RU2450496C1 - Plowshare of increased resistance to abrasive wear - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: invention may be used in the manufacture of plowshares of plows for different purposes. Increasing resistance of plowshares to abrasive wear is achieved by welding on metal of high hardness (60 HRC) on the width of 7-8 mm along the landward edge and the blade part of the edge in the form of chisel and welding with deep penetration of the same alloy at the lower part of the edge at a distance of 60-80 mm. The rest is reinforced with filler by welding of rollers of width of 4-5 mm with a spacing of 30 mm by electrodes for welding carbon steels perpendicular to displacement of soil.

EFFECT: plowshare has even wearing capacity of the entire surface of the edge.

1 dwg

Description

The invention relates to the field of agricultural, irrigation and forestry engineering, in particular to plowshares of plows for various purposes.

Known design of the ploughshare, consisting in the presence on the entire area of the working surface of the protrusions (corrugations) with a semicircle profile located perpendicular to the field edge with a pitch of 30-40 mm, providing increased wear resistance [1]. The disadvantages of this share are: a relatively high consumption of metal for surfacing of riffles, and although the wear resistance is increased in comparison with standard parts, it cannot be considered sufficient, since during the plowing of sandy soils with high humidity their running time to failure is not large due to the rapid wear of the field edge and blade chisels; depending on the granulometric composition of the soil, the presence of corrugations on the entire working surface is often not required.

The closest solution to the claimed one is the design, representing the presence of reinforcing rollers in the area of the toe of the share, where the formation of lateral wear and fusion of the lower part of the toe at a distance of not less than 100 mm [2]. This design does not allow to avoid wear of the field edge and the blade part of the share of the share. Surfacing produced by electrodes for welding carbon steels will also not contribute to an increase in resistance to abrasive wear.

The aim of the invention is to increase the abrasive wear resistance of the share, preventing wear of the field edge and the blade of the bit.

This goal is achieved by the fact that the working surface is surfaced along its contour along the field edge and the blade part of the bit with penetration to a depth of about 3-4 mm and a width of 7-8 mm. An electrode intended to produce a deposited metal of high hardness, about 60 HRC, is used as the electrode material. The lower part of the sock is fused over the entire surface to a length of about 60-80 mm. Surfacing the bottom of the sock is also carried out by carbide electrodes with deep penetration. The rest of the sock is subjected to surfacing reinforcement by applying rollers perpendicular to the movement of soil in this area. The width of the applied rollers is 4-5 mm with a distance between them (pitch) of 30 mm. Surfacing reinforcement is made by electrodes for welding and surfacing of carbon steels. The presence of a deposited metal layer with a hardness of approximately 60 HRC around the perimeter of the outer nose with deep penetration will increase the abrasion resistance for a long time by maintaining the geometric shape of the product. Deep penetration will not only contribute to increased wear resistance, but will not have a significant impact on traction resistance, since the elevation of the roller above the share surface will be minimal. The fused lower part with the use of surfacing materials for wear-resistant surfacing will reduce the wear on the thickness, since in this area the soil pressure is maximum. When reinforcing the upper zone, there is no need to use carbide electrodes, since the soil pressure here is not so significant as in the lower part. As a result, it is possible to create a wear surface along its entire length, taking into account the wear rate in each individual area of the surface of the toe.

The specified set of essential features will ensure that the claimed ploughshare has new properties that are different from the prototype. This is, firstly, the presence of a strip of high hardness (HRC 60) in the blade part of the toe and field edge; secondly, conditions are created for wear on the entire surface of the bow.

Thus, the claimed features of the invention meet the criterion of "novelty."

The drawing shows the design of a ploughshare of increased resistance to abrasive wear, including the following elements (figure 1):

1 - deposited hard layer along the field edge,

2 - melted hard alloy lower part of the sock,

3 - deposited hard alloy along the blade,

4 - reinforcing rollers.

Tests of the proposed share design in the field showed that its operating time to the limit state exceeds the similar operating time of a standard share by 2.5-3 times.

Information sources

1. Patent for a utility model. The plow share for dump plowing with a corrugated working surface (Mikhalchenkov A.M. share), Mikhalchenkov A.M., Tyureva A.A., Zueva D.S., No. 90287, Bull. No 1 on January 10, 2010.

2. Patent for a utility model. Working body for cutting soil (ploughshare), Mikhalchenkov A.M., Parshikov P.A., Kozhukhova Yu.I., No. 92756, Bull. No. 10 dated 04/10/2010.

Claims (1)

A ploughshare of increased resistance to abrasive wear, characterized in that a 60 HRC high hardness metal was welded to a width of 7-8 mm along the contour along the field edge and the blade part of the sock and the lower part of the sock was melted to a value of 60-80 mm with deep penetration, and the remainder of the sock with electrodes for welding carbon steels weld beads 4-5 mm wide with a pitch of 30 mm perpendicular to the movement of the soil.