CN102699544B - Cutting system accomplishing cutting by using underwater manual rapid cutting material - Google Patents
Cutting system accomplishing cutting by using underwater manual rapid cutting material Download PDFInfo
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Abstract
The invention relates to a cutting system accomplishing the cutting by using an underwater manual rapid cutting material. The cutting system comprises three parts, namely an arc strike system, a gas supply system and a cutting gun, wherein the arc strike system is composed of a knife switch (5), an arc strike power supply (6) not higher than 36V, a lead (7) and a copper arc strike plate (8); the gas supply system is composed of an industrial oxygen cylinder (9) and an oxygen circuit (13) and used for supplying oxygen for the cutting gun (12), maintaining the further continuous combustion of the cutting material (11) and cleaning the melting slag of a cutting workpiece (10); the cutting gun (12) is connected with the industrial oxygen cylinder (9) through the oxygen circuit (13) and is connected with the arc strike power supply (6) through the lead (7). The system is used for the rapid cutting, assembling and disassembling of underwater steel structures and reinforced concrete; the gas and the power supply do not need to be cut; and the material is high in cutting efficiency, wide in cutting object range, convenient and safe to carry over, simple to operate and low in cost.
Description
Technical field
The invention belongs to the metal material cutting technique field for manual fly-cutting under water, relate to a kind of manual fast cutting material and preparation method thereof under water.
Background technology
21 century is century of ocean, and along with the exploitation of ocean, a large amount of off-shore structures is built, and meanwhile, the submerged structures such as a large amount of waste and old harbours, Discarded Drilling Materials platform also will be caused to need to be removed, and are navigation removing obstacles.And the difficult point of these submerged structure barrier-breakings is that underwater portion structure can only be removed under water, and these submerged structures have reinforced concrete structure, too increase the difficulty of dismounting.
Now, remove metal structure and reinforced concrete structure under water and mainly adopt subsea cutting technology, subsea cutting technology aerobic conventional at present-combustible gas cutting, under water oxygen-arc cutting, metal-electric arc cutting, submarine mechanical cutting, water jet cutting, underwater plasma cutting, blast cutting etc.Oxygen-combustible gas cutting is unwell to cutting corrosion resisting steel, stainless steel, cast iron and non-ferrous metal than titanium, oxygen under water-arc cutting, metal-electric arc cutting, submarine mechanical cutting, water jet cutting, underwater plasma cutting all need livewire work, there is potential safety hazard, and water jet cutting, equipment required for underwater plasma cutting are comparatively complicated, equipment manufacturing cost is expensive, huge not easily portable, and blast cutting danger is larger.
Patent application CN201010536018.5 discloses a kind of material for fast hand cutting, a kind of material for fast hand cutting, it is characterized in that: the hollow tubular structure be made up of incising pipes and the many inner cutting wire materials of outside, wherein said incising pipes is the steel pipe adopting Forging Technology to be prepared from, and the inside and outside electroplating technology that adopts of steel pipe is respectively coated with the thick copper plate of 0.1mm; Described cutting wire material length is identical with incising pipes, be made up of crust and powder core, described crust is mild steel 08F steel band, and its chemical composition is: by weight percentage, C 0.05% ~ 0.11%, Si≤0.03%, Mn 0.25% ~ 0.50%, P≤0.035%, S≤0.035%, Ni≤0.25%, Cr≤0.10%, all the other are iron and inevitable impurity; Described powder core by weight percentage, consists of CuO powder 2 ~ 8%, cerium 0.4 ~ 2%, and surplus is iron powder.Utility model patent CN201020597547.1 discloses a kind of Manual quick cutting system, but, the powder core component of this material for fast hand cutting and constituent content are only suitable for cutting in atmosphere, its heat release alloy CuO and Fe liberated heat that burns in oxygen is nowhere near and supports cutting material continual burning in water, thus cannot be met it cut under water, corresponding diced system also cannot meet the requirement of imderwater cutting simultaneously.
