CN101109052A - Explosion-proof tool and manufacturing technique thereof - Google Patents
Explosion-proof tool and manufacturing technique thereof Download PDFInfo
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- CN101109052A CN101109052A CNA2007100261853A CN200710026185A CN101109052A CN 101109052 A CN101109052 A CN 101109052A CN A2007100261853 A CNA2007100261853 A CN A2007100261853A CN 200710026185 A CN200710026185 A CN 200710026185A CN 101109052 A CN101109052 A CN 101109052A
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Abstract
The invention relates to an explosion-proof tool and the production technique thereof. The tool is processed by metals with weight per cent of 3.5 per cent to 4 per cent titanium, 0.15 per cent to 0.25 per cent chromium, 0.5 per cent to 1 per cent aluminum and copper as the rest composition. The process method comprises the steps: first, casting. The raw materials are melted in a vacuum furnace at the high temperature of 1880 plus or minus 20 DEG C., and are kept at the temperature for 10 plus or minus 2 the minutes, and then the semi-finished products are cast under the vacuum state; second, quenching. The semi-finished products after being cut the gating and polished are put into a heat treatment furnace and heated at 880 plus or minus 20 DEG C., are kept at the temperature for 10 plus or minus 2 the minutes, and then are placed in the cooling liquid of the normal temperature clear water to be cooled quickly; third, artificial aging processing. The products are put into the heat-treatment furnace, heated at 430 plus or minus 20 DEG C., kept at the temperature for 2 to 3 hours, and then are cooled with the furnace. The invention features the simple production technique and rich raw material sources, and that the performance-price is superior to that of the aluminum bronze explosion-proof tool and the beryllium bronze explosion-proof tool, the hardness is of HRC42 above, the torque value is superior to the national standards A and C series, and the explosion-proof performance meets the related standard class-EXIIC. The invention also processes the diamagnetic performance.
Description
Technical field
The present invention relates to a kind of explosion-proof instrument and production technique thereof.
Background technology
Present domestic explosion-proof instrument mainly adopts xantal or beryllium-bronze material to be made.The explosion-proof instrument that the xantal material is made, its hardness, intensity are lower, and wherein hardness is more than the HRC25, and torque value reaches the B and the D series (low series) of the relevant explosion-proof instrument standard QB/T2613.1 of country～7-2003 regulation.Explosion-proof instrument hardness, intensity that beryllium-bronze material is made are higher than xantal material explosion-proof instrument, its hardness, intensity are higher, wherein hardness is more than the HRC35, and torque value reaches the A and the C series (high series) of the relevant explosion-proof instrument standard QB/T2613.1 of country～7-2003 regulation.
The shortcoming of aluminium-bronze explosion-proof tool is that because of its performance is low life cycle is short; Though berylliumbronze explosion-proof instrument performance is higher than aluminium-bronze explosion-proof tool, its cost and unit cost are quite high, are about the twice of xantal like product.Beryllium has certain injury to human body when smelting in addition, is engaged in beryllium for a long time and smelts the selenium tuberculosis that is easy to get.
Summary of the invention
Technical problem to be solved by this invention is exactly present explosion-proof instrument low cost, lower performance; High-performance, expensive shortcoming, for people provide a kind of novel material, high performance explosion-proof instrument and preparation technology thereof.
The present invention is prepared from by mass ratio by following metal:
Titanium: 3.5-4%, chromium: 0.15-0.25%, aluminium: 0.5-1%'s, all the other are copper.
Preparation method of the present invention comprises the steps:
1) casting:, in vacuum oven, through 1880 ± 20 ℃ of high temperature melting and be incubated 10 ± 2 minutes, under vacuum state, be cast into work in-process then with the titanium of total mass 3.5-4%, the chromium of 0.15-0.25%, the aluminium of 0.5-1% and the copper of surplus;
2) quench: put into heat treatment furnace after work in-process are cut cast gate, polishing,, and be incubated 10 ± 2 minutes, put into medium and be the cooling fluid of normal temperature clear water and cool off fast through 880 ± 20 ℃ of heating;
3) artificial aging is handled: the product after will quenching is put into heat treatment furnace, through 430 ± 20 ℃ of heating, and is incubated 2-3 hour, then furnace cooling.
The length of artificial aging time is according to the section thickness control of the size of product and product, and the product soaking time that big product, cross section are thick is longer.
Above-mentioned steps 3) can optionally increase the metalworking step before, described metalworking comprise cut, cut, car, one or more working methods in digging, draw, bore, mill etc.
