Cold-rolled steel sheet for precision stamping chain saw guide plate with tensile strength of 1050MPa

Abstract

The invention discloses a cold-rolled steel plate for a precision stamping chain saw guide plate with the tensile strength being 1050 MPa. The technical problems that an existing steel plate for the chain saw guide plate is high in manufacturing cost and complex in machining technology are solved. According to the technical scheme, the cold-rolled steel sheet with the tensile strength of 1050 MPa for the precise stamping chain saw guide plate comprises the following chemical components in percentage by weight: 0.52-0.58% of C, 0.10-0.30% of Si, 0.70-0.80% of Mn, less than or equal to 0.015% of P, less than or equal to 0.003% of S, 0.15-0.35% of Cr, 0.01-0.03% of Al, less than or equal to 0.0060% of N and the balance of Fe. And the balance of Fe and inevitable impurities. The percentage elongation after fracture A50mm of the cold-rolled steel plate with the thickness of 0.80-1.60 mm is 5-8%, and the Rockwell hardness is 33-37 HRC. The cold-rolled steel sheet is low in manufacturing cost and is used as a part such as a chain saw guide plate for high-speed cutting support and operation.

Description

technical field [0001] The invention relates to a cold-rolled steel plate for precision stamping, in particular to a cold-rolled steel plate for a precision stamping chain saw guide plate with a tensile strength of 1050 MPa and a manufacturing method thereof, belonging to the technical field of iron-based alloys. Background technique [0002] A chainsaw is a portable power cutting tool mainly used in forest logging, garden trimming, and furniture industries. In forestry production, especially in the field of forest harvesting, it has been widely used in timber yard construction, sleeper cutting and sawing, etc. The working end of the sawing structure at the front end of the chain saw is mainly composed of a driving sprocket, a saw chain, a guide plate, a cutter head, etc. The chain saw guide plate, also known as a chain plate and a saw plate, is an indispensable and important component of the chain saw transmission system; the main function is to Support the saw chain, so t...

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Problems solved by technology

[0005] The object of the present invention is to provide a precision stamping cold-rolled steel plate for a chainsaw guide plate with a tensile strength of 1050 MPa and its manufacturing method, which mainly solves the technical problems of high manufacturing cost and complicated processing technology of the steel plate for the existing chainsaw guide plate

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