Unlock instant, AI-driven research and patent intelligence for your innovation.

A wear-resistant shaft

A shaft and section technology, applied in the field of alloy materials, can solve problems such as poor bonding between the chromium layer and the substrate, peeling of the chromium layer, and blistering, etc., and achieve the effects of improving hardness, bright chrome plating, and reducing wear rate

Active Publication Date: 2018-03-13
NINGBO YINZHOU HAISHENG MACHINERY
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Practice has proved that these two materials are chrome-plated by conventional electrochrome plating methods, not only the bonding force between the chromium layer and the substrate is not good, the chromium layer peels, blisters or falls off, but also there is a phenomenon that the chromium cannot be deposited locally.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A wear-resistant shaft
  • A wear-resistant shaft

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 The shown wear-resistant shaft includes a cylindrical shaft body, and the shaft body is divided into a first section 1, a second section 2, a third section 3, and a fourth section from front to back 4. The fifth section 5 and the sixth section 6, the third section 3 is located in the middle of the shaft body, and the surfaces of the first section 1, the third section 3 and the fifth section 5 of the wear-resistant shaft are electroplated with a layer Chromium plating with a thickness of 0.05-0.08mm. The wear-resistant shaft is made by forging alloy steel, and is made by rare earth nitriding process at 500-520°C. The alloy steel is composed of the following components (in mass percentage): C: 0.30%, Si : 0.18%, Mn: 1.05%, Cr: 1.30%, Mo: 0.18%, Ni: 0.9%, Cu: 0.12%, B: 0.005%, V: 0.16%, Nb: 0.20%, the balance is Fe and not Avoid impurity elements.

[0036] The chromium plating layer is formed by electroplating and then annealing on the surfaces of the f...

Embodiment 2

[0039] The difference between this embodiment and embodiment 1 is only:

[0040] The surfaces of the first section 1, the third section 3 and the fifth section 5 of the wear-resistant shaft are electroplated with a layer of chrome plating with a thickness of 0.05-0.08mm. The wear-resistant shaft is made by forging alloy steel, and is made by rare earth nitriding process at 500-520°C. The alloy steel is composed of the following components (by mass percentage): C: 0.26%, Si : 0.20%, Mn: 1.0%, Cr: 1.50%, Mo: 0.15%, Ni: 1.0%, Cu: 0.08%, B: 0.006%, V: 0.12%, Nb: 0.25%, the balance is Fe and not Avoid impurity elements.

[0041] The composition and proportion of the electroplating solution used in electroplating is CrO 3 :160g / L, H 2 SO 4 :1.6g / L, Cr 3+ : 1.5g / L, CrO 3 :H 2 SO 4 =95:100-100:105; Working temperature is 54℃, preheating of plated parts is 0.4min, anode etching is 14s.

Embodiment 3

[0043] The difference between this embodiment and embodiment 1 is only:

[0044] The surfaces of the first section 1, the third section 3 and the fifth section 5 of the wear-resistant shaft are electroplated with a layer of chrome plating with a thickness of 0.05-0.08mm. The wear-resistant shaft is made by forging alloy steel, and is made by rare earth nitriding process at 500-520°C. The alloy steel is composed of the following components (by mass percentage): C: 0.35%, Si : 0.15%, Mn: 1.1%, Cr: 1.00%, Mo: 0.20%, Ni: 0.8%, Cu: 0.15%, B: 0.004%, V: 0.20%, Nb: 0.15%, the balance is Fe and not Avoid impurity elements.

[0045] The composition and proportion of the electroplating solution used in electroplating is CrO 3 :190g / L,H 2 SO 4 :1.9g / L, Cr 3+ : 3.0g / L, CrO 3 :H 2 SO 4 =95:100-100:105; working temperature is 53℃, preheating of plated parts is 0.7min, and anode etching is 13s.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to an abrasion-resistant shaft, and belongs to the technical field of alloy materials. The abrasion-resistant shaft comprises a cylindrical shaft body. The shaft body is divided into a first section, a second section, a third section, a fourth section, a fifth section and a sixth section sequentially from front to back, and the third section is located in the middle of the shaft body. The abrasion-resistant shaft is formed by forging alloy steel and manufactured through a rare earth nitriding process at the temperature of 530-550 DEG C. The alloy steel comprises 0.25-0.39% of C, 0.12-0.22% of Si, 0.9-1.1% of Mn, 1.00-1.80% of Cr, 0.12-0.22% of Mo, 0.6-1.2% of Ni, 0.05-0.2% of Cu, 0.003-0.006% of B, 0.08-0.25% of V, 0.1-0.3% of Nb and the balance Fe and unavoidable impurity elements. The abrasion-resistant steel is high in hardness and strength, low in abrasion rate and long in service life.

Description

technical field [0001] The invention relates to a wear-resistant shaft and belongs to the technical field of alloy materials. Background technique [0002] The 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 a small part is also 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 the parts for rotary motion in the machine are mounted on the shaft. Currently used shafts, because the materials used are bearing steel, have a large working friction coefficient and weak wear resistance of materials, and the wear is serious at the moment of starting, which affects the service life of the shaft. Most of the shaft wear is not easy to detect. Only when the machine has high temperature, large beating range, abnormal noise, etc., people will notice it. production effi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/04C22C38/02C22C38/18C22C38/12C22C38/08C22C38/16C22C38/32C25D5/50C25D3/08
CPCC22C38/02C22C38/04C22C38/08C22C38/12C22C38/16C22C38/18C22C38/32C25D3/08C25D5/50
Inventor 李建忠
Owner NINGBO YINZHOU HAISHENG MACHINERY