T/WJS 2-2021 Active Group standards

T/WJS 2-2021 scoop。

Publish Date: 2021-11-11 Implement Date: 2021-12-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/WJS 2-2021

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Agricultural and forestry machinery and equipment

ICS Name: Hand tools

Publish Date: 2021-11-11

Implement Date: 2021-12-01

Scope

Main technical content: 5.1 Materials: The raw materials of steel shovels shall comply with the provisions of GB/T 699 or the current standards of corresponding grades that meet the requirements of this document. 5.2 Appearance quality: The surface of steel shovels shall be smooth and flat, without delamination, cracks, chipped edges, burrs, flying edges, leaked holes, and other defects that affect their performance, such as spots, pits, and oxide scale. The surface of steel shovels shall be coated with anticorrosive layers such as paint and plastic powder, and there shall be no missing coating, peeling, bubbling, or rust. The edge of steel shovels shall be smooth and uniform. When viewed from the vertical side of the shovel body, the edge shall form a continuous smooth curve. When viewed from the horizontal side of the shovel body, the edge shall form a black line. 5.3 Basic dimensions, quality, and allowable deviations: The basic dimensions, quality, and allowable deviations of steel shovels shall comply with the provisions of Table 1 (omitted). The roundness error of the inner diameter (or outer diameter) of shovel pockets shall not exceed 2. The seam of shovel pockets, starting from the beginning end and within a length of 30, shall not exceed 1.5 in width. The line connecting the tip of the shovel pocket to the center of the front width (shovel tip) shall be symmetrical to the sides and the front end of the nose ridge, with a symmetry of 3. The rivet holes shall be located on the line connecting the tip of the shovel pocket to the center of the front width (shovel tip), with a symmetry of 2. 5.4 The length of the heat-treated area shall not be less than 2/3 of the total length of the shovel body. 5.5 Hardness: The hardness of the quenched area of steel shovels shall be Grade A 45 HRC-53 HRC, and Grade B 32 HRC-40 HRC. When the bending (or static load) performance indicators meet the requirements of this standard, the hardness value may exceed the upper