KR100418119B1 - High performance materials cored plasma cutting torch tip - Google Patents

Abstract

The present invention relates to a plasma cutter torch tip in which a durable core is inserted. The object of the present invention is to insert a hole having a high temperature abrasion resistance and good conductivity in a hole of a tip (nozzle), which is a problem caused by severe wear during continuous cutting. The method is to provide a tip that improves durability without any problem in function and effect as a cutter torch.

The configuration of the present invention comprises an electrode 3 inserted into the torch 4, a tip 2 fitted to the front of the electrode, and a shield cup 1 protecting the tip. In the plasma cutting machine torch composed of

It is a summary of the present invention that the high temperature durable core 5 is inserted into the plasma cutter torch tip front hole.

Description

High performance materials cored plasma cutting torch tip

The present invention relates to a plasma cutter torch tip with a durable core inserted.

In general, a plasma cutting machine is used to precisely cut a thick steel plate into various shapes. Referring to a functional part of the plasma cutting machine torch, as shown in FIG. 1, a shield cup 1, an electrode 3, and a tip (nozzle) 2 are used. And a torch 4, and plasma heat is supplied through the hole of the tip (nozzle) 2.

Until now, the tip (nozzle) has been used so far as copper and copper (Cu) having good thermal and electrical conductivity. However, a chromium copper (CuCr) alloy having a high degree of hardness is used.

On the other hand, among the problems faced by the current plasma cutter torch, there are many defects caused by unstable cutting of the cutting object due to severe wear of the tip (nozzle) hole, which is a passage through which strong plasma heat is supplied.

In order to prevent this, the tip (nozzle) must be replaced frequently, which leads to a cost increase of the cutting cost due to a delay in cutting time and a large amount of nozzles.

As an example, although the difference is large depending on the current applied, the tip (nozzle) has to be changed from three to five or more while using one electrode of the plasma torch under a general rated current. It is a big obstacle.

As a countermeasure against this, chromium copper alloy, which is a material having high strength and hardness, has been used, but it has no significant effect on durability compared to the price.

An object of the present invention for solving the above problems is a cutter torch by inserting a material having a high temperature abrasion resistance and good conductivity to the hole of the tip (nozzle), which is a problem due to abrasion during continuous cutting Its function and effect is to provide a tip that improves durability without any problem.

1 is a schematic diagram of a configuration of a general plasma cutter torch,

Figure 2 is a cross-sectional view showing the mounting of the plasma cutting machine torch tip (nozzle) in which the durable core is inserted.

<Description of the symbols for the main parts of the drawings>

(1): Shield Cup

(2): Tip or nozzle

(3): Electrode

(4): Torch

(5): Core

The present invention, which achieves the object as described above and solves the conventional drawbacks, includes an electrode (Electrode) 3 inserted into the torch 4 and a tip fitted to the front of the electrode. (2) and a plasma cutter torch composed of a shield cup (Shield Cup) 1 protecting the tip,

And a high temperature durable core inserted into the tip front hole of the plasma cutter torch.

The material of the high temperature durable core is tungsten copper, tungsten is made of one material selected from the group consisting of heat-resistant alloys and heat-resistant steels which are plated with copper or silver to improve conductivity. The material used here uses common alloys and materials.

The core inserted into the tip front hole for the torch may be brazed or inclined to the joint by using one selected from among the core processed to have a lower cross section, a upper cross section, or an inclined cross section. Insert it.

Hereinafter, the configuration and the operation of the embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 shows a structure of a general plasma cutting torch, which includes an electrode 3 inserted into a torch 4 and a tip (or nozzle) fitted to a front of the electrode ( 2) and Shield Cup (1) to protect this tip,

Figure 2 is a view of inserting the durable core of the present invention in various shapes, the insertion method of 1) a method of driving from the top of the hole (tip) with a jaw core made of durable material, and 2) the tip (nozzle) Combine the hole with the jaw core made of durable material, and 3) the inside of the tip (nozzle) with the inclined core made of durable material.

Hereinafter is a preferred embodiment of the present invention.

(Example)

The entire body of the tip (nozzle) is made of conventional pure copper, and then the hole of the tip (nozzle) is inserted with a core (5) made of durable material, and during continuous cutting, the core is swelled due to expansion due to plasma heat or heat pressure. Joining is done by brazing or the like so as not to fall out.

The service life of the nozzles manufactured in this way was greatly improved compared to conventional copper or chrome copper alloy nozzles. It is a numerical value that shows the capacity of the cutter. It was possible to use up to 100 amper as a tip (nozzle) for 80 amper. The tip (nozzle) was able to extend the service life of more than 100 minutes compared to using 30 minutes, and the results of the continuous cutting experiment are shown in Table 1 below.

Table 1. Usage time of tip (nozzle) by continuous cutting

division Body material Core material Hardness (Hv) Amp Hours of use (minutes) Existing-1 Pure copper Pure copper 123 100 25-30 Existing-2 Pure copper Chrome copper 154 100 35-50 Invention-1 Pure copper Tungsten copper 215 120 120-150 Invention-2 Pure copper Tungsten silver 196 120 100-150

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

The service life of the tip (nozzle) of the present invention as described above is greatly improved compared to the conventional pure copper or chromium copper alloy nozzles, and the value indicating the capacity of the cutter was available as a nozzle for 80 amper up to 120 amper, Compared to 30 minutes of pure copper nozzles, the service life of the copper nozzle can be improved by more than 100 minutes.

Claims (3)

In the plasma cutter torch comprising an electrode 3 inserted into the torch 4, a tip 2 fitted to the front of the electrode, and a shield cup 1 protecting the tip, By inserting a high temperature durable core (5) in the tip front hole for the plasma cutter torch, The material of the high temperature durable core is tungsten copper, tungsten is composed of one material selected from the group consisting of a heat-resistant alloy and heat-resistant steel plated copper or silver to improve the conductivity, The coupling structure of the core inserted into the tip front hole for the torch may be brazed with a tip hole portion processed surface that has been processed to have a lower jaw cross section or an upper jaw cross section, or a slanted cross section. A plasma cutter torch tip having a durable core inserted therein, wherein the core processed to have the core is configured to be selected from among the structures inserted into the corresponding tip hole joints. delete delete