Welding die for welding powder

Abstract

The invention provides a welding die for welding powder. The welding die comprises a die body and a die cover, the die cover detachably covers the die body, the die body is internally provided with a reaction cavity and a welding cavity, the reaction cavity is located above the welding cavity, the bottom of the reaction cavity is communicated with the welding cavity through a drainage trough, and the bottom face of the reaction cavity is provided with a metal spacer for preventing the welding powder in the reaction cavity from falling into the welding cavity before welding. The welding die is characterized in that the inner wall of the reaction cavity is provided with an annular step-level trough capable of retaining welding slag obtained after a reaction in the reaction cavity on the inner wall of the reaction cavity, and the diameter of the annular step-level trough is sequentially increased from bottom to top. The reaction cavity is composed of an upper reaction cavity body and a lower reaction cavity body, the top of the lower reaction cavity body is communicated with the upper reaction cavity body, the bottom of the lower reaction cavity body is communicated with the drainage trough, the annular step-level trough is located on the inner wall of the upper reaction cavity body, and the metal spacer is placed at the communicating position of the upper reaction cavity body and the lower reaction cavity body. The welding die has the advantages that the welding slag can be effectively prevented from entering a welding piece along with the molten welding powder, and welding quality is good.

Description

technical field [0001] The invention relates to the technical field of mold making, in particular to a welding mold for welding powder. Background technique [0002] An existing patent No. CN201310073329.6, a Chinese invention patent titled "Welding Mold", discloses a welding mold, including a mold body and a mold cover. The mold is provided with a reaction cavity, a drainage groove, and a welding cavity. The bottom surface of the reaction chamber at the top of the drainage tank is provided with a metal spacer that prevents the metal powder in the reaction chamber from falling into the welding chamber before the reaction and has a melting point lower than that of metal copper. The top surface of the mold body is provided with a fire bar The insertion slot is characterized in that: the bottom surface of the mold cover is provided with a ventilation cavity, and the ventilation cavity communicates with the cavity of the upper part of the mold cover that can place the adsorbent ...

AI Technical Summary

Problems solved by technology

However, the residue in the welding powder may enter the weldment with the molten welding powder, affecting the quality of the weldment, and the reaction chamber of the device is easily damaged after repeated welding, and the service life is short, so the structure of the device needs further improvement

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