3D laser cladding additive manufacturing process based on bearing bush alloy layer

Abstract

The invention relates to the technical field of laser cladding, in particular to a 3D laser cladding additive manufacturing process based on a bearing bush alloy layer. The process comprises the following steps: 1, adjusting 3D laser cladding parameters; 2, pretreating the cladding surface of a base material; 3, presetting a cladding material; 4, preheating; 5, carrying out laser cladding; 6, cutting the outer surface; 7, carrying out post-heat treatment; and 8, polishing the outer surface. According to the laser cladding additive manufacturing process for the bearing bush alloy layer, a traditional bearing bush alloy casting production process is replaced, laser cladding is directly adopted for the bearing bush alloy layer, and tin-based babbitt metal powder is cladded layer by layer to the designed thickness, so that the problems that the traditional bearing bush alloy casting process is complex in procedure, unstable in product quality, high in production cost, high in labor intensity, poor in working environment and the like are solved, and the beneficial effects of simplified procedure, good product quality, stable product quality, low production cost, high automation degree,environmental friendliness, sanitation and the like are achieved.

Description

technical field [0001] The invention relates to the technical field of laser cladding, in particular to a 3D laser cladding additive manufacturing process based on a bearing bush alloy layer. Background technique [0002] Laser cladding, also known as laser cladding or laser cladding, is a new surface modification technology. It adds cladding materials to the surface of the substrate and uses a high-energy-density laser beam to make it together with the thin layer on the surface of the substrate. The melting method forms a metallurgically bonded cladding layer on the surface of the base layer. Laser cladding refers to adding external materials to the molten pool formed after the substrate is irradiated by laser by means of synchronous or preset materials. And let the two co-solidify quickly to form a cladding layer. The characteristics of laser cladding: the cladding layer has low dilution but strong bonding force, and it is metallurgically combined with the substrate, which...

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Problems solved by technology

[0003] However, the traditional bearing alloy casting production process has many problems such as complex process, unstable product quality, high production cost, high labor intensity, poor working environment, etc., and the traditional process has many steps of manual operation, and the operator is at greater risk , and the bearing pad alloy of the casting production process, the casting layer is unevenly distributed, the waste of materials is large, the production cost is high, and the softness of the bearing pad alloy of the casting process is not guaranteed, which leads to the easy cracking of the bearing pad alloy

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