A kind of lawn mower cutter preparation method

A lawn mower and knife technology, applied in the field of lawn machine tool preparation, can solve the problems of destroying blade strength and toughness, high cost of pressure welding, long heat preservation time, etc., to improve production efficiency, small stress and deformation, workpiece structure and mechanical The effect of small changes in performance
CN106180941BInactive Publication Date: 2018-07-27YANGZHOU POLYTECHNIC INST
6 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
YANGZHOU POLYTECHNIC INST
Publication Date
2018-07-27
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention discloses a preparation method of a lawn mower tool. The preparation method comprises the following steps of keeping the hardness of a 65Mn material not lower than 62HRC and the hardness of a 45Mn material not higher than 40HRC before soldering; placing a phosphorus-copper solder on the surface of a 45 steel blade matrix to solder, keeping a certain gap between a 65Mn blade and the 45 steel blade matrix, heating a joint region during soldering, after the solder begins to flow, further adding until a joint is filled, and moving a soldering blowpipe back and forth along the joint once the solder begins to flow to enable an upper piece and a lower piece to be uniformly heated, wherein the combustion time of a flame lance does not exceed 3s, and the thickness of the solder does not exceed 0.3mm; and carrying out postweld heat treatment after finishing welding. According to the preparation method, a 5mm tool matrix (made of 45 steel) is connected with a 0.5mm-thick blade (made of 65Mn) through soldering to form a ''blade'' tool edge, so that not only can the toughness of the tool be effectively ensured, but also the relatively good wear resistance and high hardness can be kept.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of lawn machine tool processing, in particular to a method for preparing a lawn machine tool. Background technique

[0002] Since lawn mower cutters are subjected to large impact and vibration loads under actual working conditions, it is necessary to ensure a high connection strength between the blade base and the blade body. Based on this situation, conventional connection and mechanical connection methods are obviously is not desirable. According to the relevant information and performance tests, the preliminary selection of the connection process plan for the two materials is welding. The main methods of welding are divided into fusion welding, pressure welding and brazing. However, fusion welding must ensure that the two materials have similar chemical compositions, especially the C element content, otherwise it will cause serious segregation in the weld after welding, the organization will not be able to fuse, ...

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