JP3030696B2 - Lance pipe - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for supplying oxygen from a base pipe into a metal pipe (for example, a steel pipe), burning the pipe tip, and appropriately using the heat of oxidation or redox reaction. The present invention relates to a lance pipe capable of cutting a workpiece.

[0002]

2. Description of the Related Art Conventionally, in a lance pipe of this type, for example, a metal wire or a pipe material is appropriately provided inside one end of a steel pipe so as to extend from one end to the other end. Those with enhanced capabilities are commonly used.

[0003]

In the above-mentioned lance pipe having a high cutting ability per unit length, the amount of melting of the lance pipe itself per unit time during drilling operation is increased. When drilling work is performed to a certain extent, such as when drilling is performed substantially horizontally on the workpiece, the lance pipe itself is removed from the slight gap created between the inner wall surface of the workpiece and the outer peripheral surface of the lance pipe. There were difficulties in that the molten material and the material to be drilled at the perforated portion were difficult to be discharged to the outside smoothly. For this reason, once this lance pipe is taken out from the perforated part, a single pipe-shaped lance pipe is inserted into this perforated part, and the lance pipe itself is melted,
The drilling operation is continued while discharging the material to be drilled in the drilled portion. However, since the drilling operation is temporarily interrupted, the drilled portion cools down, and the drilling operation is started again by re-heating the drilled portion.
There was a disadvantage that the work efficiency was poor.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention has been created to solve the above-mentioned difficulties and the like, and to provide a lance pipe which is easy to handle and excellent in work efficiency.
In the lance pipe S according to the first aspect, oxygen is supplied from the base end into the metal pipe as appropriate, and the tip end of the metal pipe is appropriately burned. A lance pipe S capable of being subjected to abrasion of an abraded material, wherein a suitable metal combustion consumable base pipe A having an outer surface or an inner and outer surface subjected to a heat-resistant treatment.
The combustion consumable base tube A is provided with a metal consumable filler B as appropriate at the end of the combustion consumable base tube A.
A means for forming a large diameter portion 1 at the distal end portion and a small diameter portion 2 at the other portion is adopted.

Further, in the lance pipe S according to the second aspect, oxygen is supplied from the base end of the metal pipe as appropriate, and the tip end of the metal pipe burns the end of the metal pipe as appropriate. A lance pipe S which is capable of appropriately cutting an object to be cut by heat, and forming an appropriate metal combustion consumable base tube A having an outer surface or an inner and outer surface subjected to heat resistance treatment, The combustion consumable filler B made of metal is appropriately installed in the combustion consumable base A, and the filling amount of the combustion consumable filler B at the distal end of the combustion consumable base A is larger than that of the other parts. The means to do it were adopted.

Further, in the lance pipe S according to the third aspect, a means is adopted in which the leading end portion of the combustion consumable base tube A is a large diameter portion 1 and the other portion is a small diameter portion 2.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to illustrated examples. In the figure, S has its base end connected to a pipe holder, and oxygen in an oxygen cylinder connected to the pipe holder via a hose or the like is supplied from the base end to the end, and the end is This shows a lance pipe of the present invention in which a material to be burned is burnt and the object to be cut is appropriately ground by the heat of oxidation reaction or heat of oxidation-reduction reaction, and the lance pipe S has an outer surface or an inner or outer surface thereof. A combustion consumable base tube A made of a suitable metal and substantially round pipe having been subjected to a suitable heat resistance treatment is formed, and a suitable combustion consumable filler B made of a metal is provided inside the front end portion of the combustion consumable base tube A. (See FIGS. 1 and 2).

The combustion consumable base pipe A has a length of, for example, 3
A steel pipe of about m to 5.5 m is used, and the outer surface or the inner and outer surfaces thereof are subjected to a heat treatment such as a calorizing process. The specific dimensions, material, and the like of the combustion consumable base tube A can be appropriately set according to the purpose of use of the lance pipe S, the dimensions, the material, and the like of the workpiece.

For example, the combustion consumable filler B is formed to have a length of about 1 m, and a metal tube, a metal bar, or a combination of a metal tube and a metal bar is used.
While being arranged along the inner peripheral surface of the combustion consumable base pipe A,
It is installed so that it does not rattle in the combustion consumable base pipe A. In particular, as the combustion consumable filler B, for example, a non-ferrous metal material such as aluminum or the like can be partially or entirely used. The specific dimensions and materials of the combustion consumable filler B, the interior state and the combined state of the combustion consumable base pipe A, etc. are determined according to the purpose of use of the lance pipe S, the dimensions of the workpiece, It can be set as appropriate depending on the material and the like.

