High-smoothness polishing rod for mechanical shaft

A high-finish, polished rod technology, applied in the direction of metal rolling, furnace type, furnace, etc., can solve the problem of high surface roughness of polished rods, and achieve the effect of reducing requirements, high smoothness and simplifying processing technology

Inactive Publication Date: 2020-11-20
浙江晋椿精密工业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polishing rods for mechanical shafts produced by traditional materials and processing techniques often have high surface roughness. When used in some demanding occasions, it is often necessary to improve this problem by machining

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A high-gloss polishing rod for mechanical shafts, comprising the following components: C: 0.180%, Si: 0.200%, Mn: 0.420%, P: 0.006%, S: 0.002%, Mo: 0.015%, Ni: 0.015 %, Cr: 0.040%, Cu: 0.020%, Sn: 0.010wt%, Sb: 0.010wt%, Cr: 10.5wt%, N: 0.010wt%, V: 0.250wt%, Ce: 0.800wt%, Co: 0wt%, Nb: 0.010wt%, B: 0.002wt%, Ti: 0.300%, the rest is Fe and impurity elements;

[0034] Casting: Melt the above raw materials into molten steel and continuously cast them into billets, heat the billets to 1100°C and forge them;

[0035] Rolled wire rod: A1: The steel billet after forging is subjected to four-roll rough rolling and finish rolling respectively, and the wire rod after finishing rolling is rolled and then hot-loaded off-line for heat treatment to ensure good and uniform cold working performance; each step in step A1 The elongation of the second rough rolling is 15%, and the elongation of each finish rolling is 5%.

[0036] A2: Put the rolled wire rod into the annealing furnace, ...

Embodiment 2

[0053] A high-gloss polishing rod for a mechanical shaft, comprising the following components: C: 0.220%, Si: 0.240%, Mn: 0.500%, P: 0.010%, S: 0.003%, Mo: 0.025%, Ni: 0.025 %, Cr: 0.060%, Cu: 0.035%, Sn: 0.150wt%, Sb: 0.015wt%, Cr: 13.0wt%, N: 0.020wt%, V: 0.800wt%, Ce: 1.300wt%, Co: 0.0300wt%, Nb: 0.080wt%, B: 0.004wt%, Ti: 0.800%, the rest is Fe and impurity elements;

[0054] Casting: Melt the above raw materials into molten steel and continuously cast them into billets, heat the billets to 1150°C and forge them;

[0055] Rolled wire rod: A1: The steel billet after forging is subjected to four-roll rough rolling and finish rolling respectively, and the wire rod after finishing rolling is rolled and then hot-loaded off-line for heat treatment to ensure good and uniform cold working performance; each step in step A1 The elongation of the second rough rolling is 20%, and the elongation of each finish rolling is 10%.

[0056] A2: Put the rolled wire rod into the annealing fu...

Embodiment 3

[0073] A high-gloss polishing rod for a mechanical shaft, comprising the following components: C: 0.200%, Si: 0.220%, Mn: 0.480%, P: 0.008%, S: 0.0025%, Mo: 0.020%, Ni: 0.020 %, Cr: 0.050%, Cu: 0.0275%, Sn: 0.0125wt%, Sb: 0.0125wt%, Cr: 11.5wt%, N: 0.015wt%, V: 0.520wt%, Ce: 1.05wt%, Co: 0.015wt%, Nb: 0.045wt%, B: 0.003wt%, Ti: 0.550%, the rest is Fe and impurity elements;

[0074] Casting: Melt the above raw materials into molten steel and continuously cast them into billets, heat the billets to 1125°C and forge them;

[0075] Rolled wire rod: A1: The steel billet after forging is subjected to four-roll rough rolling and finish rolling respectively, and the wire rod after finishing rolling is rolled and then hot-loaded off-line for heat treatment to ensure good and uniform cold working performance; each step in step A1 The elongation of the second rough rolling is 17%, and the elongation of each finish rolling is 8%.

[0076] A2: Put the rolled wire rod into the annealing f...

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PUM

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Abstract

The invention discloses a high-smoothness polishing rod for a car window lifting worm. The high-smoothness polishing rod comprises the following components of 0.180%-0.220% of C, 0.200%-0.240% of Si,0.420%-0.500% of Mn, 0.006%-0.010% of P, 0.002%-0.003% of S, 0.015%-0.025% of Mo, 0.015%-0.025% of Ni, 0.040%-0.060% of Cr, 0.020%-0.035% of Cu, 0.010%-0.150wt% of Sn, 0.010%-0.015wt% of Sb, 10.5%-13.0wt% of Cr, 0.010%-0.020wt% of N, 0.250%-0.800wt% of V, 0.800%-1.300wt% of Ce, 0-0.0300wt% of Co, 0.010%-0.080wt% of Nb, 0.002%-0.004wt% of B, 0.300%-0.800% of Ti and the balance Fe and impurity elements. In addition, the invention further discloses machining steps of the high-smoothness polishing rod for the car window lifting worm.

Description

technical field [0001] The invention belongs to the technical field of polishing rod production, and in particular relates to a high-gloss polishing rod for mechanical shafts. Background technique [0002] The shaft (shaft) is a cylindrical object that goes through the middle of the bearing or the middle of the wheel or the middle of the gear, but there are also a few of them that are square. A shaft is a mechanical part that supports and revolves with a rotating part to transmit motion, torque or bending moment. Generally, it is in the shape of a metal round rod, and each segment can have different diameters. The parts that make rotary motion in the machine are mounted on the shaft. Polishing rods for mechanical shafts produced by traditional materials and processing techniques often have high surface roughness. When used in some demanding occasions, it is often necessary to improve this problem by machining. Contents of the invention [0003] The object of the present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/42C22C38/44C22C38/46C22C38/48C22C38/50C22C38/52C22C38/54C22C38/60C21D1/26C21D1/74C21D6/00C21D8/06C21D9/52B21B1/16B21C1/02
CPCB21B1/16B21C1/02C21D1/26C21D1/74C21D6/004C21D6/005C21D6/007C21D6/008C21D8/065C21D9/525C22C38/001C22C38/002C22C38/005C22C38/008C22C38/02C22C38/04C22C38/42C22C38/44C22C38/46C22C38/48C22C38/50C22C38/52C22C38/54C22C38/60
Inventor 丁伟书
Owner 浙江晋椿精密工业股份有限公司
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