Therefore, need badly and produce on the basis of high-energy principle at research arc ignition heat release alloy material, exploitation is a kind of without the need to cutting combustion gas and cutting power supply, cutting speed is fast, safety, easy to carry, the simple to operate and imderwater cutting material that cost is low, for fly-cutting and the dismounting of underwater environment steel construction and armored concrete.
Summary of the invention
The present invention is directed to the defect of existing various subsea cutting technology, utilize the combustion characteristics of exothermic material in oxygen, there is provided a kind of without the need to cutting combustion gas and cutting power supply, cutting efficiency is high, cutting object scope is wide, easy to carry, safety, material for fast hand cutting and preparation method thereof under water that simple to operate and cost is low, for metal and armored concrete under water fly-cutting and crack.
Technical scheme of the present invention is: provide a kind of diced system utilizing material for fast hand cutting under water to complete cutting, this diced system comprises: arc ignition system, air supply system, cutting gun three part, is characterized in that:
Arc ignition system is not by knife switch, form higher than striking power supply, wire, the copper run-on tab of 36 volts, its effect to be ignited electric arc for material for fast hand cutting under water, just can disconnection valve knife-like switch after material for fast hand cutting smooth combustion under water, thus disconnect striking power supply;
Air supply system is made up of industrial oxygen cylinder and oxygen gas circuit, and its effect is for cutting gun provides oxygen, maintains the further sustained combustion of cutting material, and removes the slag of cut workpiece;
Cutting gun is connected with industrial oxygen cylinder by oxygen gas circuit, is connected with striking power supply by wire, and clamps cutting material and cut workpiece.
Further, before cutting, be connected various parts, striking two poles connects cutting gun and copper run-on tab respectively, and knife switch is in off-state, and striking power supply and industrial oxygen cylinder are in more than waterline all the time.
Further, the hollow tubular structure that described cutting material is made up of incising pipes and the many inner cutting wire materials of outside, has a layer insulating outside incising pipes; Described cutting wire material length is identical with incising pipes length, and be made up of crust and powder core, described crust comprises bi-material, one is mild steel 08F steel band, its chemical composition is: by weight percentage, C 0.05% ~ 0.11%, Si≤0.03%, Mn 0.25% ~ 0.50%, P≤0.035%, S≤0.035%, Ni≤0.25%, Cr≤0.10%, all the other are iron and inevitable impurity; Another kind of crust is aluminium strip, and the ratio of the cutting wire material of two kinds of different skin materials is 2: 1-6: 1, and described powder core by weight percentage, consists of Cu
2o powder 3 ~ 20%, CuO powder 5 ~ 25%, Al powder 2 ~ 10%, cerium 1 ~ 7%, surplus is Fe powder.
Further, a layer insulating is had outside described incising pipes; Outside incising pipes is formed by composite metal belt coiling, and realizes the flexible bending of incising pipes thus, and externally pipe material inner wall is uniform for described cutting wire material, and forms hollow structure in incising pipes center; Described cutting wire material is made up of crust and powder core, described crust is mild steel steel band, its chemical composition is: by weight percentage, C 0.05% ~ 0.11%, Si≤0.03%, Mn 0.25% ~ 0.50%, P≤0.035%, S≤0.035%, Ni≤0.25%, Cr≤0.10%, all the other are iron and inevitable impurity; Described powder core by weight percentage, consists of Cu
2o powder 3 ~ 20%, CuO powder 5 ~ 25%, Al powder 2 ~ 10%, cerium 1 ~ 7%, surplus is Fe powder.
Further, when carrying out imderwater cutting, cutting gun, workpiece, copper run-on tab are entirely below waterline, close knife switch, send oxygen by the oxygen flux control valve on cutting gun, contacted with copper run-on tab cutting material end and paddling, ignite electric arc, after arc burning is stable, cutting material end is moved on to workpiece place and cuts.
Further, mild steel 08F steel band is replaced with SPCC-SD type cold-rolled strip, and chemical composition is: by weight percentage, C≤0.15%, Mn≤0.60%, P≤0.1%, S≤0.025%, and all the other are iron and inevitable impurity.
