Process for removing oxide skin on surface of forge piece

A technology of surface oxidation and scale, applied in the field of forging, can solve problems such as high cost, electrochemical corrosion of forgings, surface damage of forgings, etc., and achieve the effects of accelerating disintegration, ensuring disintegration and shedding, and accelerating removal of power.

Active Publication Date: 2022-02-15
济南乾瑞锻造股份有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the forging process of the forging, a large amount of oxide skin will be produced due to the overflow of impurities and oxidation. Most of the oxide skin will be removed from the surface of the forging during the forging process, but some oxide skin is still attached to the surface of the forging and has not been removed. The surface of the forging The scale will lead to electrochemical corrosion of forgings. Therefore, before the forgings are processed into gas parts, the residual scale on the surface needs to be cleaned. In the prior art, high-pressure water dephosphorization or pickling is generally used, but this The cost of the two methods is high, and it is easy to cause damage to the surface of the forging

Method used

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  • Process for removing oxide skin on surface of forge piece
  • Process for removing oxide skin on surface of forge piece
  • Process for removing oxide skin on surface of forge piece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A process for removing scale on the surface of a forging, comprising the following steps:

[0052] S1. First, knock the surface of the forging in a large range to break the scale and cracks, and then pretreat the forging to form a layer of magnetic powder in the scale;

[0053] see Figure 1-2 , the specific operation of preprocessing is:

[0054] S11, first drop the knocked forging into nano magnetic water;

[0055] S12, then constantly stir the nano-scale magnetic water, so that the magnetic powder sinking to the bottom diffuses in the water;

[0056] S13, standing still, so that the magnetic powder continuously sinks and deposits on the surface of the forging, and at the same time penetrates into the middle oxide scale along the cracks of the oxide scale;

[0057] S14. Please refer to image 3 , when the magnetic powder is deposited, an external magnetic field is applied under the forging to guide the movement of the magnetic powder and improve the uniformity of ...

Embodiment 2

[0064] see Figure 7 , the pretreatment to the forging in step S1 is:

[0065] A plurality of magnetizing balls 1 are evenly laid on the surface of the scale, and then the multiple magnetizing balls 1 are squeezed and rubbed, so that the inner magnetic oil and water overflow, and the magnetic powder is infiltrated into the oxide scale, and then a magnetic field is applied. Improve the uniformity of magnetic powder distribution and form a magnetic powder layer.

[0066] Before the magnetizing ball 1 is laid on the oxide skin, it is soaked in water to hydrolyze the water-soluble material in the liquid guide channel 8 to facilitate the overflow of magnetic oil and water.

[0067] see Figure 8 The magnetic ball 1 includes a magnetic storage end 71 and a gas storage end 72 wrapped around the lower end of the magnetic storage end 71. The magnetic oil storage end 71 is filled with magnetic oil and water, which is a mixture of light oil and nano-scale magnetic powder. The gas stora...

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PUM

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Abstract

The invention discloses a process for removing oxide skin on the surface of a forge piece, and belongs to the field of forging. The process for removing the oxide skin on the surface of the forge piece. According to the process, the forge piece with the oxide skin is pretreated, so that magnetic powder and liquid permeate into the gaps of the oxide skin, and then the liquid in the oxide skin is rapidly vaporized in a heating mode that the temperature rises suddenly; the oxide skin quickly expands in a short time, so that an intensive outward squeezing force is generated for the oxide skin. Compared with the prior art, the process remarkably accelerates the disintegration of the oxide skin, improves the maintenance skin removing efficiency, reduces the cost, and prevents the surface of the forge piece from being damaged easily. In addition, when the oxide skin is cut by a pneumatic ball cutter, an air column drives a traction rope to knock the oxide skin, and meanwhile, the magnetic powder layer and the traction rope attract each other, so that the magnetic powder generates outward thrust on the oxide skin from the inside, and the speed of separating the oxide skin from the forge piece is further increased.

Description

technical field [0001] The invention relates to the field of forging, in particular to a process for removing scale on the surface of forgings. Background technique [0002] Forging is a processing method that uses forging machinery to apply pressure to metal blanks to cause plastic deformation to obtain forgings with certain mechanical properties, certain shapes and sizes. It is one of the two major components of forging (forging and stamping). Forging can eliminate defects such as as-cast porosity produced in the metal smelting process and optimize the microstructure. At the same time, due to the preservation of complete metal flow lines, the mechanical properties of forgings are generally better than castings of the same material. For important parts with high loads and severe working conditions in related machinery, forgings are mostly used, except for plates, profiles or weldments that can be rolled with simpler shapes. [0003] During the forging process of the forgin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B08B5/02B08B3/10B08B13/00
CPCB08B5/02B08B3/102B08B13/00
Inventor 易伟
Owner 济南乾瑞锻造股份有限公司
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