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A preparation method of laser cladding strengthened splitter cone

A technology of laser cladding and shunt cone, applied in the direction of coating, metal material coating process, etc., can solve the problems of reducing the production efficiency and reliability of wheel hub casting, low cost performance, corrosion and wear, etc., to achieve ideal corrosion resistance, reduce enterprise cost, the effect of prolonging the service life

Inactive Publication Date: 2016-01-06
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual use, it is found that although the life of the diverter cone has been improved after the improvement, the cost is high and the cost performance is low. Moreover, in the environment of high-temperature molten aluminum, severe corrosion and wear are common, and failure occurs when the life is far below the design life. Increased productivity and reliability in wheel casting

Method used

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  • A preparation method of laser cladding strengthened splitter cone
  • A preparation method of laser cladding strengthened splitter cone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, the 35CrMo bar is processed according to the drawing of the splitter cone, and the part 3 that is not in contact with the aluminum liquid is not treated, and the part 1 that is in contact with the aluminum liquid is reduced by 0.5mm according to the size, and the processing is continued. Black the part contacting the aluminum liquid, and dry; adopt the mechanical mixing method to put the cermet alloy powder prepared in proportion into a three-dimensional powder mixer and fully mix it for 2 hours. The chemical composition mass percentage of the cermet alloy powder is: C0.35 %, Al0.62%, Si0.7%, Cr25%, Co55%, Yb2.1%, W4.3%, the balance is Fe; the splitter cone is fixed on the high-power semiconductor laser processing machine tool, driven by the chuck The splitter cone rotates, and the powder is fed to the blackened part of the splitter cone by pneumatic power. The thickness of the powder layer is 1.2mm; the high-energy beam output by the high-pow...

Embodiment 2

[0024] Process the 42CrMo bar according to the drawing of the splitter cone, do not perform any treatment on the part that does not contact the aluminum liquid, reduce the part that contacts the aluminum liquid by 0.5mm according to the size, and continue processing. After the processing is completed, use ink to blacken the contact with the aluminum liquid Partially, and dry; use the mechanical mixing method to put the cermet alloy powder prepared in proportion into a three-dimensional powder mixer and mix it fully for 2 hours. The chemical composition mass percentage of the cermet alloy powder is: C0.25%, Al0.72 %, Si0.7%, Cr29%, Co59%, Yb2.2%, W4.3%, and the balance is Fe; the splitter cone is fixed on the high-power semiconductor laser processing machine tool, and the splitter cone is driven to rotate by the chuck. Gravity feeds the powder to the blackened part of the splitter cone, the thickness of the powder layer is 1.2mm; the high-energy beam output by the high-power sem...

Embodiment 3

[0026] Process the 35CrMoSi bar according to the drawing of the splitter cone, do not perform any treatment on the part that does not contact the aluminum liquid, reduce the part that contacts the aluminum liquid by 0.5mm according to the size, and continue processing. After the processing is completed, use ink to blacken the contact with the aluminum liquid Partially, and dry; use the mechanical mixing method to put the cermet alloy powder prepared in proportion into a three-dimensional powder mixer and mix it fully for 2 hours. The chemical composition mass percentage of the cermet alloy powder is: C0.25%, Al1.2 %, Si0.8%, Cr28%, Co56%, Yb2.3%, W4.6%, and the balance is Fe; the splitter cone is fixed on the high-power semiconductor laser processing machine tool, and the splitter cone is driven to rotate by the chuck. Pneumatically feed the powder to the blackened part of the splitter cone, the thickness of the powder layer is 1.2mm; use the high-energy beam output by the high...

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Abstract

The invention relates to a preparation method of a laser-cladding reinforced shunt taper, which mainly comprises the steps that after a common medium-low carbon alloy structural steel bar is machined according to a shunt taper drawing, a part contacted with molten aluminum is reduced by 0.5mm according to the size, and then continuously machined; metal ceramic alloy powder is prepared, wherein the metal ceramic alloy powder comprises the following chemical components by mass percent: 0.1-0.35% of C, 0.6-1.2% of Al, 0.7-0.9% of Si, 25-29% of Cr, 55-62% of Co, 2.1-2.8% of Yb, 4.3-4.9% of W, and the balance of Fe; the power is conveyed on the shunt taper by adopting a pneumatic or gravitational mode; high-energy light beams of a high-power semiconductor laser device are used for scanning, so that the alloy powder conveyed in place and metal on the surface of a substrate of the shunt taper have a quick metallurgical reaction; stress relief annealing is conducted on the laser-cladding shunt taper for 2-4h at 300-500 DEG C; slow furnace cooling is conducted; and finish machining of an alloy reinforcing layer is accomplished by a numerical control machine tool. The method is simple in preparation technology and pollution-free, and the prepared reinforced shunt taper is long in service life and low in cost.

Description

technical field [0001] The invention relates to the mechanical processing of aluminum hub moulds, in particular to a method for preparing a splitter cone. Background technique [0002] In the casting process of aluminum alloy wheels, the service life of H13 mold steel splitter cones is generally about 2,500 pieces, and needs to be replaced in about 10 days of production. During production, the life of splitter cones has a great impact on production efficiency. Moreover, due to the high price of H13 steel, frequent replacement in actual use increases the cost of the enterprise. Finding a splitter cone with long life, good performance, and low price and its preparation method, and a strengthened splitter cone that improves the whole casting process and the quality of the wheel hub will greatly improve the production efficiency of aluminum alloy wheel hub enterprises, reduce enterprise costs, and save precious metals. [0003] In recent years, in order to improve the service ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10C22C19/07B22D17/22B23P15/00
Inventor 付宇明霍立军陈德胜郑丽娟
Owner YANSHAN UNIV
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