In another lance pipe S of the present invention, a combustion consumable filler B is provided in the combustion consumable base pipe A so as to extend from a base end to a tip end of the combustion consumable base pipe A. The configuration is such that the filling amount of the combustion consumable filler B in the distal end portion of the base pipe A is larger than in other portions (not shown).

Further, another lance pipe S of the present invention has a large diameter portion 1 at the distal end of the combustion consumable base tube A and a small diameter portion 2 at the other portion (see FIG. 3). .

Incidentally, a specific configuration of the lance pipe S,
Shape, size, material, specific configuration, shape, dimensions, material of combustion consumable base tube A, specific heat-resistant treatment means on outer surface or inner and outer surface of combustion consumable base tube A, specific configuration, shape of combustion consumable filler B The size, material, number, arrangement state, specific configuration, shape, dimensions of the large-diameter portion 1 and specific configuration, shape, dimensions, etc. of the small-diameter portion 2 are not limited to those shown in the drawings, but may be freely set as appropriate. Can be set to

The lance pipe S of the present invention is configured as described above. Next, a description will be given of a usage example. First, a base end portion of the lance pipe S is mounted on a pipe holder, and oxygen from an oxygen cylinder is removed. It is supplied into the pipe holder, passed through the lance pipe S, and ejected from the tip. Then, the tip portion of the lance pipe S is ignited and burned, and a desired position of the workpiece is pierced by the combustion of the lance pipe S (heat of oxidation reaction or oxidation-reduction reaction by oxygen). Then, the combustion consumable filler B (or, alternatively, the combustion consumable base tube A is provided inside the front end of the combustion consumable base tube A).
Until the portion of the combustion consumable base pipe A where the filling amount of the combustion consumable filler B is increased) is consumed, the perforated amount of the work per unit time increases, and the work Drill to a certain depth. On the other hand, when the tip of the combustion consumable base pipe A becomes worn other than the curved portion (when the perforated portion becomes deep to some extent), the amount of melting of the lance pipe S itself decreases, and the lance pipe S itself melts, The machined material in the cut portion is smoothly discharged to the outside of the drilled portion, and the work of drilling the machined material is continued.

Further, as shown in FIG. 3, another lance pipe S of the present invention comprises a combustion consumable filler B (or a combustion consumable material) which is provided inside the large diameter portion 1 at the distal end of the combustion consumable base pipe A. Until the portion of the large diameter portion 1 of the base pipe A where the amount of the burnable consumable filler B is increased) is consumed, the amount of perforation of the workpiece per unit time increases, and the workpiece is deepened to some extent. Drill until it is no longer needed. On the other hand, when the small-diameter portion 2 other than the large-diameter portion 1 of the combustion consumable base pipe A is consumed (when the perforated portion is deepened to some extent), the amount of melting of the lance pipe S itself decreases, and the lance pipe S is cut. Inner wall of perforated object and combustion consumable base pipe A
The gap formed between the outer peripheral surface and the lance pipe S itself becomes large, and the melted material of the lance pipe S itself and the workpiece to be drilled at the drilled portion are smoothly discharged to the outside of the drilled portion,
The drilling work of the workpiece is continued.

[0015]

Therefore, the lance pipe S according to claim 1
The oxygen is supplied from the base end into the metal pipe as appropriate, the tip end of the metal pipe is appropriately burned, and the heat of oxidation reaction or heat of oxidation-reduction reaction allows the object to be machined to be appropriately ground. In the lance pipe S, an outer surface or an inner or outer surface of which is formed with a suitable metal combustion consumable base pipe A having been subjected to heat resistance treatment, and the metal end of the combustion consumable base pipe A is appropriately formed of metal. The combustion consumable filler B is installed,
Since the leading end portion of the combustion consumable base tube A is the large diameter portion 1 and the other portion is the small diameter portion 2, the burning consumable filler B inside the leading end portion of the combustion consumable base tube A is consumed. Until
It is possible to increase the amount of drilling of the workpiece per unit time, and the work of drilling the workpiece to a certain depth can be completed in a short time. Then, when the portion other than the end portion of the combustion consumable base pipe A becomes worn, the amount of melting of the lance pipe S itself decreases, and the lance pipe S itself melts and the material to be cut in the perforated portion is reduced. Can be smoothly discharged to the outside of the perforated portion. In addition, when the small-diameter portion 2 of the combustion consumable base pipe A becomes worn (when the perforated portion becomes deep to some extent), the inner wall surface of the perforated hole of the workpiece and the combustion consumable base pipe A
The gap formed between the outer peripheral surface and the outer peripheral surface is increased, so that the molten lance pipe S itself and the workpiece to be drilled can be smoothly discharged to the outside of the drilled portion. In addition, the piercing operation of the workpiece can be continued without interruption, and the lance pipe S is easy to handle and has excellent work efficiency. Furthermore, since the outer surface or the inner surface and the outer surface are appropriately formed of a metal-made combustion consumable base tube A that has been subjected to a heat-resistant treatment, the combustion consumable base tube A has excellent heat resistance.
The combustion-consumable base pipe A does not melt out of the way.