The invention has the beneficial effects as follows:
1) portability, whole system mainly contains striking power supply, industrial oxygen cylinder, cutting gun etc., in cutting process, battery striking power supply, industrial oxygen cylinder are in more than the water surface, operating personnel only need to carry cutting gun and cutting material works under water, singlely just can to carry, complicated heavy equipment need not be needed as machine cuts, plasma cut etc.;
2) cutting power supply and cutting combustion gas is not needed, the cutting material that only needs to ignite under water just can disconnect striking power supply, by comburant oxygen effect, under utilizing self liberated heat held water of cutting material burning, the further sustained combustion of material for fast hand cutting is cut workpiece, does not need cutting power supply and cutting combustion gas;
3) security is high, and the method does not need cutting power supply in cutting process, and striking power supply used is also the battery of 24V, and can not work the mischief to operating personnel under water, security is high;
4) cutting efficiency is high, and material for fast hand cutting burning can reach the high temperature of more than 5000 DEG C, and cutting efficiency is 8 ~ 20 times of oxygen-fuel gas cutting, and have higher cutting speed, cutting efficiency is high.
5) cutting object scope is wide, material for fast hand cutting utilizes the liberated heat of material combustion own to support the further sustained combustion of cutting material under water, therefore, by the restriction of institute's cutting object material composition unlike oxy-acetylene flame, all metal materials can be cut, also can the nonmetallic materials such as Concrete Cutting, brick or rock, cutting object scope is wide.
6) cost is low, this under water material for fast hand cutting do not need complicated equipment, material composition used is mainly iron, and therefore, manufacturing cost is lower.
Accompanying drawing explanation
Accompanying drawing 1 is incising pipes is the schematic diagram of material for fast hand cutting under water that steel pipe is formed;
Accompanying drawing 2 is cross sectional representation of material for fast hand cutting under water;
Accompanying drawing 3 is schematic diagrames of Manual quick cutting system under water;
Accompanying drawing 4 is cross sectional representation of the material for fast hand cutting under water of specification 1;
Accompanying drawing 5 is cross sectional representation of the material for fast hand cutting under water of specification 2;
Accompanying drawing 6 is cross sectional representation of the material for fast hand cutting under water of specification 3.
The cross sectional representation of accompanying drawing 7 to be incising pipes be material for fast hand cutting under water that composite metal belt forms.
Wherein, 1-incising pipes; 2-cutting wire material; 3-silk material crust; 4-insulating barrier; 5-knife switch; 6-is not higher than the striking power supply of 36 volts; 7-wire; 8-copper run-on tab; 9-industrial oxygen cylinder; 10-cut workpiece; 11-is material for fast hand cutting under water; 12-cutting gun; 13-oxygen gas circuit;
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing 1-6, the invention will be further described:
One of the present invention material for fast hand cutting under water, this cutting material is made up of the incising pipes of outside and many cutting wire materials of inside, has a layer insulating outside incising pipes; Described cutting wire material length is identical with incising pipes length, cutting wire material is made up of crust and powder core, described crust comprises bi-material, a kind of crust is mild steel steel band, another kind of crust is aluminium strip, the ratio of the cutting wire material of two kinds of different skin materials is 2: 1 ~ 6: 1, and described powder core by weight percentage, consists of Cu
2o powder 3 ~ 20%, CuO powder 5 ~ 25%, Al powder 2 ~ 10%, cerium 1 ~ 7%, surplus is Fe powder.
Cu in cutting wire material in the present invention
2adding of O powder and CuO powder is to utilize Cu
2o powder and CuO powder and aluminium, iron react releases amount of heat, is supported in carrying out smoothly of imderwater cutting.Work as Cu
2o powder percentage by weight is less than 3%, CuO powder percentage by weight when being less than 5%, and liberated heat is few, and cutting speed is less, and works as Cu
2o powder percentage by weight is greater than 20%, CuO powder percentage by weight when being greater than 25%, and reaction is violent, and burning velocity is too fast, is not easy to control.Cu
2add while O powder and CuO powder can make course of reaction steadily, continue, imderwater cutting process is also more steady.Adding of Al powder is because aluminium and Cu
2amount of heat is released in O powder and the reaction of CuO powder, and its content range is by Cu
2the content of O powder and CuO powder determines.
