Cast iron product special-use gas nitrogen carbon oxygen QPQ (Quench-Polish-Quench) multicomponent composite co-infiltrating furnace

Abstract

The invention discloses a cast iron product special-use gas nitrogen carbon oxygen QPQ multicomponent composite co-infiltrating furnace. The cast iron product special-use gas nitrogen carbon oxygen QPQ multicomponent composite co-infiltrating furnace comprises a drop irrigation component, a lifting component, a co-infiltrating furnace body and a furnace outer barrel, wherein the center of the furnace outer barrel is arranged to a heating cavity matched with the co-infiltrating furnace body, the co-infiltrating furnace body is arranged inside the heating cavity, the arranged end portion of thedrop irrigation component is connected with the co-infiltrating furnace body, the lifting component is connected with a furnace cover of the co-infiltrating furnace body, the drop irrigation componentcomprises solvent barrels, fluid flowmeters, a first supporting rack, a second supporting rack and a multiple-head-needle type dripper, the solvent barrels are arranged on the first supporting rack and communicate with the fluid flowmeters through pipelines, the fluid flowmeters are arranged on the second supporting rack, solution outlet positions of the solvent barrels are provided with first switches, and the outlet positions of the fluid flowmeters are provided with second switches. According to the cast iron product special-use gas nitrogen carbon oxygen QPQ multicomponent composite co-infiltrating furnace, when the co-infiltrating furnace body is operated by the cast iron product special-use gas nitrogen carbon oxygen QPQ multicomponent composite co-infiltrating furnace, the cast iron product special-use gas nitrogen carbon oxygen QPQ multicomponent composite co-infiltrating furnace is more accurate and is safer and more efficient, the process requirements are guaranteed, and thetime is also saved.

Description

technical field [0001] The invention relates to the technical field of workpiece surface treatment and processing, in particular to a gas nitrogen, carbon and oxygen QPQ multi-element compound co-infiltration furnace dedicated to cast iron products. Background technique [0002] The essence of QPQ (Quench-Polish-Quench, quenching-polishing-quenching) technology is low-temperature salt-bath nitriding + salt-bath oxidation or low-temperature salt-bath nitrocarburizing + salt-bath oxidation, which is a surface modification technology for metal parts , has the advantages of high corrosion resistance, high wear resistance and micro deformation. The surface of the workpiece treated by QPQ technology is Fe3O4 oxide film, and its corrosion resistance is much higher than the level of surface protection technologies such as chromium plating and nickel plating. Medium carbon steel can replace stainless steel in many fields after QPQ treatment. At the same time, the QPQ process can rep...

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Problems solved by technology

[0004] The purpose of the present invention is to: aim at the above problems, provide a gas nitrogen carbon oxygen QPQ multi-component compound co-infiltration furnace dedicated to cast iron products, which solves the difficulty in realizing the nitrogen-carbon-oxygen multi-component co-infiltration in the prior art, which cannot ensure uniform coating and the thickness of the coating. The thickness cannot be controlled and controlled, and most of the lock and pressure holding methods of the switch furnace are manually operated, so it is difficult to grasp the balance and pressure balance of the furnace cover

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