JPS5843649B2 - Crater device for melt cutting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention aims to obtain a solvent surface free from adhesion of fins in an arbitrarily selected solvent in a solvent nozzle composed of an upper nozzle and a lower nozzle attached to a main body block. Regarding the solvent nozzle device that has been made possible, more specifically, in a solvent nozzle that combines two or more solvent nozzles, gas nozzles for preventing fin generation are installed on both sides of the solvent oxygen nozzle, and fins are attached. This invention relates to a solvent nozzle device that makes it possible to obtain a wide solvent surface that does not overwhelm.

When a conventional solvent tip is used to partially apply solvent to the surface of a steel material, fins b are formed on both sides of the solvent surface a, as shown in Figure 1, and if rolled with the fins b attached, the steel material will be scratched. Therefore, it is necessary to remove the fin b in a separate process, which increases the work process and costs.

Therefore, in order to improve this drawback, the present applicant also developed a solvent method and a solvent vent that remove or prevent the fins at the same time as the solvent, and filed applications such as Utility Model Application No. 17533 and Japanese Patent Application No. 75602. However, the former has the disadvantage that it does not have a sufficient fin adhesion prevention function and cannot remove the fins from hot steel, and the latter also It was possible to suppress and prevent the formation of fins by ejecting a fin-preventing gas into the part, but since the solvent nozzle is an integral structure, only the specified solvent can be obtained, and if a wide solvent is desired, the nozzle device becomes large. The disadvantages were that it was expensive and difficult to handle.

In view of these drawbacks, the present invention is directed to a completely new technique which makes it possible to obtain a wide solvent surface without adhesion of fins using a conventional solvent nozzle.

To specifically explain one embodiment of the present invention with reference to the drawings, the second embodiment
6 to 6, this solvent nozzle has an upper nozzle 2 and a lower nozzle 3 attached to a main body block 1, as shown in FIGS. 3 and 4.

It is made up of a combination of three solvent vents.

Each main body block has a hole 4 for a solvent oxygen chamber (described later) and a hole 5 for a gas chamber for preventing generation of solvent oxygen or fins (described later) at predetermined positions. The structure is such that solvent oxygen and fin generation prevention gas can be supplied from the upper surface of the block 1.

The main body block 1 also receives preheated oxygen and fuel gas supplied from respective piping (not shown) through the upper and lower craters 2a.
, 3a, 2b, 3b and 2c.

A passage and a chamber (not shown) are bored so that the 3C preheating hole 6 can also be ejected.

Further, partition chamber pipes I for solvent oxygen are inserted and fixed into the left and right sides of the hole 4 penetrating the main body block 1, respectively, and the space formed by the left and right partition chamber pipes I is also treated as one room and is used as a solvent oxygen chamber 8aj8bj8e.
It consists of

In addition, a partition rod 9 for solvent oxygen or a gas for preventing fin generation, which has three partition plates in the middle, is inserted into the hole 5, and the partition rod 9 is fixed to a lid 10 screwed on the left and right sides by screws 1. Forming a chamber 11°12.13.14,
Furthermore, each chamber 11.12, 13.14 is sealed with an O-ring d to prevent fluid leakage.

Furthermore, the chambers 11, 12, 13, 14 are connected to the side wall 16 of the lower crater, the boundary plate 17 and the upper and lower craters 2 via respective pipe passages 15 passing through the solvent oxygen chamber pipe T.
, 3 or the space formed by both boundary plates 1T and the upper and lower craters 2, 3, ie, the solvent oxygen or fin generation prevention gas jet ports 1B, 19, 20, and 21 are communicated with each other.

Further, the chambers 9a, 8b, 8c also eject the solvent oxygen supplied from the passages 22a, 22b, 22c of the main body block 1 from the solvent oxygen ejection ports 23a, 23b, 23c sandwiched between the ejection ports 18.19, 20.21. spout 2 to get
3a, 23b, and 23c via passages 24a, 24b, and 24c.

Also, 25.26, 27.28 are chamber 11.12,
13 and 14, respectively, are passages bored in the main body block 1.

The present invention actively utilizes the fact that the solvent performance decreases as the oxygen purity decreases, as described in the above-mentioned Japanese Patent Application No. 52-75602. This method forcibly lowers the oxygen purity near the boundaries of each fluid jet flow, suppresses and prevents the formation of fins when using solvents, makes it possible to obtain a solvent surface that does not allow fins to adhere, and allows multiple craters to be created. By combining and bonding in the width direction of the solvent, it is possible to selectively use a solvent in a wide solvent.

The operation and usage example of the present invention will be explained with reference to FIGS. 3 to 6.

First, if you are using only the solvent outlet A in Figures 3 and 4 to use the solvent, turn the solvent medium selector switch (not shown) to (1).
When crater A is selected, a control device for the electromagnetic switching valve is configured using a combination of a normal select switch and a relay circuit, or a sequencer such as a pin board, drum type, or other electronic circuit, and the control device controls the electromagnetic switching valve 29 and 31 is excited and activated, and a gas for preventing fin generation using nonflammable gas or air is supplied to the chambers 11 and 12 through passages 25 and 26 of the main block, and the chambers 11 and 12 are also injected through the pipe passages 15 of each. Exit 18
The gas for preventing fin generation is ejected from 19 and 19.

Subsequently, when the electromagnetic switching valve 30a is operated, the solvent oxygen enters the chamber 8a through the passage 22a and further flows into the passage 24a.
Since the solvent oxygen is ejected from the solvent oxygen ejection port 23a, nonflammable gas or air jets are formed from the ejection ports 18 and 19 on both sides of the solvent oxygen ejection flow from the solvent oxygen ejection port 23a. By lowering the oxygen purity on both sides of the jet stream, it is possible to obtain a solvent surface free from the adhesion of fins due to the crater A.