Cerium add the efficiency of combustion that can improve cutting material, promote cutting material Thorough combustion in oxygen.When cerium percentage by weight is less than 1%, very little to the raising effect of efficiency of combustion, in 1 ~ 7% scope, along with the increase of cerium weight ratio, also increasing to the raising of efficiency of combustion, but more than 7%, change not quite compared with 7% to the raising of efficiency of combustion, and cerium price is higher, in order to cost-saving, elect 1 ~ 7% as.
In the preferred embodiment of the present invention, the composition of crust mild steel 08F steel band: by weight percentage, C0.05% ~ 0.11%, Si≤0.03%, Mn 0.25% ~ 0.50%, P≤0.035%, S≤0.035%, Ni≤0.25%, Cr≤0.10%, all the other are iron and inevitable impurity; Described powder core by weight percentage, consists of Cu
2o powder 3 ~ 20%, CuO powder 5 ~ 25%, Al powder 2 ~ 10%, cerium 1 ~ 7%, surplus is Fe powder.Another skin material is aluminium.
According to the different demands of engineer applied, the steel band of crust can also be SPCC-SD type cold-rolled strip, and chemical composition is: by weight percentage, C≤0.15%, Mn≤0.60%, P≤0.1%, S≤0.025%, and all the other are iron and inevitable impurity.
According to the different demands of engineer applied, crust can be partly steel crust, part is aluminium crust; Also can be all steel crust.
According to the different demands of engineer applied, the cutting material that specification is different can be processed, such as:
Specification 1: select wall thickness to be about the forging and stamping seamless steel pipe of 0.7mm, adopt electroplating technology again, within it outer both sides plate the copper plate of about thick 0.1mm, or prepare the composite pipe with copper-iron/copper three-decker, the upper and lower surface of the composite metal belt of described manufacture composite pipe adopts electroplating technology to be respectively coated with the thick copper plate of 0.1mm.
Prepare composite metal belt, Forging Technology can be adopted to be prepared into composite metal belt that thickness is the iron/copper-iron of 0.8mm, then carry out copper facing, copper facing flow process is acetone oil removing-washing-7% watery hydrochloric acid rust cleaning-washing-electronickelling bottoming-washing-copper facing-wash-dry up; Being wrapped in by composite metal belt on many cutting wire materials, being prepared into the cutting material with hollow structure, have a layer insulating outside incising pipes, is be wrapped in outside incising pipes by a kind of polyethylene tape to be formed, as shown in Figure 6.Composite metal belt is that mid portion is thick, the structure of thin edge; Composite metal belt is wound around and makes in composite pipe process, and edge is overlapped, the consistency of thickness of the thickness after imbricate and composite metal belt mid portion, thus makes the outer surface smoother of the incising pipes formed.
The total wall thickness of incising pipes is about 0.9mm; Internal diameter 5.2mm, external diameter 7mm, the incising pipes of preparation is about as 600mm.
Cutting wire material diameter is 2.4mm, is about as 600mm, and totally 3 are assemblied in incising pipes.Externally pipe material inner wall is uniform for described cutting wire material, and forms hollow structure in incising pipes center.
Specification 2: select wall thickness to be about the forging and stamping seamless steel pipe of 0.8mm, then adopt electroplating technology, within it outer both sides plate the copper plate of about thick 0.1mm, as mentioned above, or prepares the composite pipe with copper-iron/copper three-decker.The total wall thickness of tubing is about 1mm; Internal diameter 6.6mm, external diameter 8.6mm, the incising pipes of preparation is about as 600mm.
Cutting wire material diameter is 2.4mm, is about as 600mm, and totally 5 are assemblied in incising pipes.
