RU131328U1 - THE PLUGNY CHAMBER OF THE INCREASED RESISTANCE TO THE FORMATION OF RADIATION WEAR - Google Patents

Abstract

The utility model relates to the field of agricultural engineering and welding production, in particular to the manufacture and hardening of plow shares operating in conditions of intense abrasive wear. The essence of the utility model is as follows. The thickness of the share in comparison with the serial is 14 mm. The chisel-like area is a bimetallic system, where the upper part with a hardness of HRC 58-60 serves as a working surface that resists the formation and development of illusory wear, and the lower part is made together with the skeleton and serves as the basis for the formation of a wear-resistant layer.

Description

The utility model relates to the field of agricultural engineering and welding production, in particular to the manufacture and hardening of plow shares operating in conditions of intense abrasive wear.

Known ploughshare, the design of which consists of a skeleton and a heat-strengthened bit welded to it, reinforced by surfacing with rollers located perpendicular to the field edge with a pitch of 30-40 mm, or perpendicular to the movement of soil. Rollers are formed by surfacing with an electrode designed for welding carbon and low alloy steels [1].

The imperfection of this design should be considered insufficient abrasion resistance during ploughshare operation on soils containing a large amount of quartz particles, leading to the appearance of lucid wear in the toe region: In addition, surfacing of reinforcing rollers with a low-carbon rod electrode reduces the wear resistance due to the annealing effect leading to reducing the hardness of the bit-like part of the part.

Closest to the claimed are all-metal ploughshare, 10-12 mm thick including mounting holes, a base, a cutting part having a blade and a chisel-like sock protruding in front of the blade [2], and the same ploughshare, but welded with hard alloy from the back so that there would be an equalization of the wear wear of the sock and the cutting blade part [3].

The disadvantage of these shares is the lack of solutions in the design aimed at preventing and inhibiting the formation of lucid wear on the working surface of the chisel-like area, leading to a decrease in resource during plowing of soils with high wearing ability.

The purpose of the utility model is to increase the resistance of the all-metal share to the formation and to prevent the development of radial wear on the working surface of its chisel-like part.

This goal is achieved by the fact that the following changes and additions are made to the design of the all-metal ploughshare: the ploughshare thickness is 14 mm (when the thickness specified by the technical specifications and accepted by the manufacturers is 10-12 mm); the chisel-like area is a two-layer metal system, the first part of which is made of carbon plough steel, made as a whole with a base, but not less than 10 mm thick, and applied to this part of the abrasion-resistant layer (second part of the system) 3-4 mm thick; so that their total thickness does not exceed 14 mm, i.e. base thickness. As a result of such surfacing, the chisel-like part of the ploughshare is a bimetallic system. Obtaining such a thickness of the hardened layer is possible by electric arc welding using a manual or mechanized method. The electrode material can be piece electrodes or wires, both solid and flux-cored, providing a coating hardness of at least 58-60 HRC. The presence of a solid layer and a heat-affected zone (where hardness is also high) will ensure the prevention and inhibition of the formation of radial wear for a long time. The increased thickness of the shares will reduce the likelihood of warping exceeding permissible standards. In addition, surfacing should be carried out by methods ensuring minimum residual stresses after having previously fixed the share in the clamps. The width of the surfacing should correspond to the width of the chisel-like part of the share and be made over its entire length. In addition to creating conditions for inhibiting the development of lateral wear, such surfacing helps to maintain sharpening of the field edge. The pull resistance of the plow, sticking and crumbling of the soil will be the same as when using the standard ploughshare, since the level of the deposited metal corresponds to the level of the working surface.

The specified set of essential features provides the claimed ploughshare properties other than the prototype. This is: the presence of a greater thickness of the base of the ploughshare in comparison with the standard component of 14 mm; the chisel-like area of the product consists of two parts, which are a bimetallic system in which the upper abrasion-resistant layer has a hardness of HRC 58-60 and a thickness of 3-4 mm, and the lower HRC 23-25 and a thickness of at least 10 mm; the thickness of the formed chisel area does not exceed the thickness of the base. The presence of a thickness of 14 mm makes it difficult to warp the share when receiving the coating. In the case of the proposed bimetallic system, the outer layer and the heat-affected zone performs the function of an abrasion-resistant component, and the lower role is the main share. The presence of the listed factors in the design creates the conditions for increasing the resistance to the development of lateral wear.

Thus, the claimed features of the utility model meet the criterion of "novelty."

In (figure 1) presents the design of the proposed share:

1 - bit-like part; 2 - base; 3 - metal base; 4 - upper abrasion resistant layer.

Surfacing of the second layer is carried out, for example, with T-590 or T-620 electrodes. The production of such a share on soils with a deteriorating capacity of more than 250 g / ha exceeded the serial production by 3-4 times.

Information sources

1 Utility Model Patent No. 101891 Plowshare for dump plowing / Mikhalchenkov A.M., Parshikova L.A., Kuzyur V.M. Bull. No 4 on 02/10/2011.

2 USSR Author's Certificate No. 1355143 Plowshare / D.B. Bershtein, M.M. Firsov, Yu.A. Babin, I.V. Liskin, V.M. Smirnov. Bull. No. 11 dated 03/23/1993.

3 GOST R 50694-94. Machines and implements for tillage. Lemesno - dump plows. - M .; Gosstandart of Russia. - 10 s.

Claims (1)

Plow share, comprising a base with mounting holes, a cutting part having a blade, and a chisel-like region protruding in front of the blade, characterized in that the ploughshare is at least 14 mm thick, the chisel-like region is bimetallic, while its upper abrasion-resistant layer has an HRC hardness 58-60 and a thickness of 3-4 mm, and the bottom layer is made in one piece with the base and has a hardness of HRC 23-25 and a thickness of at least 10 mm.

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