The function of the welding material for the cutter blade is to firmly weld the blade to the handle

Date:2020-05-25 Views:88

  The blade of shearing machine has become an indispensable part of people's life. Cutter blades are related to people's quality of life and promote finance. So, what is the blade of the shearing machine?

  The function of solder is to weld the blade firmly to the handle. Specifically, the solder is heated to a molten state, at which time the surface of the metal and the metal to be welded are continuously penetrated into the metal molecules, the iron is dissolved in the liquid copper in the solder, and the copper diffuses to the iron along the iron boundary. Inside, this causes the solder to penetrate into the metal to be welded. The deeper the penetration, the better the welding quality and the higher the bond strength. If the solder melts and cannot be wetted by the solder, spots will appear on the solder surface and good solder joints will not be obtained. Therefore, it is necessary to select appropriate solder, put forward some requirements for solder, and keep the surface of welding metal flat. And clean.

   Solder requirements:

  (1)The melting point of the solder should not be too high, lower than the melting point of the handle of 40-600c, otherwise it is easy to melt the bar and cause the blade to break. However, it should not be too low. If it is too low, it will affect the welding strength, and the cutting head will be heated and peeled off during the cutting process.

  (2)The solder shall have good fluidity and wettability to ensure high strength V, T joints.

  (3)The solder should have enough toughness, and the weld can bear intermittent cutting force and impact load。

  (4)The weld formed by solder has plasticity, and part of the welding stress can be eliminated through the plastic deformation of the weld during the welding process, so as to reduce the generation of cracks.。

  (5)Solder should not contain elements that are easily swallowed. Otherwise, the components will evaporate when heated at high temperature, which will affect the welding strength and the health of operators

  (6)Low solder cost。

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