Specification 3: select wall thickness to be about the forging and stamping seamless steel pipe of 0.8mm, then adopt electroplating technology, within it outer both sides plate the copper plate of about thick 0.1mm, as mentioned above, or prepares the composite pipe with copper-iron/copper three-decker.The total wall thickness of tubing is about 1mm; Internal diameter 8mm, external diameter 10mm, the incising pipes of preparation is about as 600mm.
Cutting wire material diameter is 2.4mm, is about as 600mm, and totally 7 are assemblied in incising pipes.
Find through experimental study, the ratio scope of the described diameter of cutting wire material and the wall thickness of incising pipes, 2.1 ~ 3, can reach good combustion efficiency.
According to the different demands of engineer applied, different percentage by weight powder core processing cutting materials can be adopted, such as:
Embodiment 1
Wherein, described iron particle size is-80 ~ 200 orders, and CuO Powder Particle Size is-80 ~ 200 orders, Cu
2o Powder Particle Size is-80 ~ 200 orders, and cerium granularity is-300 orders.
Then by multi-functional powder cored filament material forming machine, adopt multiple roll continuous rolling and the continuous hot candied tube reducing method of multiple tracks to manufacture, through cutting out band, roll band, fill out powder, sealing, wire drawing, alignment and cutting operation, obtain cutting wire material; Prepare silk material speed for about 40m/min, Aligning speed is about 5m/min.
The steel pipe adopting Forging Technology to be prepared from is as the incising pipes of outside, and the inside and outside electroplating technology that adopts of steel pipe is respectively coated with the thick copper plate of 0.1mm; Polyethylene tape is adopted to be wrapped in outside incising pipes as insulating barrier.
Be assembled in described incising pipes inner chamber by 3 cutting wire materials, form material for fast hand cutting under water, wherein, two is mild steel crust, and one is aluminium crust.
Wherein, incising pipes also can use the composite pipe of aforesaid copper-iron/copper three-decker, can be realized the flexible bending of incising pipes, and be coiled in together as tightrope by the incising pipes of composite metal belt coiling.
Table 1
| Powder core composition | Percentage by weight % |
| Cu 2O powder | 3％ |
| CuO powder | 5％ |
| Aluminium powder | 10％ |
| Cerium | 1％ |
| Iron powder | Surplus |
Adopt the material for fast hand cutting under water that said method is prepared from, carry out cutting test to the 45# steel plate at the depth of water 1 meter of thick 20mm in, cutting speed is 0.6mm/s.
Embodiment 2
Present embodiment is as different from Example 1: just Al powder, Fe powder, Cu
2o powder, CuO powder and cerium mix by content proportioning as shown in table 2, are assemblied in incising pipes inner chamber by 5 cutting wire materials, and wherein, 4 is steel crust, and 1 is aluminium crust, and prepare silk material speed for about 120m/min, Aligning speed is about 22m/min.
Table 2
| Powder core composition | Percentage by weight % |
| Cu 2O powder | 20％ |
| CuO powder | 5％ |
| Aluminium powder | 5％ |
| Cerium | 7％ |
| Iron powder | Surplus |
Adopt the material for fast hand cutting under water that said method is prepared from, carry out cutting test to the 45# steel plate at the depth of water 1 meter of thick 20mm in, cutting speed is 1.4mm/s.
Wherein, incising pipes also can use the composite pipe of aforesaid copper-iron/copper three-decker, can be realized the flexible bending of incising pipes, and be coiled in together as tightrope by the incising pipes of composite metal belt coiling.
Embodiment 3
Present embodiment is as different from Example 1: by Al powder, Fe powder, Cu
2o powder, CuO powder and cerium mix by content proportioning as shown in table 3, time in tubing containing 7 rhizoid material, 1-3 root wherein can be had to be aluminium crust bag metal powder, and remaining is iron crust bag metal powder, prepare silk material speed for about 80m/min, Aligning speed is about 18m/min.
Wherein, incising pipes also can use the composite pipe of aforesaid copper-iron/copper three-decker, can be realized the flexible bending of incising pipes, and be coiled in together as tightrope by the incising pipes of composite metal belt coiling.
