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Special nylon worm gear for electric power steering (EPS) of automobile and preparation method thereof

An electric power steering, nylon technology, applied in the field of polymer nylon materials, can solve the problems of poor wear resistance, easy corrosion, high noise, etc., to achieve the effect of protecting the abrasive parts, ensuring the rotational strength and low noise

Inactive Publication Date: 2016-04-13
宿迁中盛尼龙有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The EPS worm gears in the prior art are mostly made of tin bronze, phosphor bronze, copper alloy and other materials, and are formed by mechanical processing of rods. The cost is relatively high, the noise is relatively large, the wear resistance is not good, it is easy to be corroded, and the service life is relatively short. , requires cumbersome maintenance such as post-maintenance and refueling

Method used

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  • Special nylon worm gear for electric power steering (EPS) of automobile and preparation method thereof
  • Special nylon worm gear for electric power steering (EPS) of automobile and preparation method thereof
  • Special nylon worm gear for electric power steering (EPS) of automobile and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 As shown, first, the inner iron core of the worm gear is cleaned and descaled with an ultrasonic cleaner, and then soaked in 35% methane coupling agent KH550 for 8 minutes. Put the soaked iron core and the mold together into a drying oven for preheating, the preheating temperature is 160°C, the iron core preheating time is 4 hours, and the worm wheel mold preheating time is 2 hours. The nylon raw material is melted, and the melting temperature must not exceed 140°C. Select 99.22% of nylon raw material, 0.2% of catalyst, 0.28% of chemical aid, 0.025% of nylon oil, 0.25% of modifier, and 0.025% of toner. In the storage tank, stir evenly. Connect the vacuum device and carry out vacuum extraction on it. The vacuum device connects the vacuum tube from the storage tank to the calcium chloride reactor, and then connects the calcium oxide reactor to the 2X-15 rotary vane vacuum pump. The vacuuming time is 8 minutes, the vacuum degree is -0.1 Pa, and the tem...

Embodiment 2

[0040] Such as figure 1As shown, first, the inner iron core of the worm gear is cleaned and descaled with an ultrasonic cleaner, and then soaked in methane coupling agent KH550 with a concentration of 35% for 9 minutes. Put the soaked iron core and the mold together into a drying oven for preheating, the preheating temperature is 160°C, the iron core preheating time is 4 hours, and the worm wheel mold preheating time is 2 hours. The nylon raw material is melted, and the melting temperature must not exceed 140°C. Select 99.45% nylon raw material, 0.3% catalyst, 0.35% chemical aid, 0.03% nylon oil, 0.3% modifier, and 0.03% toner. In the storage tank, stir evenly. Connect the vacuum device and carry out vacuum extraction on it. The vacuum device connects the vacuum tube from the storage tank to the calcium chloride reactor, and then connects the calcium oxide reactor to the 2X-15 rotary vane vacuum pump. The vacuuming time is 9 minutes, the vacuum degree is -0.1 Pa, and the t...

Embodiment 3

[0046] Such as figure 1 As shown, firstly, the inner iron core of the worm gear is cleaned and descaled with an ultrasonic cleaner, and then soaked in 35% methane coupling agent KH550 for 10 minutes. Put the soaked iron core and the mold together into a drying oven for preheating, the preheating temperature is 165°C, the preheating time for the iron core is 4 hours, and the preheating time for the worm gear mold is 3 hours. The nylon raw material is melted, and the melting temperature must not exceed 140°C. Select 98.99% of nylon raw material, 0.1% of catalyst, 0.2% of chemical aid, 0.02% of nylon oil, 0.2% of modifier, and 0.02% of toner. In the storage tank, stir evenly. Connect the vacuum device and carry out vacuum extraction on it. The vacuum device connects the vacuum tube from the storage tank to the calcium chloride reactor, and then connects the calcium oxide reactor to the 2X-15 rotary vane vacuum pump. The vacuuming time is 10 minutes, the vacuum degree is -0.1 ...

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Abstract

The invention provides a special nylon worm gear for EPS of an automobile and a preparation method thereof. The special nylon worm gear is composed of a nylon worm gear and an iron core compounded in the nylon worm gear. The nylon worm gear comprises, by weight, 98.99 to 99.46% of a nylon raw material, 0.1 to 0.3% of a catalyst, 0.2 to 0.35% of an assistant catalyst, 0.02 to 0.03% of nylon oil, 0.2 to 0.3% of a modifier and 0.02 to 0.03% of toner. The special nylon worm gear is prepared through cleaning, preheating, heating, catalytic modification, casting and polymerization, thermal refining and cooling. The prepared special nylon worm gear can be used for EPS of the automobile to replace a metal worm gear and has the advantages of light weight, low noise, corrosion resistance, impact resistance, and easiness in designing, processing and molding.

Description

technical field [0001] The invention relates to a special nylon worm gear for automobile EPS electric power steering and a preparation method thereof, belonging to the technical field of polymer nylon materials. Background technique [0002] With the continuous development of automotive electronic technology, at present, some high-end car configurations of joint ventures have used EPS, which has improved the economy, power, mobility and safety of the car. Therefore, EPS has been rapidly promoted in recent years, and it is also an inevitable trend of future development. Power steering is used more and more widely in various automobiles. Especially in recent years, with the substantial increase in the number of automobiles, energy and environmental protection issues have become increasingly prominent. Energy-saving and environmentally friendly EPS has been welcomed by more automobile manufacturers. And because the electric steering system uses an electric motor instead of a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L91/00C08G69/16C08K3/30C08K5/29B29C39/10B29C39/44B29C71/02B29K77/00
CPCC08L77/02B29C39/10B29C39/44B29C71/02B29K2077/00C08G69/16
Inventor 张可
Owner 宿迁中盛尼龙有限公司
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