JPH049000Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to an abrasion resistant liner.

[Prior Art] Conventionally, abrasion-resistant liners have been used inside casings and the like in ore, coal, etc. crushers. High chromium cast iron and other materials have excellent wear resistance as materials for wear-resistant liners, but on the other hand, they have extremely poor workability and weldability, and mechanical connection methods such as bolts are the only way to attach them to the mounting plate. It was getting worse. Furthermore, the surface where the wear-resistant liner is used may be damaged due to collision or sliding with ore, coal, etc.
When the wear gradually progresses and reaches the level of the bolt head of a square bolt, the square bolt will no longer be able to be securely attached to the wear-resistant liner and the mounting plate, and will no longer be usable. Using a friction welding method different from mechanical coupling means, the use of square bolts is omitted and the durability of the wear-resistant liner is improved.

4 and 5 show the construction of a conventional wear-resistant liner.

In FIGS. 4 and 5, reference numeral 30 denotes a wear-resistant liner, which is manufactured by casting using high chromium cast iron or the like. 36 is wear resistant liner 3
This is a recess provided on the back surface of 0, that is, on the mounting surface 34 side, and is formed in a dish shape. A fitting 38 is frictionally welded to the recess 36 of the wear-resistant liner 30, and 46 indicates a burr at the joint of the fitting 38 caused by the friction welding. The plane portion of the recess 36 is pressed against a burr 46 having a size determined by the bonding conditions with a sufficient margin. Thus, the fitting 38 of the wear liner 30
is securely inserted into the hole 42 of the mounting plate 40. 32
3 shows the use surface of the wear-resistant liner 30, which is used as ore, coal, etc. collide with or slide on the use surface 32, and wear gradually progresses.

[Problems to be solved by the invention] However, the conventional wear-resistant liner 30 described above
In this case, since it is manufactured by casting, a mold is required, and in particular, when forming the recess 36 on the mounting surface 34 side, not only does it require a lot of labor for the molding, but also friction welding is performed in the recess 36. If the fitting conditions are not appropriate, the burr may have different dimensions, resulting in a decrease in joint strength.
There was a problem that it could not maintain sufficient strength and was easily damaged when subjected to external loads.

The present invention solves these conventional problems by using a continuous casting method to cast flat liners with the same cross-sectional shape using a mold, thereby reducing the labor required for molding. The purpose of the present invention is to provide an excellent wear-resistant liner that can significantly reduce the wear resistance and maintain sufficient strength by friction welding the cross section of the recess filled with burrs. It is something.

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a flat liner having a cross-sectional shape consisting of a certain recess on the back surface, and a fitting that is friction-welded to the recess. It is something.

[Function] The present invention has the following effects due to the above configuration. That is, the planar liner has the same cross-sectional shape with a certain concave portion on the back surface, and since a continuous casting method can be adopted for casting, the labor for molding can be significantly reduced.

In addition, the fitting conditions can be appropriately selected so that the fitting is friction welded to the cross section of the recess on the back side and the burr of the fitting fills the cross section of the recess. At the same time, sufficient strength can be maintained and damage can be avoided.

[Embodiment] Figures 1 to 3 show the configuration of an embodiment of the present invention.

In FIGS. 1 and 2, numeral 10 denotes a liner, which has a flat plate shape and is made of high chromium cast iron. 12 is the use surface of the liner 10, 14
indicates the back side of the liner 10, and 16 indicates the back side 14.
It is a recess provided in the back surface 16, and is formed in a continuous groove shape along the back surface 16. The liner having the cross-sectional shape shown in FIG. 2 is continuously cast into the shape of a mold using a continuous casting method, and then processed to the required length to produce a flat liner. Reference numeral 18 denotes a fixture, which is made of carbon steel. Recess 1 on back surface 14 of liner 10
A fitting 18 is friction welded to a part of 6,
Reference numeral 19 indicates a burr at the joint of the fixture 18 caused by friction welding. The outer diameter and thickness of the burr 19 are controlled by the bonding conditions between the liner 10 and the fixture 18, and the recess 16 is filled with the burr 19 having dimensions determined by the bonding conditions.

Thus, as shown in Figure 3, liner 1
The fitting 18 of No. 0 is securely inserted into the hole 22 of the mounting plate 20. If the above bonding conditions are not appropriate, cracks in the liner 10 and excessive or insufficient burrs 19 will occur, and the strength of the joint will decrease, so the bonding is performed under appropriate bonding conditions. In particular, by reliably filling the recess 16 with the burr 19, high joint strength can be obtained, and when the fixture 18 is subjected to an external load, it can maintain sufficient strength and prevent breakage. It is possible to eliminate problems that may cause damage such as. Next, even if wear progresses on the use surface 12 of the liner 10, the fitting 18 remains connected to the liner 10 without coming off.

Thus, according to the above embodiment, the liner 1
0 can be manufactured by adopting a continuous casting method using a mold, so the labor for molding can be significantly reduced.Furthermore, the fitting 18 is friction welded with the cross section of the recessed part of the liner 10 reliably filled with burrs. By doing so, sufficient strength can be maintained and damage such as breakage can be avoided, and the durability of the wear-resistant liner can be significantly improved.

It goes without saying that the aspects of the present invention are not limited to the above-mentioned embodiments, and many other aspects such as the cross-sectional shape of the recess and the structure of the joint can be adopted.

[Effects of the invention] As is clear from the above embodiments, the present invention allows the mounting tool of the wear-resistant liner to be securely inserted into the mounting hole, and even if the wear surface of the wear-resistant liner progresses, The attachment between the wear-resistant liner and the mounting plate can be ensured, and the labor and cost for manufacturing the liner can be significantly reduced. Furthermore, the mounting tool can be easily damaged when subjected to external loads. As a result, the durability of the wear-resistant liner can be significantly improved.

[Brief explanation of drawings]

Fig. 1 is a front view of a wear-resistant liner according to an embodiment of the present invention, Fig. 2 is a side sectional view of the same, Fig. 3 is a side sectional view showing the same installed state, and Fig. 4 is a conventional wear-resistant liner. FIG. 5 is a front view of the wear liner, and FIG. 5 is a side sectional view showing the attached state. 10...Liner, 14...Back surface, 16...Recess, 18...Mounting tool.

Claims (1)

[Scope of utility model registration request] 1. A wear-resistant liner comprising: a flat liner having a cross-sectional shape consisting of a constant recess on the back surface; and a fitting that is frictionally welded to the recess.