Babbitt metal casting solvent, preparation method and Babbitt metal casting method

Abstract

The invention discloses a Babbitt metal casting solvent, a preparation method and a Babbitt metal casting method. The Babbitt metal casting solvent comprises the following components: zinc chloride, stannous chloride dihydrate, copric chloride dihydrate, technical hydrochloric acid and water. The preparation method of the solvent comprises the following steps: calculating the working volume of a solvent pot; calculating the needed amount of each component; adding the components according to the above order; stirring and blending; heating to 200-250 DEG C, wherein the heating time is determined according to the thickness of a cast bearing concave tile, and heating is performed for 1-2 minutes for every millimeter in thickness; arranging a water dropper on the solvent pot to uniformly adding water into the solvent. A Babbitt metal casting process comprises: alkali cleaning of a bearing bush, acid washing of the bearing bush, solvent dip-coating of the bearing bush, installation of a pouring mold, melting and pouring of Babbitt metal, and cooling. The Babbitt metal casting solvent has the remarkable characteristics of simple process, saving in time and materials, low cost and good bonding quality.

Description

technical field [0001] The invention relates to a babbitt alloy casting flux, a preparation method and a babbitt alloy casting method, which belong to the technical field of metal material heat treatment technology. Background technique [0002] When repairing mining, building materials and ship machinery, it is found that a lot of Babbitt alloys are consumed in mechanical friction parts, such as ball mills, internal combustion engines, steam engines, etc., which require casting new Babbitt alloys. As we all know, in the tradition of Babbitt alloys In the pouring process, there is a tinning process, which consumes a lot of expensive tin. Before tinning, it needs to be preheated. At the same time, the purpose of tinning is to avoid oxidation on the surface of the workpiece, but since Babbitt alloy casting is exposed to the atmosphere, during the period from the completion of tinning to the start of pouring Babbitt alloy, the molten tin is easy to mix with the air. Oxygen act...

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Problems solved by technology

[0002] When repairing mining, building materials and ship machinery, it is found that a lot of Babbitt alloys are consumed in mechanical friction parts, such as ball mills, internal combustion engines, steam engines, etc., which require casting new Babbitt alloys. As we all know, in the tradition of Babbitt alloys In the pouring process, there is a tinning process, which consumes a lot of expensive tin. Before tinning, it needs to be preheated. At the same time, the purpose of tinning is to avoid oxidation on the surface of the workpiece, but since Babbitt alloy casting is exposed to the atmosphere, during the period from the completion of tinning to the start of pouring Babbitt alloy, the molten tin is easy to mix with the air. Oxygen acts to produce oxidants, which oxidize the surface of the workpiece, thereby reducing the bonding quality of the Babbitt alloy and the bearing bush

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