Low-temperature brazing method of cutter
A brazing and cutting tool technology, applied in the field of cutting tool processing, can solve problems such as fracture and easy occurrence of cracks, and achieve the effects of low melting temperature, improved production efficiency and obvious advantages.
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Embodiment 1
[0022] A method for welding steel parts and hard alloy cutters by low-temperature brazing, comprising the following steps:
[0023] S1. Pretreatment: sandblasting the cemented carbide blade, and then cleaning and degreasing the parent steel, cemented carbide blade and solder respectively;
[0024] S2. Welding copper: heat the brazing flux until it is boiled into a paste, then apply the brazing flux to the surface of the parent steel part, brazing material, copper sheet and hard alloy blade, and add the brazing material to the parent steel part and copper sheet Between them, a layer of copper with a thickness of 0.25mm is welded on the welding surface of the parent steel piece, and similarly, a layer of copper with a thickness of 0.25mm is also welded on the welding surface of the cemented carbide blade;
[0025] S3. After the welding is completed, immediately place the parent steel piece and the cemented carbide blade in a holding furnace at 280°C for 6 hours, then slowly cool...
Embodiment 2
[0031] A method for welding steel parts and hard alloy cutters by low-temperature brazing is characterized in that it comprises the following steps:
[0032] S1. Pretreatment: sandblasting the cemented carbide blade, and then cleaning and degreasing the parent steel, cemented carbide blade and solder respectively;
[0033] S2. Welding copper: heat the brazing flux until it is boiled into a paste, then apply the brazing flux to the surface of the parent steel part, brazing material, copper sheet and hard alloy blade, and add the brazing material to the parent steel part and copper sheet Between them, weld a layer of copper with a thickness of 0.4mm on the welding surface of the parent steel piece, and similarly, weld a layer of copper with a thickness of 0.35mm on the welding surface of the cemented carbide blade;
[0034] S3. After the welding is completed, immediately place the parent steel piece and the cemented carbide blade in a holding furnace at 290°C for 6.5 hours, then...
Embodiment 3
[0040] A method for welding steel parts and hard alloy cutters by low-temperature brazing is characterized in that it comprises the following steps:
[0041] S1. Pretreatment: sandblasting the cemented carbide blade, and then cleaning and degreasing the parent steel, cemented carbide blade and solder respectively;
[0042] S2. Welding copper: heat the brazing flux until it is boiled into a paste, then apply the brazing flux to the surface of the parent steel part, brazing material, copper sheet and hard alloy blade, and add the brazing material to the parent steel part and copper sheet Between them, a layer of copper with a thickness of 0.5mm is welded on the welding surface of the parent steel piece, and similarly, a layer of copper with a thickness of 0.5mm is also welded on the welding surface of the cemented carbide blade;
[0043] S3. After the welding is completed, immediately place the parent steel piece and the cemented carbide blade in a holding furnace at 300°C for 7...
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