Aluminum Bronze Drip Boriding Process

Abstract

The invention discloses a drop-injection gas boronizing process for aluminum bronze, which comprises the following steps: 1) Boronizing preparation, putting boronizing agent and methanol into two containers respectively, when the temperature of the gas carburizing furnace rises to At 740-760°C, start dripping methanol and boronizing agent into the furnace, exhaust and increase the temperature in the furnace; 2) When the temperature in the furnace rises to 840-880°C, put the workpiece into the furnace and continue to increase the furnace temperature , while continuing to instill methanol and boronizing agent; 3) When the furnace temperature rises to 840-880°C again, start boronizing, keep the boronizing temperature for 3-8 hours, and continuously instill boronizing agent during this process to make the workpiece The surface layer forms the required boronizing layer. The invention has the advantages that the hardness, wear resistance and corrosion resistance of the workpiece are improved after boronizing, and the infiltration layer is controllable, the process is simple, the operation is convenient, the workpiece does not need to be cleaned after boronizing, the production efficiency is high, the labor intensity is low, and it is practical. Strong.

Description

technical field [0001] The invention relates to a chemical heat treatment process for copper alloys, in particular to a dripping gas boronizing process for aluminum bronze, which belongs to the technical field of metal materials. Background technique [0002] Aluminum bronze has excellent mechanical properties, corrosion resistance and wear resistance, and is an engineering structural material with superior comprehensive performance. Therefore, it occupies an important position in civil and military industries, and is widely used in machinery, aircraft and automobile manufacturing, shipbuilding and marine industries. , household appliances, metallurgy, mining, petrochemical industry, railway and locomotive engineering, and construction industry under high stress conditions. However, with the development of industry, higher requirements have been placed on the performance of aluminum bronze materials, such as higher wear resistance and high temperature oxidation resistance. ...

AI Technical Summary

Problems solved by technology

Although this boronizing method reduces the waste of infiltrating agent and shortens the heating time, it still has the defects of high labor intensity, poor working conditions, high cost of infiltrating agent, and difficulty in boronizing large-scale parts.

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