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Brazing filler metal-carried hard alloy block and preparation method thereof

A technology of cemented carbide block and brazing material, which is applied in metal processing equipment, welding media, manufacturing tools, etc., can solve the problems of insufficient brazing material, excessive brazing material, waste, etc., and achieve improved seam filling and high assembly accuracy , the effect of quantitative and precise addition

Inactive Publication Date: 2016-11-16
ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This requires high assembly accuracy, otherwise insufficient brazing material will cause defects; too much brazing material will cause waste and require subsequent processing

Method used

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  • Brazing filler metal-carried hard alloy block and preparation method thereof

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Effect test

preparation example Construction

[0015] The preparation method of the cemented carbide ingot with brazing filler metal of the present invention is:

[0016] The brazing alloy is prepared into a coiled wire shape required for thermal spraying through smelting, extrusion, drawing and other processes; No oil, no impurities, no oxidation; then, the coil-shaped brazing alloy is sprayed on the to-be-welded surface of the cemented carbide block by thermal spraying equipment to form a brazing alloy layer 2 with a certain thickness. The cemented carbide block is directly assembled with the base body during welding.

Embodiment 1

[0019] The cemented carbide block is selected from YG6, the size is 20mm×20mm×10mm; the brazing alloy is BCu58ZnMn, the thickness is 0.2mm and the wire is 2.0mm in diameter; the base material is Q235 steel, the size is 20mm×20mm×20mm; Use YJ2; the brazing method is induction brazing. The first method is to spray the BCu58ZnMn wire with a diameter of 2.0mm to the surface to be welded of the cemented carbide block by thermal spraying equipment, the coating thickness is 0.2mm, and then assemble the cemented carbide block with Q235, using a high-frequency induction welding machine Welding, the flux is continuously added during the welding process until the brazing joint is formed; the second method is to cut the BCu58ZnMn strip with a thickness of 0.2mm into sheets with a size of 20mm × 20mm × 0.2mm, and the cemented carbide block, The brazing material sheet and the base body are assembled, and the same brazing process is used for brazing to form a brazing joint. The shear streng...

Embodiment 2

[0021] The cemented carbide block is selected from YG6, the size is 20mm×20mm×10mm; the brazing alloy is BAg40CuZnCd, the thickness is 0.3mm and the wire is 2.0mm in diameter; the base material is Q235 steel, the size is 20mm×20mm×20mm; the flux Use FB102; the brazing method is induction brazing. The first method is to spray the BAg40CuZnCd wire with a diameter of 2.0mm to the surface to be welded of the cemented carbide block by thermal spraying equipment, the coating thickness is 0.3mm, and then assemble the cemented carbide block with Q235, using a high-frequency induction welding machine Welding, the flux is continuously added during the welding process until the brazing joint is formed; the second method is to cut the BAg40CuZnCd strip with a thickness of 0.2mm into sheets with a size of 20mm × 20mm × 0.2mm, and the cemented carbide block, The brazing material sheet and the base body are assembled, and the same brazing process is used for brazing to form a brazing joint. ...

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Abstract

The invention discloses a brazing filler metal-carried hard alloy block. The brazing filler metal-carried hard alloy block has a double-layer structure; and a brazing filler metal alloy layer is compounded on the lower surface of the hard alloy block. The thickness of the brazing filler metal alloy layer can be adjusted within 0.01-20 mm according to the size of a brazing filler metal filling gap. The brazing filler metal alloy layer is one of pure copper, copper base, silver base, manganese base, palladium base and titanium base brazing filler metal. During preparing, the brazing filler metal alloy is prepared as a coiled wire for future use by smelting, extruding and drawing procedures; the oil removal and the sand blasting are performed for the surface of the hard alloy block to guarantee no oil, no impurity and no oxidation on the surface to be welded; and then, the coiled wire-shaped brazing filler metal alloy is sprayed on the surface to the welded of the hard alloy block by thermal spraying equipment to form the brazing filler metal alloy layer with a certain thickness. The brazing filler metal-carried hard alloy block has the advantages of high assembly precision and convenience; as the thickness of the brazing filler metal layer compounded on the hard alloy block is controllable, the quantitative and precise adding of brazing filler metal is realized; and the hard alloy and the brazing filler metal interface form metallurgic bonding, so that the gap filling performance of the brazing filler metal to the hard alloy in the brazing process is improved.

Description

technical field [0001] The invention relates to the field of welding, in particular to a cemented carbide block with brazing filler metal, and also to a preparation method of the cemented carbide block. Background technique [0002] Cemented carbide has high hardness, good wear resistance and thermal hardness, and is widely used in metal cutting tools, mining, coal mining picks, mining rock drilling, oil drilling, geological exploration tools, deep drawing, extrusion, Stamping dies, construction drilling tools, woodworking tools, rolls, roll rings, measuring tools, spraying, brazing and spray welding of friction surfaces of various wear-resistant mechanical parts. [0003] Due to the high price of cemented carbide and its poor plasticity and impact toughness, most of the application forms of cemented carbide are to use small pieces of cemented carbide as inserts, which are attached to the work of manufacturing parts of high-strength steel such as structural steel and tool st...

Claims

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Application Information

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IPC IPC(8): B23K35/40B23K1/00B23K1/19B23K1/20
CPCB23K1/00B23K1/19B23K1/20B23K35/40
Inventor 龙伟民钟素娟董博文马佳于新泉潘建军于奇董显王洋程战
Owner ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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