Manufacturing method for toughening magnesium alloy reduction jar with laser

A manufacturing method and reduction tank technology, applied in metal material coating process, coating, etc., can solve problems such as failure to see, laser cladding process parameters cannot be adapted, etc., to achieve improved characteristics, compact structure, and increased service life Effect

Active Publication Date: 2014-12-31
上海大陆天瑞激光表面工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Although the above-mentioned technical solutions given by the prior art can use the laser cladding process to toughen some equipment components, for other specific equipment components, such as specific components such as magnesium reduction tanks, the existing laser cladding process parameters have been significantly can't adapt
[0013] According to the applicant's search and verification: the use of laser cladding technology to toughen the magnesium alloy reduction tank has no precedent in China, and no relevant reports have been seen abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1 Laser cladding Fe-based alloy toughened magnesium alloy reduction tank in Hebei ** Factory

[0030] The base material of the magnesium alloy reduction tank is ZG40Cr28Ni16

[0031] The chemical composition of the cladding material is calculated by mass percentage as:

[0032] Cr: 14%, Ni: 14%, W: 1.5%, Mo: 1.5%, and the balance is Fe;

[0033] The process steps are as follows:

[0034] (1) The part of the reduction tank that needs to be laser clad, that is, the part near the cooling end, is machined, and the thickness of the machine is 5mm.

[0035] (2) Conduct surface flaw detection on the laser cladding area, including coloring flaw detection, X-ray flaw detection, ultrasonic flaw detection, fluorescent flaw detection and other non-destructive flaw detection, and cracks, pores and other defects are not allowed;

[0036] (3) Laser cladding, cross-flow CO is used in the laser cladding process 2 Laser, cladding process parameters are: power: 3000W, spot dia...

Embodiment 2

[0039] Example 2 Laser cladding Fe-based alloy toughened magnesium alloy reduction tank for a factory in Liaoning

[0040] The base material of the magnesium alloy reduction tank is ZG40Cr28Ni16

[0041] The chemical composition of the cladding material is calculated by mass percentage as:

[0042] Cr: 15%, Ni: 13%, W: 1%, Mo: 2%, and the balance is Fe;

[0043] The process steps are as follows:

[0044] (1) The part of the reduction tank that needs to be laser clad, that is, the part near the cooling end, is machined, and the thickness of the machine is 6mm.

[0045] (2) Conduct surface flaw detection on the laser cladding area, including coloring flaw detection, X-ray flaw detection, ultrasonic flaw detection, fluorescent flaw detection and other non-destructive flaw detection, and cracks, pores and other defects are not allowed;

[0046] (3) Laser cladding, cross-flow CO is used in the laser cladding process 2 Laser, cladding process parameters are: power: 4000W, spot d...

Embodiment 3

[0049] Example 3 Laser cladding Fe-based alloy toughened magnesium alloy reduction tank for a factory in Shanxi

[0050] The base material of the magnesium alloy reduction tank is ZG40Cr28Ni16

[0051] The chemical composition of the cladding material is calculated by mass percentage as:

[0052] Cr: 16%, Ni: 12%, W: 2%, Mo: 1%, and the balance is Fe;

[0053] The process steps are as follows:

[0054] (1) The part of the reduction tank that needs to be laser clad, that is, the part near the cooling end, is machined, and the thickness of the machine is 7mm.

[0055] (2) Conduct surface flaw detection on the laser cladding area, including coloring flaw detection, X-ray flaw detection, ultrasonic flaw detection, fluorescent flaw detection and other non-destructive flaw detection, and cracks, pores and other defects are not allowed;

[0056] (3) Laser cladding, cross-flow CO is used in the laser cladding process 2 Laser, cladding process parameters are: power: 5000W, spot diame...

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PUM

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Abstract

The invention relates to a manufacturing method for toughening a magnesium alloy reduction jar with laser. The method is characterized in that the method comprises the following operations: 1, machining a reduction jar part for laser cladding, that is, a part close to a cooling end, wherein the machining thickness is 5-6mm; 2, carrying out surface flaw detection on the laser cladding zone; 3, carrying out laser cladding, wherein a transverse flow CO2 laser is adopted, and a melting pool is protected by an inert gas in the laser cladding process; 4, carrying out polishing processing on the cladding layer surface to restore to the original size; and 5, carrying out lossless flaw detection. According to the invention, the brand new toughening method is provided for the magnesium alloy reduction jar, so the sigma harmful phase in the material surface is eliminated; the service life of the reduction jar is improved two times; and after the laser cladding, a base material is combined with the cladding layer in a metallurgy manner, and the combination strength is high, so the generation of a shedding phenomenon is avoided.

Description

technical field [0001] The invention relates to a method for manufacturing a toughened magnesium alloy reduction tank, in particular to a method for manufacturing a toughened magnesium alloy reduction tank by adopting laser cladding technology. Background technique [0002] The smelting process of magnesium alloy is to grind calcined dolomite and ferrosilicon into fine powder, mix them in a certain proportion and press them into balls, put them into a reduction tank made of heat-resistant alloy, and heat them at a high temperature of 1150-1200°C and 10- Reduction under the pressure of 20Pa produces magnesium vapor, which becomes crystalline magnesium after condensation, and then melts to make magnesium ingots. The reduction tank is the most important equipment unit in the magnesium smelting process. It consists of three parts: a hemispherical head, a straight tank body and a cooling water jacket. The size of the reduction tank: outer diameter Φ330mm-370mm, wall thickness 33m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10
Inventor 陈江李佳赵爽
Owner 上海大陆天瑞激光表面工程有限公司
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