Adopt the material for fast hand cutting under water that said method is prepared from, carry out cutting test to the 45# steel plate at the depth of water 1 meter of thick 20mm in, cutting speed is 2.5mm/s.
Material of the present invention can be applied to the cutting of metal material or nonmetallic materials under water; Usual nonmetallic materials can be concrete, brick or rock, and in addition, the incising pipes due to composite metal belt coiling can realize the flexible bending of incising pipes, and therefore, its length can not be subject to the restriction of underwater environment and equipment
Table 3
| Powder core composition | Percentage by weight % |
| Cu 2O powder | 10％ |
| CuO powder | 25％ |
| Aluminium powder | 2％ |
| Cerium | 7％ |
| Iron powder | Surplus |
In engineering practice, imderwater cutting material require utilizes diced system to complete cutting process, diced system comprises arc ignition system, air supply system, cutting gun three parts, arc ignition system is not by knife switch 5, form higher than striking power supply 6, wire 7, the copper run-on tab 8 of 36 volts, its effect to be ignited electric arc for material for fast hand cutting 11 under water, just can disconnection valve knife-like switch 5 after material for fast hand cutting 11 smooth combustion under water, thus disconnect striking power supply 6; Air supply system is made up of industrial oxygen cylinder 9 and oxygen gas circuit 13, and its effect is for cutting gun 12 provides oxygen, maintains cutting material 11 sustained combustion further, and removes the slag of cut workpiece 10; Cutting gun 12 is connected with industrial oxygen cylinder 9 by oxygen gas circuit 13, is connected with striking power supply 6 by wire 7, and clamps cutting material 11 pairs of workpiece 10 and cut.
Its course of work is, first, carries out the preparation before cutting, be connected various parts, striking power supply 6 the two poles of the earth connect cutting gun 12 and copper run-on tab 8 (positive and negative all can) respectively, and knife switch 5 is in off-state, and striking power supply 6 and industrial oxygen cylinder 9 are in more than waterline all the time; Secondly, carry out imderwater cutting, cutting gun 12, workpiece 10, copper run-on tab 8 are complete below waterline, staff on the bank closes knife switch 5, the cutting gun 12 of material for fast hand cutting 11 under operating personnel's hand-held clip water holding of imderwater cutting, and oxygen sent by the oxygen flux control valve on flicking cutting gun 12, cutting material 11 end is contacted with copper run-on tab 8 and paddling, ignite electric arc, after arc burning is stable, staff's disconnection valve knife-like switch 5 on the bank, and cutting material 11 end is moved on to workpiece 10 place by underwater operation personnel cuts; Finally, after having cut, dismounting all parts, is contained in tool box.
Claims (4)
1. utilize material for fast hand cutting under water to complete a diced system for cutting, this diced system comprises: arc ignition system, air supply system, cutting gun three part, is characterized in that:
Arc ignition system is not by knife switch (5), form higher than striking power supply (6), wire (7), the copper run-on tab (8) of 36 volts, its effect to be ignited electric arc for material for fast hand cutting (11) under water, under water just can disconnection valve knife-like switch (5) after material for fast hand cutting (11) smooth combustion, thus disconnect striking power supply (6);
Air supply system is made up of industrial oxygen cylinder (9) and oxygen gas circuit (13), its effect is for cutting gun (12) provides oxygen, maintain cutting material (13) sustained combustion further, and remove the slag of cut workpiece (12);
Cutting gun (12) is connected with industrial oxygen cylinder (9) by oxygen gas circuit (13), be connected with striking power supply (6) by wire (7), and clamp cutting material (11) workpiece (10) is cut; The hollow tubular structure that described cutting material is made up of incising pipes and the many inner cutting wire materials of outside, has a layer insulating outside incising pipes; Described cutting wire material length is identical with incising pipes length, and be made up of crust and powder core, described crust comprises bi-material, one is mild steel 08F steel band, its chemical composition is: by weight percentage, C 0.05% ~ 0.11%, Si≤0.03%, Mn 0.25% ~ 0.50%, P≤0.035%, S≤0.035%, Ni≤0.25%, Cr≤0.10%, all the other are iron and inevitable impurity; Another kind of crust is aluminium strip, and the ratio of the cutting wire material of two kinds of different skin materials is 2:1 ~ 6:1, and described powder core by weight percentage, consists of Cu
2o powder 3 ~ 20%, CuO powder 5 ~ 25%, Al powder 2 ~ 10%, cerium 1 ~ 7%, surplus is Fe powder, and described iron particle size is-80 ~ 200 orders, and CuO Powder Particle Size is-80 ~ 200 orders, Cu
2o Powder Particle Size is-80 ~ 200 orders, and cerium granularity is-300 orders.