Production technique of the present invention is simple, rich raw material sources (China's metal titanium reserves and output account for the No. 1 in the world), its cost performance is much better than aluminium-bronze explosion-proof tool and berylliumbronze explosion-proof instrument, be equivalent to the xantal like product in cost of manufacture, under the situation far below berylliumbronze like product (cost and unit cost are about berylliumbronze explosion-proof instrument like product 60%), hardness, performance index such as moment of torsion are all above the berylliumbronze explosion-proof instrument, hardness reaches more than the HRC42, torque value surpasses the A and the C series (high series) of the relevant explosion-proof instrument standard QB/T2613.1 of country～7-2003 regulation, and explosion-proof performance satisfies the EXIIC level (the highest explosion proof ratings) of relevant criterion GB10686-1989 regulation.Simultaneously, because the present invention also has diamagnetic performance (equipment that can be used for high-intensity magnetic field institute is installed, maintenance, the use range of increase product), be a kind of high-performance, explosion-proof instrument regeneration product cheaply.
Embodiment
Embodiment 1: the preparation of doubleoffset ring spanner
1) casting: will account for the titanium of alloy total mass 3.6%, 0.18% chromium, 0.6% the aluminium and the copper of surplus are put into vacuum oven through 1870 ℃ of fusings, are incubated cast molding under vacuum state after 10 minutes; Come out of the stove after cold slightly; After cooling off fully, cuts on foundry goods cast gate, polishing.
2) quench: will cut cast gate and the workpiece of polish is put into heat treatment furnace again and heated and be incubated 10 minutes through 870 ℃, coming out of the stove and putting into medium fast is that the cooling fluid of normal temperature clear water is cooled off fast.
3) metalworking: the workpiece after quench treatment is carried out following metalworking: broaching plum blossom hole----chamfering.
4) artificial aging is handled: will put into heat treatment furnace again through 440 ℃ of heating through the workpiece of above-mentioned metalworking, and be incubated 2 hours 30 minutes, then furnace cooling; Complete cooled workpiece is the doubleoffset ring spanner finished product through polishing.
The described doubleoffset ring spanner basic mechanical design feature of present embodiment is: hardness is more than HRC42, and torque value surpasses to the A of the relevant explosion-proof instrument standard QB/T2613.1 of country ~ 7-2003 regulation and C series (high series) requirement.
Embodiment 2: the preparation of chisel
1) casting: will account for the titanium of alloy total mass 3.8%, 0.2% chromium, 0.8% the aluminium and the copper of surplus are put into vacuum oven through 1890 ℃ of fusings, are incubated cast molding under vacuum state after 12 minutes; Come out of the stove after cold slightly; After cooling off fully, cuts on foundry goods cast gate, polishing.
2) quench: will cut cast gate and the workpiece of polish is put into heat treatment furnace again and heated and be incubated 12 minutes through 900 ℃, coming out of the stove and putting into medium fast is that the cooling fluid of normal temperature clear water is cooled off fast, workpiece after quench treatment is again through polishing, the workpiece that to polish is put into heat treatment furnace again through 450 ℃ of heating then, and be incubated 2 hours 40 minutes, furnace cooling then; Complete cooled workpiece is the chisel finished product through polishing.The chisel salient features of this moment is: wherein hardness is more than HRC42.
Claims (4)
1. high-performance titanium-alloy explosion-prevention tool is characterized in that it is prepared from by mass ratio by following metal:
Titanium: 3.5-4%, chromium: 0.15-0.25%, aluminium: 0.5-1%'s, all the other are copper.
2. the preparation method of the described high-performance titanium-alloy explosion-prevention tool of claim 1 is characterized in that comprising the steps:
1) casting:, in vacuum oven, through 1880 ± 20 ℃ of high temperature melting and be incubated 10 ± 2 minutes, under vacuum state, be cast into work in-process then with the titanium of total mass 3.5-4%, the chromium of 0.15-0.25%, the aluminium of 0.5-1% and the copper of surplus;
2) quench: put into heat treatment furnace after work in-process are cut cast gate, polishing,, and be incubated 10 ± 2 minutes, put into medium and be the cooling fluid of normal temperature clear water and cool off fast through 880 ± 20 ℃ of heating;
3) artificial aging is handled: the product after will quenching is put into heat treatment furnace, through 430 ± 20 ℃ of heating, and is incubated 2-3 hour, then furnace cooling.
3. as the preparation method of high-performance titanium-alloy explosion-prevention tool as described in the claim 2, it is characterized in that before step 3), also comprising high metalworking step.
4. the preparation method of high-performance titanium-alloy explosion-prevention tool as claimed in claim 3, it is characterized in that described metalworking step comprise cut, cut, car, in digging, draw, bore, milling one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100261853A CN101109052A (en) | 2007-08-20 | 2007-08-20 | Explosion-proof tool and manufacturing technique thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100261853A CN101109052A (en) | 2007-08-20 | 2007-08-20 | Explosion-proof tool and manufacturing technique thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101109052A true CN101109052A (en) | 2008-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100261853A Pending CN101109052A (en) | 2007-08-20 | 2007-08-20 | Explosion-proof tool and manufacturing technique thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101109052A (en) |
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2007
- 2007-08-20 CN CNA2007100261853A patent/CN101109052A/en active Pending
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080123 |