Environment-friendly multi-alloy carbonitriding agent and multi-alloy diffusion corrosion-resistant layer production process

Abstract

The invention belongs to the technical field of metal corrosion-resistant treatment, and specifically discloses an environment-friendly multi-alloy carbonitriding agent and a multi-alloy diffusion corrosion-resistant layer production process. The environment-friendly multi-alloy carbonitriding agent comprises an infiltrating agent, a filling agent and an activating agent, wherein the infiltratingagent is prepared from zinc-containing multi-alloy metal powder; the filling agent is made of metal; and the filling agent is granular or flaky. The metal filling agent is high in wear resistance andmore in heat accumulation, and can be used repeatedly for preventing dust pollution. The activating agent is prepared from ammonium chloride or urea. The multi-alloy diffusion corrosion-resistant layer production process adopts the environment-friendly multi-alloy carbonitriding agent, and specifically comprises workpiece classification, carbonization oil removal, shot blasting rust removal and zinc impregnation to obtain a workpiece of which the surface layer is a multi-alloy carbonitriding agent diffusion corrosion-resistant layer, so that the salt spray corrosion resistance performance andduration of a zinc diffusion layer are improved and prolonged, and the corrosion resistance of the workpiece is enhanced.

Description

technical field [0001] The invention belongs to the technical field of metal anticorrosion treatment, and specifically discloses an environment-friendly multi-element alloy co-penetration agent and a production process of a multi-element alloy diffusion anti-corrosion layer. Background technique [0002] Corrosion, as one of the forms of material failure, has brought huge losses to the national economy and consumed precious resources and energy. The research on metal anti-corrosion has important economic significance. The existing anti-corrosion measures mainly include electro-galvanizing and cold-galvanizing. , Anti-corrosion paint or anti-corrosion paint, powder coating, dacromet coating, nitriding, hot-dip galvanizing, thermomechanical galvanizing (ie powder galvanizing). [0003] As we all know, zinc is used as an anti-corrosion material for steel, mainly because it is cheap, has good corrosion resistance, low melting point, and is easy to coat. It adopts powder galvaniz...

AI Technical Summary

Problems solved by technology

[0004] In the current alloy co-infiltration process, co-infiltration agents generally include infiltration agents, fillers and activators. Most of the infiltration agent formulations are metal powders, such as: zinc powder, aluminum powder, nickel powder, rare earth elements, and fillers are also called anti-adhesion Agent or charge, generally non-metallic ceramic refractory materials, such as: floating beads, quartz sand, pickling sand, aluminum oxide powder, corundum, river sand, etc.; when the filler in the existing formula is too fine, the fluidity is poor , leading to uneven seepage layer, after several times of use, it will gradually become very fine powder, which will be pasted on the surface of the infiltrated part or in the thread of the fastener. When the dust pollution is large, the fine powder carried by the infiltrated parts pollutes the environment of the workshop, and the water source is polluted during the washing process. Moreover, a large amount of solid waste powder will be generated due to the waste furnace material, which contains metal powder, metal oxide and The finer refractory powder is difficult to handle and becomes a new source of solid waste pollution. The activator is also called a penetration aid or an accelerated diffusion agent. Ammonium chloride, ammonium sulfate and other ammonium salts are commonly used