Further, the lance pipe S according to claim 2 is
A lance pipe that appropriately supplies oxygen from the base end into the metal pipe, burns the end of the metal pipe as appropriate, and heats the object to be cut by the heat of oxidation or redox reaction. S, a metal-made combustion consumable base pipe A having an outer surface or an inner and outer surface subjected to a heat-resistant treatment is formed, and a metal-made combustion consumable filler B is appropriately contained in the combustion consumable base pipe A. Since the amount of the combustion consumable filler B at the tip of the combustion consumable base pipe A is larger than that of the other parts, the combustion consumable filler at the tip of the combustion consumable base A is increased. Until the part where the filling amount of B is increased is consumed, it is possible to increase the drilling amount of the workpiece per unit time, so that the work of drilling the workpiece to a certain depth can be completed in a short time. Become. Then, when the portion other than the tip of the combustion consumable base pipe A becomes worn,
The amount of melting of the lance pipe S itself decreases, and the lance pipe S
It is possible to smoothly discharge the melted material and the material to be cut in the perforated portion to the outside of the perforated portion. In addition, the piercing operation of the workpiece can be continued without interruption, and the lance pipe S is easy to handle and has excellent work efficiency. Furthermore, since the outer surface or the inner surface and the outer surface are appropriately formed of a metal-made combustion consumable base tube A that has been subjected to a heat-resistant treatment, the combustion consumable base tube A has excellent heat resistance.
The combustion-consumable base pipe A does not melt out of the way.

The lance pipe S according to claim 3
Is that the leading end portion of the combustion consumable base pipe A is a large diameter portion 1 and the other portion is a small diameter portion 2. Therefore, when the small diameter portion 2 of the combustion consumable base tube A becomes worn (the perforated portion is somewhat reduced). When it becomes deeper, the gap formed between the inner wall surface of the drilled material and the outer peripheral surface of the combustion consumable base pipe A becomes larger, and the lance pipe S itself melts or the drilled portion of the workpiece is removed. It becomes possible to discharge smoothly to the outside of the perforated portion. In addition, the piercing operation of the workpiece can be continued without interruption, and the lance pipe S is easy to handle and has excellent work efficiency.

[Brief description of the drawings]

FIG. 1 is a partially cut-away perspective view illustrating a lance pipe of the present invention, which is partially omitted.

FIG. 2 is a partially omitted sectional view showing an example of use of the lance pipe of the present invention.

FIG. 3 is a partially omitted cross-sectional view of a lance pipe according to another embodiment of the present invention.

[Explanation of symbols]

S Lance pipe A Combustion consumable base tube B Combustion consumable filler 1 Large diameter part 2 Small diameter part

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F23D 14/52 B23K 7/10

Claims (3)

(57) [Claims] Claims: 1. An oxygen is supplied from a base end into a metal pipe as appropriate, and a tip of the metal pipe burns the root as appropriate, and the object to be cut is appropriately ground by heat of oxidation reaction or oxidation-reduction reaction. Lance pipe,
An outer surface or an inner or outer surface of which a heat-resistant treatment is applied to form an appropriate metal combustion consumable base tube, and a metal combustion consumable filler material is appropriately provided at the tip end of the combustion consumable base tube, and the combustion is performed. Make the tip of the consumable base tube a large diameter part, and
A lance pipe characterized by a small diameter portion . 2. The oxygen is supplied from the base end into the metal pipe as appropriate, the tip end of the metal pipe is burned as appropriate, and the object to be cut is appropriately ground by the heat of oxidation reaction or oxidation-reduction reaction. Lance pipe,
An appropriate metal combustion consumable base tube having a heat-resistant treatment on its outer surface or inner and outer surfaces is formed, and a suitable metal combustion consumable filler is provided inside the combustion consumable base tube. A lance pipe characterized in that the filling amount of the combustion consumable filler material at the tip end portion is larger than at other portions. 3. The combustion exhaust base pipe has a large diameter portion at the tip end and a small diameter portion at the other portion.
Lance pipe as described.