Heat treatment production line device of piston rod

Abstract

The invention relates to a heat treatment production line device of a piston rod. The device comprises a working platform, wherein an ultrasonic cleaning device, a preheating furnace, a nitriding furnace, an oxidating furnace, a cooling device, a soaking device and a drying furnace are arranged on the working platform in turn; the preheating furnace, the drying furnace, each furnace of the nitriding furnace and the nitriding furnace contains a furnace body and a furnace pipe arranged in the furnace body; and a waste gas collection device is arranged on the inner wall of the furnace body and above the furnace pipe. In the heat treatment production line device of the invention, the waste gas collection device is used to collect and treat the waste gas generated in the processes of preheating, nitriding, oxidating and drying, and the whole process can not release waste gas and cause pollution. The device of the invention is also provided with a temperature detection control system which can detect the temperature variation of the heater and the furnace pipe instantly in the heat treatment process, and adjust and control the temperature instantly to increase the treatment effect of the piston rod in the processes of preheating, nitriding, oxidating and drying.

Description

Technical field [0001] The invention relates to a metal surface heat treatment equipment, in particular to a piston rod surface heat treatment equipment used for gas rods of automobiles and the like. Background technique [0002] Existing automobile piston rod surface treatment mostly adopts electroplating equipment electroplating, spraying equipment spraying, and heat treatment equipment for heat treatment. Electroplating mostly uses electroplating equipment to polish the surface of the piston rod, electroplating chromium, copper, zinc, tin, cadmium, Titanium and other metals have been gradually abandoned due to serious pollution caused by electroplating. When spraying equipment is used for spraying, the main problem is the highly dispersed paint mist and volatilized solvents, which pollute the environment and are not good for human health. Waste paint causes economic losses, and because of frequent reciprocating movement of the piston rod, if the spray coating is not tightly co...

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Problems solved by technology

[0002] The surface treatment of existing automobile piston rods mostly adopts electroplating equipment electroplating, spraying equipment spraying, and heat treatment equipment for heat treatment. Titanium and other metals have been gradually abandoned due to the serious pollution of the electroplating method. When spraying equipment is used for spraying, the main problems are highly dispersed paint mist and volatilized solvents, which pollute the environment and are not conducive to human health. Waste of paint, causing economic losses, and because of the frequent reciprocating movement of the piston rod, if the spray coating is not tightly combined with the piston rod body, it is easy to cause problems such as falling off

Therefore people are devoted to piston rod surface heat treatment now, but in the process of carrying out surface heat treatment, usually adopt heat treatment equipment such as nitriding furnace, oxidation furnace to carry out nitriding, oxidation etc. treatment, because the structure of existing nitriding furnace, oxidation furnace It is relatively simple, there is no real-time detection system in the heat treatment process, and the corresponding production status cannot be detected in real time, and the heat treatment process can be controlled accordingly, resulting in the surface of the piston rod after nitriding and oxidation is not smooth, and problems such as micropores will occur; nitrogen The waste gas produced in the process of chemicalization and oxidation is directly discharged out of the nitriding furnace and oxidation furnace without collection and treatment, and there is a phenomenon of air leakage from time to time, which not only pollutes the environment, but also easily causes harm to the health of the staff.

In addition, due to the backward technology of nitriding furnaces and oxidation furnaces, the surface of the nitriding and oxidizing piston rods will be corroded and yellow spots will appear after a period of use, which will shorten the service life of the piston rods, fail the quality inspection, and reduce the rate of defective products. high

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