Chain Component And Chain

A technology for chains and parts, applied in transmission chains, coatings, metal material coating processes, etc., can solve the problems of poor adhesion and peeling of substrates, and achieve small damage, good wear resistance, and good wear resistance. The effect of elongation

Inactive Publication Date: 2017-03-08
TSUBAKIMOTO CHAIN CO
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  • Abstract
  • Description
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Problems solved by technology

[0014] Japanese Patent Application Publication No. 11-29848 discloses that in order to solve the problem that thermal process peeling easily occurs when a chromium nitride film is formed on the metal surface, and the adhesion performance with the substrate is deteriorated, after the surface of the metal material is chromium-plated, the metal material is coated in a halogen compound. Or heating the metal material in a halogen-containing reactive gas to purify and activate the surface of the chromium plating layer, and then heating in a nitriding atmosphere to nitride the surface of the chromium plating layer to form a chromium nitride film

Method used

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  • Chain Component And Chain
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] As the material to be processed in Example 1, the wire rod of SUJ2 was cut to a predetermined length and subjected to grinding treatment to obtain a base of the pin 6 as a steel base.

[0083] To be formulated within the above numerical range, including Cr powder, alumina, and NH 4 The Cl treatment agent and the pin 6 are accommodated in the alumina boat, and the alumina boat is put into the heating furnace. Replace with inert gas (air in the heating furnace), and add gas (NH 3 and N 2 ), the temperature is raised to the above-mentioned temperature, and the temperature is maintained to form a chromium nitride layer 61 on the outside of the pin 6 . Thereafter, the power to the heater was turned off, and the temperature was gradually cooled.

[0084] As described above, the pin 6 having the chromium nitride layer 61 formed on the outer side of the steel substrate was obtained.

[0085] The Fe content of the chromium nitride layer 61 is 13% by mass, the Cr content is 7...

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Abstract

A chain component which has a simple surface treatment structure and in which satisfactory wear resistance is maintained for a long term; and a chain which employs this chain component so that a satisfactory wear elongation resistance is maintained are provided. A roller chain serving as an industrial chain for power transmission is constructed such that a pair of outer plates linked by two pins and a pair of inner plates linked together by two bushes onto each of which a roller is fit are alternately linked together in a plurality in a state that each pin is loosely fit in each bush. A chromium nitride layer is formed on the outer side of the steel-based substrate of the pin. The chromium nitride layer contains iron at a content higher than 0 mass % and lower than or equal to 55 mass %.

Description

technical field [0001] The present invention relates to components of industrial power transmission chains such as roller chains and silent chains used as timing chains for automobiles, that is, chain parts such as pins, bushes, link plates, and rollers, and chain parts equipped with the same chain. Background technique [0002] It is known that by forming a chromium nitride film on the metal surface, the wear resistance and corrosion resistance of the metal can be improved, and this technique of forming a chromium nitride film is widely used in order to extend the life of mechanical components, molds, tools, etc. . [0003] The chromium nitride film is usually formed by forming Cr into chromium vapor and ionized in a vacuum chamber, directing it to the substrate, introducing nitrogen gas to form an ion plating method, and applying a high voltage between the target and the substrate to cause glow discharge to occur, so that the plasma The bulked Ar ions impact the surface ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C12/00F16G13/06
CPCC23C12/00F16G13/06C23C12/02C23C10/08C23C10/32C23C30/00F16G13/04F16G13/08C22C27/06C23C8/24C23C10/40C23C10/54F16G13/02C23C8/00
Inventor 朝田美沙川田尚史中安友明吉本幸太内田修弘
Owner TSUBAKIMOTO CHAIN CO
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