Testing device for oil pump of automobile
A test device and oil pump technology, which is applied in pump testing, mechanical equipment, machines/engines, etc., can solve the problems of low impact toughness and tensile strength, insufficient test performance, poor mechanical properties of power shafts, etc., and achieve mechanical properties Good, easy to test and observe, long service life effect
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Embodiment 1
[0058] According to the composition and mass percentage of the power shaft described in Table 1, Example 1, the raw materials were weighed, and the raw materials were crushed and refined into metal powders, and pre-annealed at 760°C under hydrogen or vacuum conditions. After blending, the Powders of small particles are made into large granules or granules.
[0059] The above-prepared large-grain or aggregate powder is rolled into a rod-shaped billet under a pressure of 450 MPa, and sintered at 980° C. for 3 hours to obtain a semi-finished rod.
[0060]Heat-treat the semi-finished rods prepared above, normalize at 980°C for 4 hours, take out the furnace and air-cool; quench at 830°C for 2 hours, oil-cool to room temperature; temper at 150°C for 3 hours, and air-cool to get the power shaft rod material.
[0061] Cutting, punching, welding, and shaping the above-prepared power shaft bar to obtain a finished power shaft.
Embodiment 2
[0063] According to the composition and mass percentage of the power shaft described in Table 1, Example 2, the raw materials were weighed, the raw materials were crushed and refined into metal powders, and pre-annealed at 750°C under hydrogen or vacuum conditions, and after blending, the Powders of small particles are made into large granules or granules.
[0064] The above-prepared large-grain or aggregate powder is rolled into a rod-shaped billet under a pressure of 350 MPa, and sintered at 920°C for 3 hours to obtain a semi-finished rod.
[0065] Heat-treat the semi-finished rods prepared above, normalize at 950°C for 4 hours, take out the furnace and air-cool; quench at 800°C for 2 hours, oil-cool to room temperature; temper at 140°C for 3 hours, and air-cool to obtain power shaft rods material.
[0066] Cutting, punching, welding, and shaping the above-prepared power shaft bar to obtain a finished power shaft.
Embodiment 3
[0068] According to the composition and mass percentage of the power shaft described in Table 1, Example 3, the raw materials were weighed, the raw materials were crushed and refined into metal powder, and pre-annealed at 780°C under hydrogen or vacuum conditions, and after blending, the Powders of small particles are made into large granules or granules.
[0069] The above-prepared large-grain or aggregate powder is rolled into a rod-shaped billet under a pressure of 550 MPa, and sintered at 1020° C. for 3 hours to obtain a semi-finished rod.
[0070] Heat treatment the semi-finished rods prepared above, normalize at 1020°C for 4 hours, take out the furnace and air cool; quench at 850°C for 2 hours, oil cool to room temperature; temper at 180°C for 3 hours, and air cool to get the power shaft material.
[0071] Cutting, punching, welding, and shaping the above-prepared power shaft bar to obtain a finished power shaft.
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