition is as follows: the hard phase (weight) consists of 15 parts of alumina, 10 parts of molybdenum carbide, 2 parts of aluminum nitride, and hexaboron 2 parts of calcium, 8 parts of Co; steel-based binder (weight) consists of C0.2%, Co5%, Ni2%, Ga0.9%, Ce0.6%, Zn0.2%, Si0.08%, La0 .05%, Cd0.03%, the balance is Fe composition; the weight ratio of hard phase and steel-based binder is 1.7,
[0036] In the powder mixing process: weigh alumina, molybdenum carbide, aluminum nitride, calcium hexaboride, and Co powder according to the above ratio, and perform ball milling and alloying according to the ball-to-...
Embodiment 3
[0044] A cylinder tube for an automobile steering gear, which is prepared by mixing steel-bonded cemented carbide raw material powder, pressing and sintering, heating forging, annealing, machining, quenching, tempering, and nitriding:
[0045] The steel-bonded cemented carbide raw material powder includes a hard phase and a steel-based binder, and is characterized in that its composition is: the hard phase (weight) consists of 13 parts of alumina, 7 parts of molybdenum carbide, 2 parts of aluminum nitride, and hexaboron 2 parts of calcium and 8 parts of Co; steel base binder (weight) consists of C0.15%, Co4.5%, Ni1.5%, Ga0.85%, Ce0.55%, Zn0.15%, Si0. 075%, La0.045%, Cd0.025%, the balance is composed of Fe; the weight ratio of hard phase and steel-based binder is 1.7,
[0046] In the powder mixing process: weigh alumina, molybdenum carbide, aluminum nitride, calcium hexaboride, and Co powder according to the above ratio, and perform ball milling and alloying according to the ball-to...
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