Friction- and wear-reducing joint for a bush chain or roller chain
US-2015211603-A1 · Jul 30, 2015 · US
Wear-resistant chain pin
US9638284B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9638284-B2 |
| Application number | US-201414772104-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 12, 2014 |
| Priority date | Mar 14, 2013 |
| Publication date | May 2, 2017 |
| Grant date | May 2, 2017 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
Problem. To provide a chain pin which makes it possible to improve wear resistance even in an environment in which degraded oil is used. Solution. A large number of pins are mixed/agitated together with a particle mixture including a penetrant comprising chromium (Cr) powder and tungsten carbide (WC) powder, and an iron chloride (FeCl 3 ) catalyst, and WC particles penetrate the surface of the pins together with chromium carbide (CrC). As a result, a chromium carbide layer in which WC particles are diffused in a CrC layer (CrC—WC layer) is formed on the outermost surface part of the steel forming the parent material of the pins.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for producing a wear-resistant chain pin, wherein a steel material forming the parent material of the pin is introduced into a vessel together with chromium, tungsten carbide and a halide catalyst, and stirring is performed inside the vessel under a temperature of 750-950° C. in order to form a diffusion coating on the steel material, whereby a chromium carbide layer in which tungsten carbide is diffused is formed on the outermost surface part of the steel material. 2. The method for producing a chain pin as claimed in claim 1 , wherein the halide is iron chloride.
Assignees
Inventors
Classifications
Chains (making thereof B21L) · CPC title
with links closely interposed on the joint pins (F16G13/04 takes precedence) · CPC title
Driving-chains (specially adapted to gearings with variable gear-ratio F16H9/00) · CPC title
more than one element being applied in one step · CPC title
Diffusion in one step · CPC title
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Frequently asked questions
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- What does patent US9638284B2 cover?
- Problem. To provide a chain pin which makes it possible to improve wear resistance even in an environment in which degraded oil is used. Solution. A large number of pins are mixed/agitated together with a particle mixture including a penetrant comprising chromium (Cr) powder and tungsten carbide (WC) powder, and an iron chloride (FeCl 3 ) catalyst, and WC particles penetrate the surface of the …
- Who is the assignee on this patent?
- Borgwarner Inc
- What technology area does this patent fall under?
- Primary CPC classification F16G13/04. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue May 02 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).