Preparation method of heat-treated 1500 MPa-grade wheel

A wheel and grade technology, applied in the field of preparation of 1500MPa grade heat-treated wheels, can solve problems such as weak resistance to deformation, and achieve the effects of increased load-bearing capacity, uniform vapor film, and consistent physical properties

Active Publication Date: 2019-02-19
LIAONING HENGYE HI TECH NEW MATERIAL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with ordinary wheels, lightweight wheels have thinner walls and relatively weaker deformation resistance

Method used

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  • Preparation method of heat-treated 1500 MPa-grade wheel
  • Preparation method of heat-treated 1500 MPa-grade wheel
  • Preparation method of heat-treated 1500 MPa-grade wheel

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Experimental program
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Embodiment Construction

[0032] A preparation method for a 1500MPa level heat-treated wheel, comprising the following steps:

[0033] Step 1) select steel, the chemical composition mass percentage of steel is: C 0.19, Si 0.74, Mn 1.36, P0.01, balance is Fe and unavoidable impurity; The tensile strength of described steel is 670MPa, yield The strength is 450MPa;

[0034] Step 2) as in Figure 1-4 As shown, the wheel spoke 3 with a qualified size is manufactured by using a conventional production process with steel, the thickness of the spoke sheet is 9 mm, and the thickness of the four air holes after processing is 5.5 mm, and the wheel rim 1 with a qualified size is manufactured with a conventional production process with steel. After the flash butt welding process, the weld seam is annealed, and the expansion amount of the expansion process is 25mm; the wheel spoke 3 and the wheel rim 1 are made of a qualified wheel by synthetic welding process, and the welding wire composition is: C 0.07, Mn 1.4, S...

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Abstract

The invention belongs to the field of mechanical manufacturing, and particularly relates to a preparation method of a heat-treated 1500 MPa-grade wheel. According to the technical scheme, the method comprises the following steps that (1) steel is selected and comprises, by mass, 0.15-0.20 of C, 0.7-1.17 of Si, 1.2-2.2 of Mn, less than 0.05 of P and the balance Fe and unavoidable impurities; (2) the selected steel is used for making wheel spokes and wheel rims through a conventional production process, and the wheel spokes and wheel rims are assembled into the wheel through a conventional production process; and (3) the wheel is heat-treated, specifically, the wheel is heated to 890-910 DEG C at first, heat preservation is conducted for 15-25 minutes, the wheel is discharged out of a furnace, cooled to 845-855 DEG C in air and subjected to water quenching, a full-size fitting fixture is used for fixation during quenching, the water temperature is 90-99 DEG C, then the wheel is heated to210=230 DEG C, and after heat preservation is conducted for 15-25 minutes, the wheel is air-cooled to the room temperature. The size of the wheel obtained through the method meets the standard requirements, and the physical properties are optimized.

Description

technical field [0001] The invention belongs to the field of mechanical manufacturing, and in particular relates to a method for preparing a 1500MPa heat-treated wheel. Background technique [0002] When making steel wheels, the conventional production processes of wheel spokes include: blanking, punching center holes and bolt holes, spinning air holes, expanding bolt holes, and turning; conventional production processes of wheel rims include: rolling, flash butt welding, Rolling, end cutting, compound rounding, flaring, rolling, expansion shaping, punching valve holes; wheel spokes and wheel rims are made into wheels through synthetic welding processes. [0003] At present, the high-strength materials used in the traditional manufacturing process of steel wheels generally use materials with a tensile strength of about 400 MPa, and the highest individual ones are only about 700 MPa. The main reasons are: first, the processing capacity of the equipment is insufficient, and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C21D9/34C21D1/607C21D1/18C21D9/50C21D1/26B23P15/00
CPCC21D1/18C21D1/26C21D1/607C21D9/34C21D9/50C22C38/002C22C38/02C22C38/04C22C38/06B23P15/00C21D2211/008C21D2211/001
Inventor 衣江华孙琪郭吉喆
Owner LIAONING HENGYE HI TECH NEW MATERIAL
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