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Heat-resisting steel ferrule channel grinding technology

A technology of heat-resistant steel and grooves, applied in grinding/polishing equipment, grinders, manufacturing tools, etc., can solve problems such as carbide shedding and white spots, and achieve the effect of improving the surface quality of grooves

Active Publication Date: 2016-09-28
AVIC HARBIN BEARING
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] In order to solve the problem that the heat-resistant steel ferrule is pickled directly after the rough grinding channel and the fine grinding channel process, the carbides fall off, and the small pits formed on the surface of the ferrule channel will form "white pits" after pickling corrosion. Point” problem, and then proposed a heat-resistant steel ferrule groove grinding process

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  • Heat-resisting steel ferrule channel grinding technology
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specific Embodiment approach 1

[0017] Specific implementation mode one: combine figure 2 Describe this embodiment, the processing step of this embodiment is as follows:

[0018] Step 1, rough grinding channel; Step 2, fine grinding channel; Step 3, rough grinding channel once; Step 4, pickling; Step 5, dehydrogenation; Step 6, finishing decoration; Step 7, flaw detection; Step 8 1. Roughly grind the channel for the second time; step 9, finely grind the channel.

[0019] In this embodiment, when the groove is roughly ground in step 1, when the grinding allowance is 0.12-0.15mm away from the diameter of the final grinding groove, the grinding feed rate is adjusted from 2-3 μm / s for initial rough grinding to 1μm / s, feed rate ≤50μm. Other steps are the same as in the first embodiment.

[0020] In this embodiment, the grinding feed rate of the fine grinding channel in step 2 is 1 μm / s, and the feed rate is ≤50 μm. Other steps are the same as in the first embodiment.

[0021] In this embodiment, when the ch...

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Abstract

The invention relates to a grinding technology, in particular to a heat-resisting steel ferrule channel grinding technology to solve the problems that a heat-resisting steel ferrule is directly subjected to acid pickling after the rough channel grinding procedure and the fine channel grinding procedure, carbide falls off, small pits are formed in the surface of a ferrule channel, and white spots can be formed after corrosion of acid pickling. The heat-resisting steel ferrule channel grinding technology comprises the following steps that firstly, rough channel grinding is conducted; secondly, fine channel grinding is conducted; thirdly, primary rough channel grinding is conducted; fourthly, acid pickling is conducted; fifthly, hydrogen is removed; sixthly, fine polishing is conducted; seventhly, flaw detection is conducted; eighthly, secondary rough channel grinding is conducted; and ninthly, fine channel grinding is conducted. The grinding technology is used for grinding the ferrule.

Description

technical field [0001] The invention relates to a grinding process, in particular to a heat-resistant steel ferrule groove grinding process. Background technique [0002] The existing heat-resistant steel ferrule process flow is: rough grinding channel→fine grinding channel→pickling→hydrogen removal→finishing→flaw detection→rough grinding channel→finishing channel. However, there are carbide particles distributed inside the heat-resistant steel material. During the grinding process (especially for ferrules with a larger groove radius of curvature R), some carbides fall off due to excessive grinding force, and on the surface of the ferrule groove Small pits are formed. When pickling, the pickling liquid penetrates into this small pit and will form a pickling corrosion layer (white spots), see figure 1 , The pickling corrosion layer still exists after lapping the trench, resulting in "white spots" on the trench surface. Therefore, the generation of "white spots" in the ferr...

Claims

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Application Information

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IPC IPC(8): B24B19/06
CPCB24B19/06
Inventor 李迎丽孙慧广高阳郝陶雪刘勇王福成马炳辉
Owner AVIC HARBIN BEARING
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