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Anti-oxidation method for forging double-drive-axle triple gear

A triple gear, anti-oxidation technology, applied in the direction of wheels, metal processing equipment, transportation and packaging, etc., can solve problems such as gear pitting, and achieve the effect of preventing oxidation of forgings, easy implementation, and good anti-oxidation effect

Active Publication Date: 2014-01-08
兴城市粉末冶金有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The forging process of active cylindrical bevel gear products cannot effectively control the oxidation of the bevel tooth part, which will cause pitting corrosion of the gear during operation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The steps taken in order are as follows:

[0022] 1. Feeding;

[0023] 2. 1050-1150℃ intermediate frequency furnace heating;

[0024] 3. 250-350 ℃ mold preheating;

[0025] 4. Mold spraying lubricant;

[0026] 5. Load the material into the mold cavity of the billet and make the billet;

[0027] 6. Take the material to the pre-forging die cavity and forge;

[0028] 7. Take the material and lubricate the mold;

[0029] 8. Stacking at 500-650°C;

[0030] 9. Soak in water for 40-60s;

[0031] 10. 3mm cast steel shot blasting to remove scale;

[0032] 11. 800-850℃ intermediate frequency protective atmosphere heating;

[0033] 12. Load the material to the precision forging and shaping mold cavity and forge;

[0034] 13. Isothermal normalizing.

[0035] The method of the invention can prevent the occurrence of oxide scales on forgings during the triple gear forging process.

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PUM

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Abstract

The invention discloses an anti-oxidation method for forging a double-drive-axle triple gear. The anti-oxidation method comprises the steps of feeding, intermediate frequency furnace heating, die preheating, die lubricant spraying, blank making die cavity feeding, blank making and forming, pre-forging die cavity material taking, forging, material taking, die lubricating, stacking, water soaking, steel shot casting, shot blasting, descaling, intermediate frequency protecting gas heating, precision forging shaping die cavity feeding, and isothermal normalizing. The anti-oxidation method for forging the double-drive-axle triple gear can be used for preventing forging piece oxidation in the process of forging the triple gear. The anti-oxidation method for forging the double-drive-axle triple gear has the advantages of being reasonable in technology, convenient to achieve and good in anti-oxidation effect. The anti-oxidation method for forging the double-drive-axle triple gear is suitable for being used as a method for preventing oxidation of metal parts.

Description

technical field [0001] The invention proposes an anti-oxidation method for forging double drive axle triple gears for machining forged metal parts. technical background [0002] At present, the design structure of domestic heavy truck bridges adopts triple gear transmission in the middle bridge. Among them, the forging technology of active cylindrical bevel gear has a big gap compared with foreign products. On the one hand, the equipment used for forging products in China cannot guarantee the higher precision forming requirements of active cylindrical bevel gear. Therefore, the oxidation problem of the gear after forging is also relatively serious, and the subsequent processing will also increase a lot of costs, and even cause a large batch of defective products. The performance of the product is also reduced. The forging process of active cylindrical bevel gear products cannot effectively control the oxidation of the bevel tooth part, which will cause pitting corrosion w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21K1/30B21J5/00
Inventor 张贵宏高峰
Owner 兴城市粉末冶金有限公司
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