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A kind of brazing auxiliary agent for tungsten steel plane welding and its welding method

A technology of plane welding and welding method, which is applied in the direction of welding equipment, welding medium, welding/cutting medium/material, etc., which can solve the problems of poor weldability and easy seam retention of tungsten carbide, so as to improve welding efficiency and desoldering Less, avoid the effect of oxidation

Active Publication Date: 2020-05-08
湖北亚科微钻有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problem that the existing tungsten carbide has poor weldability and two waste tungsten carbide base materials are easy to leave seams when welding

Method used

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  • A kind of brazing auxiliary agent for tungsten steel plane welding and its welding method
  • A kind of brazing auxiliary agent for tungsten steel plane welding and its welding method
  • A kind of brazing auxiliary agent for tungsten steel plane welding and its welding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This embodiment provides a kind of brazing flux for tungsten steel plane welding, including the following components by weight: KF: 48 parts, B 2 O 3 : 20 parts, CoCl 2 : 10 parts, complex fluoroborate: 8 parts, complex borate: 10 parts, surfactant: 6 parts, water: 63 parts. Among them, the compound fluoroborate is a mixture of potassium fluoroborate and ammonium fluoroborate in a mass ratio of 2:1, the compound borate is a mixture of sodium borate and potassium borate in a mass ratio of 1:1, and the surfactant is perfluoroalkane base quaternary ammonium salt. Put the above-mentioned components into a crucible according to the proportion and mix them evenly, boil them at a temperature of 150-180°C for 20 minutes, remove the moisture, and form a paste.

[0028] The brazing additive prepared in this example is evenly mixed, without delamination and no inclusions visible to the naked eye, and the brazing additive has good spreadability on the solid silver solder sheet. ...

Embodiment 2

[0037] This embodiment provides a kind of brazing flux for tungsten steel plane welding, including the following components by weight: KF: 45 parts, B 2 o 3 : 15 parts, CoCl 2 : 12 parts, complex fluoroborate: 10 parts, complex borate: 12 parts, surfactant: 9 parts, water: 52 parts. Among them, the compound fluoroborate is a mixture of potassium fluoroborate and ammonium fluoroborate in a mass ratio of 3:1, the compound borate is a mixture of sodium borate and potassium borate in a mass ratio of 1:1, and the surfactant is perfluoroalkane base amine. Put the above-mentioned components into a crucible according to the proportion and mix them evenly, boil them at a temperature of 150-180°C for 15 minutes, remove the moisture, and form a paste.

[0038] The brazing additive prepared in this example is evenly mixed, without delamination and no inclusions visible to the naked eye, and the brazing additive has good spreadability on the solid silver solder sheet.

[0039] The meth...

Embodiment 3

[0041] This embodiment provides a kind of brazing flux for tungsten steel plane welding, including the following components by weight: KF: 50 parts, B 2 o 3 : 23 parts, CoCl 2 : 12 parts, complex fluoroborate: 8 parts, complex borate: 7 parts, surfactant: 4 parts, water: 68 parts. Among them, the compound fluoroborate is a mixture of potassium fluoroborate and ammonium fluoroborate in a mass ratio of 2:1, the compound borate is a mixture of sodium borate and potassium borate in a mass ratio of 1:1, and the surfactant is perfluoroalkane base amine. Put the above components into a crucible according to the proportion and mix them evenly, boil them at a temperature of 150-180°C for 23 minutes, remove the moisture, and form a paste.

[0042] The brazing additive prepared in this example is evenly mixed, without delamination and no inclusions visible to the naked eye, and the brazing additive has good spreadability on the solid silver solder sheet.

[0043] The method for weldi...

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Abstract

The invention provides a brazing auxiliary agent for tungsten steel plane welding. The brazing auxiliary agent comprises the following components in parts by mass: 45-50 parts of KF, 15-23 parts of B2O3, 10-12 parts of CoCl2, 8-10 parts of compound fluoborate, 7-12 parts of compound borate, 4-9 parts of a surfactant and 52-68 parts of water. The brazing auxiliary agent can prevent a tungsten steelrod from being oxidized in a welding process effectively, and meanwhile, an instantaneous catalytically molten solid silver soldering lug and the tungsten steel rod are welded under a special temperature condition, so that no weld joints are left, and the strength and physical properties of the welding points are consistent to those of the whole tungsten steel rod.

Description

technical field [0001] The invention belongs to the technical field of welding materials, and in particular relates to a brazing auxiliary used for plane welding of tungsten steel and a welding method thereof. Background technique [0002] The micro-drills and milling cutters used in the production of PCB (integrated circuit) boards all need to be imported, and the price is expensive. The price of an imported tungsten carbide rod rises from 1.8 yuan to 3.3 yuan, and it is still rising, while the price of finished products is declining. The milling cutters and drills used by the manufacturers cannot be recycled and directly used, and they need to be re-melted and refined. If you continue to use the traditional production process, the profit margin will become smaller and smaller. In order to make full use of resources, reduce product costs, improve economic benefits, and build a conservation-oriented society, in recent years, some units in the market have used recycled drill...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/363B23K1/002
Inventor 黎国甫郑四来
Owner 湖北亚科微钻有限公司
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