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

A multi-component composite, cast iron product technology, applied in metal material coating process, coating, solid-state diffusion coating, etc. Oxygen multi-composite co-infiltration and other problems, to achieve the effect of easy control of thickness, simple structure and uniform coating

Pending Publication Date: 2020-07-17
眉山市三泰铁路车辆配件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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

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Embodiment 1

[0033] Such as Figure 1~4As shown, a gas nitrogen carbon oxygen QPQ multi-component compound co-infiltration furnace dedicated to cast iron products includes a drip irrigation assembly 1, a lifting assembly 2, a co-infiltration furnace 3 and an outer barrel 4; A heating chamber 5 matching the furnace 3, the co-infiltration furnace 3 is arranged in the heating chamber 5, the end of the drip irrigation assembly 1 is connected to the co-infiltration furnace 3, and the drip irrigation assembly 1 drips the medicament into the co-infiltration furnace 3 , so that the agent reacts with the surface of the workpiece to form a dense compound layer; the lifting assembly 2 is connected to the furnace cover 301 of the co-infiltration furnace 3, and the furnace cover 301 of the co-infiltration furnace 3 can be lifted or lowered smoothly and evenly through the lifting assembly 2 , so that the pressure in the co-infiltration furnace 3 is balanced and the pressure is stable. When operating the...

Embodiment 2

[0049] This embodiment provides a control method for the gas nitrogen carbon oxygen QPQ multi-element compound co-infiltration furnace 3 dedicated to cast iron products:

[0050] Step 1: Add nitrogen source A base liquid, nitrogen source B base liquid, carbon source, and oxygen source to each solvent barrel 101; turn on the first switch 106 of each solvent barrel 101, and transport each agent to its corresponding flow tube In 1021, precisely control the dose of input medicine;

[0051] Step 2, turn on the second switch 1024 according to the need, accurately deliver the required mixed reaction medicine to the mixing chamber 1059 through the scale on the flow tube 1021, turn on the agitator 1061, observe the reaction degree of the medicine after stirring in the transparent cover, Wait for the reaction to be completed; at this time, the furnace cover 301 is lifted by the jack 203, the workpiece is placed in advance, and the cover box furnace cover 301 is locked by the nut on the ...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/28
CPCC23C8/28
Inventor 顾海军
Owner 眉山市三泰铁路车辆配件有限公司
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