Next, when using a wide solvent using craters A and B, when the above-mentioned solvent medium selector switch is selected to (2) craters A-B, the electromagnetic switching valve 31 in the case of (1) returns to demagnetization and instead Since the electromagnetic switching valve 34 is excited, the fin generation prevention gas is supplied from the passages 25 and 27 of the main body block 1 and is ejected from the ejection ports 18 and 20.

Also, since the electromagnetic switching valves 32 and 33 are excited, (
Solvent oxygen is ejected from the ejection port 19 from which the fin generation prevention gas was ejected in step 1) in conjunction with the solvent oxygen ejected from the ejection ports 23a and 23b by the excitation operation of the electromagnetic switching valves 30a and 30b.

Therefore, using the craters A and B, it is possible to obtain a solvent surface with a wide width to which fins do not adhere.

Furthermore, when using the solvent at the gold mines at craters A, B, and C, select the solvent medium selector switch to (3) craters A-B-C, and the electromagnetic switching valves 29, 30a are activated in the same manner.

30b, 30c, 32, 33, 35, 36, and 37 are excited, so the gas for preventing fin generation is ejected from the ejection ports 18 and 21 at both ends of the crater, and the gas for preventing fin generation is ejected from the ejection ports 18 and 21 on the inside between the ejection ports 18 and 21. Exits 23a, 23b, 23c
, 19 and 20 eject solvent oxygen, and the crater A,
Using B and C, it is possible to obtain a solvent surface to which a wide fin does not adhere.

The excitation combination of each solenoid valve is determined by selecting the solvent nozzle used.
As shown in the figure, the ○ mark indicates the operating status of each electromagnetic switching valve for solvent oxygen injection and the mark indicates the fin generation prevention gas injection.As can be seen from the figure, both ends of the solvent oxygen injection pressure are always used for fin generation prevention. It also indicates that gas is supplied.

In the above usage example, the combinations of solvent nozzles are sequentially A, AB, A-B, and C. However, by changing the electromagnetic switching valve control device, the combinations of solvent nozzles can be changed to B, C, B-c, and A as necessary. -C can also be used selectively.

Furthermore, as shown in FIG. By sequentially adding additional solvents to the portions of the solvent nozzle B sandwiched between the solvent nozzles A and C, it is possible to simultaneously obtain a solvent surface with no fins adhering to a wide width or a selected combination of several types of solvents.

The gas for preventing fin generation, such as nonflammable gas or air, used in the present invention is ejected at a flow rate (pressure) of i, o ~ 4.8 times the ejection pressure of solvent oxygen, or for preventing fin generation on both sides of the crater. By tilting the jet port capable of spouting gas by 0 to 5 degrees toward the solvent oxygen jet port side, it is possible to increase the effect of suppressing and preventing the gain generated when using the solvent.

Further, by jetting out a gas for preventing fin generation prior to jetting out the solvent oxygen, it is also possible to prevent the generation of fins that occur in large quantities when the solvent is started.

As described above, the device according to the present invention arranges a combination of solvent oxygen jet ports and fin generation prevention gas jet ports at intervals of a certain width, so as to reduce the oxygen purity on both sides of the oxygen jet flow in a given solvent. As a result, it is possible to obtain a solvent surface to which fins do not adhere in arbitrarily selected solvents, and there is no need for subsequent fin removal work.The structure is simple, there are fewer breakdowns, and it is superior in handling and workability, compared to conventional solvents. It has features such as being able to improve the solvent nozzle.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a conventional solvent material, Fig. 2 is a side view of the device according to the present invention, Fig. 3 is a XX sectional view of Fig. 2, and Fig. 4 is a simplified front view of the upper and lower craters. , Fig. 5 is a fluid control system diagram, Fig. 6 is a diagram showing an example of the operating state of the electromagnetic switching valve shown in Fig. 5, and Fig. 7 a and b show the installation state of the side plate attached to the lower crater. FIG. A, B, C: Crater, 1: Main block, 2: Upper crater,
3: Lower crater, 4, 5: Hole, 6: Preheating hole, 7: Chamber pipe, 9a, 8b, 8c: Solvent oxygen chamber, 9
: Partition rod, 102 lids, 11° 12.13, 14: Chamber 15: Pipe passage, 16: Side wall, 17: Boundary plate, 18, 19° 20.21.23a, 23b, 23c:
Spout ports, 22a-, 22b, 22c, 24a, 24b,
24c. 25.26, 27, 28: Passage, 29.30a. 30b, 30c, 31.32, 33, 34, 35°36
．． 37: Solenoid switching valve.

Claims (1)

[Claims] 1 A plurality of solvent oxygen vents formed by drilling two chamber holes are connected by communicating the chamber holes, and a partition rod and a chamber pipe capable of forming a plurality of chambers are inserted and fixed into the respective chamber holes. , and communicates the chamber with a plurality of jetting ports capable of spouting solvent oxygen or fin generation prevention gas through passages, and further connects the chamber and a supply source of solvent oxygen or fin generation prevention gas to each chamber. The electromagnetic switching valves are connected to each other through the corresponding plurality of passages and the electromagnetic switching valves, and the fin generation prevention gas is spouted from both sides of the arbitrarily selected solvent oxygen jet stream of the plurality of solvent vents. A solvent crater device equipped with a control device that controls its operation.