2. diced system according to claim 1, it is characterized in that: before cutting, be connected various parts, striking power supply (6) the two poles of the earth connect cutting gun (12) and copper run-on tab (8) respectively, knife switch (5) is in off-state, and striking power supply (6) and industrial oxygen cylinder (9) are in more than waterline all the time.
3. diced system according to claim 1, it is characterized in that: when carrying out imderwater cutting, cutting gun (12), workpiece (10), copper run-on tab (8) are complete below waterline, close knife switch (5), oxygen is sent by the oxygen flux control valve on cutting gun (12), cutting material (11) end is contacted with copper run-on tab (8) and paddling, ignite electric arc, after arc burning is stable, cutting material (11) end is moved on to workpiece (10) place and cuts.
4. diced system according to claim 1 and 2, is characterized in that: mild steel 08F steel band is replaced with SPCC-SD type cold-rolled strip, and chemical composition is: by weight percentage, C≤0.15%, Mn≤0.60%, P≤0.1%, S≤0.025%, all the other are iron and inevitable impurity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210009003.2A CN102699544B (en) | 2012-01-12 | 2012-01-12 | Cutting system accomplishing cutting by using underwater manual rapid cutting material |
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|---|---|---|---|
| CN201210009003.2A CN102699544B (en) | 2012-01-12 | 2012-01-12 | Cutting system accomplishing cutting by using underwater manual rapid cutting material |
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| CN102699544B true CN102699544B (en) | 2015-02-11 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4069407A (en) * | 1975-12-10 | 1978-01-17 | Brower Jerome S | Underwater cutting rod |
| CN1431076A (en) * | 2003-01-23 | 2003-07-23 | 银舜生 | Quickspeed cutter without combustible gas |
| US6689259B1 (en) * | 1998-01-30 | 2004-02-10 | Dennis Klein | Mixed gas generator |
| CN101444876A (en) * | 2008-11-20 | 2009-06-03 | 清华大学 | Manual thermit welding electrode and preparation and using methods thereof |
| CN102049630A (en) * | 2010-11-09 | 2011-05-11 | 衣衍亮 | Material for fast hand cutting and application thereof |
| CN102059426A (en) * | 2010-11-09 | 2011-05-18 | 衣衍亮 | Manual fast cutting system and application thereof |
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2012
- 2012-01-12 CN CN201210009003.2A patent/CN102699544B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4069407A (en) * | 1975-12-10 | 1978-01-17 | Brower Jerome S | Underwater cutting rod |
| US6689259B1 (en) * | 1998-01-30 | 2004-02-10 | Dennis Klein | Mixed gas generator |
| CN1431076A (en) * | 2003-01-23 | 2003-07-23 | 银舜生 | Quickspeed cutter without combustible gas |
| CN101444876A (en) * | 2008-11-20 | 2009-06-03 | 清华大学 | Manual thermit welding electrode and preparation and using methods thereof |
| CN102049630A (en) * | 2010-11-09 | 2011-05-11 | 衣衍亮 | Material for fast hand cutting and application thereof |
| CN102059426A (en) * | 2010-11-09 | 2011-05-18 | 衣衍亮 | Manual fast cutting system and application thereof |
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| CN102699544A (en) | 2012-10-03 |
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