CN102690970A - High-performance titanium alloy explosion-proof tool and preparation method thereof - Google Patents
High-performance titanium alloy explosion-proof tool and preparation method thereof Download PDFInfo
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- CN102690970A CN102690970A CN2011100713289A CN201110071328A CN102690970A CN 102690970 A CN102690970 A CN 102690970A CN 2011100713289 A CN2011100713289 A CN 2011100713289A CN 201110071328 A CN201110071328 A CN 201110071328A CN 102690970 A CN102690970 A CN 102690970A
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Abstract
The present invention relates to a high-performance titanium alloy explosion-proof tool and a preparation method thereof. The tool is prepared from the following metals, according to mass ratio: 3.5-4% of titanium, 0.15-0.25% of chromium, 0.5-1% of aluminium and the balance of copper. The preparation method comprises the following step of: 1) casting: fusing each raw material in a vacuum furnace at a high temperature of 1880 +/- 20 DEG C, and casting a semi-finished product under a vacuum state; 2) quenching: placing the semi-finished product treated with gate cutting and polishing into a heat treatment furnace, heating at 880 +/- 20 DEG C, insulating for 10+/-20 min, and placing the semi-finished product into a liquid coolant with a medium of normal temperature clear water for rapid cooling; and 3) artificial aging treatment: placing the product in the heat treatment furnace, heating at 430+/-20 DEG C, insulating for 2-3 h and cooling in the furnace. The high-performance titanium alloy explosion-proof tool of the invention is produced through simple technology and from raw materials with abundant resource, and has a cost performance much better than that of an aluminium bronze explosion-proof tool and a beryllium bronze explosion-proof tool, hardness reaching more than HRC42, torque value exceeding series A and series C in national standard and explosion-proof performance satisfying grade EXIIC of correlative standard. The high-performance titanium alloy explosion-proof tool of the invention also has diamagnetic performance.
Description
Technical field
The present invention relates to a kind of high-performance titanium-alloy explosion-prevention tool and preparation method thereof.
Background technology
Present domestic explosion-proof instrument mainly adopts xantal or beryllium-bronze material to be made.The explosion-proof instrument of xantal material, its hardness, intensity are lower, and wherein hardness is more than the HRC25, and torque value reaches the B and D series (low serial) 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 that present explosion-proof instrument is 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 on following metal:
Titanium: 3.5-4%, chromium: 0.15-0.25%, aluminium: 0.5-1%'s, all the other are copper.
Preparing method of the present invention comprises the steps:
1) casting:, in vacuum oven,, under vacuum state, be cast into work in-process then through 1880 ± 20 ℃ of high temperature melting and be incubated 10 ± 2 minutes 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 quench liquid 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, said 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%); Performance index such as hardness, moment of torsion are all above the berylliumbronze explosion-proof instrument; Hardness reaches more than the HRC42, and 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 and put into 870 ℃ on heat treatment furnace warp again and heat and be incubated 10 minutes, coming out of the stove and putting into medium fast is that the quench liquid 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: the workpiece that will pass through above-mentioned metalworking is put into heat treatment furnace again through 440 ℃ of heating, and is incubated 2 hours 30 minutes, then furnace cooling; Complete cooled workpiece is the doubleoffset ring spanner finished product through polishing.
The said 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 put into 900 ℃ of heating of heat treatment furnace warp again and be incubated 12 minutes with the workpiece of polishing; Coming out of the stove and putting into medium fast is that the quench liquid of normal temperature clear water is cooled off fast; Workpiece after quench treatment is again through polishing; The workpiece that to polish is then put into heat treatment furnace again through 450 ℃ of heating, and is incubated 2 hours 40 minutes, then furnace cooling; 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 on 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 said high-performance titanium-alloy explosion-prevention tool of claim 1 is characterized in that comprising the steps:
1) casting:, in vacuum oven,, under vacuum state, be cast into work in-process then through 1880 ± 20 ℃ of high temperature melting and be incubated 10 ± 2 minutes 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 quench liquid 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. like the preparation method of the said high-performance titanium-alloy explosion-prevention tool of 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 said metalworking step comprise cut, cut, car, in digging, draw, bore, milling one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100713289A CN102690970A (en) | 2011-03-22 | 2011-03-22 | High-performance titanium alloy explosion-proof tool and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100713289A CN102690970A (en) | 2011-03-22 | 2011-03-22 | High-performance titanium alloy explosion-proof tool and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102690970A true CN102690970A (en) | 2012-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100713289A Pending CN102690970A (en) | 2011-03-22 | 2011-03-22 | High-performance titanium alloy explosion-proof tool and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102690970A (en) |
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2011
- 2011-03-22 CN CN2011100713289A patent/CN102690970A/en active Pending
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Application publication date: 20120926 |