CN108568702A - The sub-zero machining technique of titanium alloy workpiece - Google Patents
The sub-zero machining technique of titanium alloy workpiece Download PDFInfo
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- CN108568702A CN108568702A CN201810680725.8A CN201810680725A CN108568702A CN 108568702 A CN108568702 A CN 108568702A CN 201810680725 A CN201810680725 A CN 201810680725A CN 108568702 A CN108568702 A CN 108568702A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
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Abstract
The invention discloses a kind of sub-zero machining technique of titanium alloy workpiece, which includes the following steps：1) liquid nitrogen is flashed into the low temperature nitrogen that temperature is 1 DEG C~12 DEG C, cooling treatment is carried out to titanium alloy workpiece using low temperature nitrogen, obtains cooling titanium alloy workpiece；2) titanium alloy workpiece after cooling treatment is subjected to machining on machining tool, cutting depth is 0.05mm~3mm, and feed speed is 3mm/min~90mm/min.The sub-zero machining technique of the titanium alloy workpiece of the present invention is not only high in machining efficiency, and cutter consumption is small, and avoids the risk for causing chip high-temp combustion, and machining is safe.
Description
Technical field
The present invention relates to the Machining Technology for Cutting fields of titanium alloy product, are cut in particular to a kind of low temperature of titanium alloy workpiece
Cut technique.
Background technology
The chemical property of titanium alloy material is more active, in 800 DEG C or more high temperature, is easily generated with halogen, oxygen, sulphur, nitrogen
Combination reaction, can in nitrogen vigorous combustion, can decompose water at 1000 DEG C or more, release hydrogen.Powdery or fine strip shape titanium alloy
It can be lighted at 600 DEG C or more, blocky titanium alloy can generate spontaneous combustion at 1200 DEG C or more.In addition, the poor thermal conductivity of titanium alloy, heat conduction
Rate only has the 20% of ordinary carbon steel, in Dry-cutting, if cutting speed is too fast, tool wear rust, depth of cut
When excessively thin, chip easy tos produce high-temp combustion.
In addition, titanium alloy workpiece needs carry out Dry-cutting after being assembled with composite products in special circumstances,
Cutting coolant cannot be poured into a mould, and Product Precision requires height, not only processing efficiency is extremely low, and cutter consumption is big, but also exists
The security risk of chip high-temp combustion.
Invention content
Present invention aim to provide a kind of sub-zero machining technique of titanium alloy workpiece, which can improve titanium conjunction
The processing efficiency of metal working part cutting, reduces the consumption of cutter, and can avoid the problem that chip high-temp combustion.
To achieve the above object, the sub-zero machining technique of the titanium alloy workpiece designed by the present invention, includes the following steps：
1) it is 1 DEG C~12 DEG C of low temperature nitrogen liquid nitrogen to be flashed to temperature, using low temperature nitrogen to titanium alloy workpiece into
Row cooling treatment obtains cooling titanium alloy workpiece；
2) titanium alloy workpiece after cooling treatment is subjected to machining on machining tool, cutting depth be 0.05mm~
3mm, feed speed are 3mm/min~90mm/min.
Further, in the step 1), the air flow rate of low temperature nitrogen is 20Nm3/ h~30Nm3/h。
Further, in the step 1), the temperature of low temperature nitrogen is 5 DEG C~10 DEG C.
Further, in the step 1), titanium alloy workpiece is workpiece containing coated on titanium alloy, the work containing coated on titanium alloy
Part includes metal body and the coating coated in metal body outer surface, and the metal body is made of YG15 alloy materials, institute
It is that TiN materials coat to state coating.
Further, in the step 1), titanium alloy workpiece is uncoated titanium alloy workpiece, the uncoated titanium alloy work
Part is workpiece made of YG15 alloy materials.
Further, in the step 2), cutting linear velocity is 3m/min~190m/min, chip temperature≤100 DEG C.
Preferably, in the step 2), cutting linear velocity is 3m/min~190m/min, and chip temperature is 60 DEG C~100
℃。
Still further, in the step 2), cutting linear velocity is 3m/min~150m/min, chip temperature≤95 DEG C.
Preferably, in the step 2), cutting linear velocity is 3m/min~150m/min, 55 DEG C~95 DEG C of chip temperature.
Further, in the step 2), cutting depth is 0.1mm~1.5mm, and feed speed is 10mm/min~70mm/min.
Compared with the prior art, the advantages of the present invention are as follows：
First, the sub-zero machining technique of the present invention carries out cooling treatment by using low temperature nitrogen to titanium alloy workpiece, it is low
The temperature of warm nitrogen is 1 DEG C~12 DEG C, can in a short time be quickly cooled down titanium alloy workpiece, will not occur with nitrogen
High-temp combustion reacts, and also avoids chip in process and spontaneous combustion occurs, to reduce the consumption of titanium alloy workpiece
Rate.
Second, the present invention sub-zero machining technique in cutting depth be 0.05mm~3mm, feed speed be 3mm/min~
90mm/min, cutting depth, feed speed are reasonable, avoid depth of cut it is excessively thin when, chip easy tos produce asking for high-temp combustion
Topic.
Third, cutting linear velocity is 3m/min~190m/min in the sub-zero machining technique of the present invention, it can be to avoid cutting
The problem of excessive velocities, tool wear rust, improve the precision of product.
Description of the drawings
Fig. 1 is a kind of schematic cross-sectional view of workpiece containing coated on titanium alloy；
Fig. 2 is a kind of schematic cross-sectional view of uncoated titanium alloy workpiece；
In figure, workpiece containing coated on titanium alloy 1, metal body 1.1, coating 1.2, uncoated titanium alloy workpiece 2.
Specific implementation mode
Below in conjunction with specific embodiment, the present invention is described in further detail：
Embodiment 1：
A kind of sub-zero machining technique of titanium alloy workpiece of the present invention, includes the following steps：
1) liquid nitrogen is flashed into the low temperature nitrogen that temperature is 10 DEG C, titanium alloy workpiece is cooled down using low temperature nitrogen
The gas flow of processing, low temperature nitrogen is 20Nm3/ h, obtains cooling titanium alloy workpiece, and titanium alloy workpiece is YG15 alloy materials
Uncoated titanium alloy workpiece 2 made of material；
2) titanium alloy workpiece after cooling treatment is subjected to machining, cutting linear velocity 150m/ on machining tool
Min, cutting depth 3mm, feed speed 90mm/min, machining safety, chip temperature is 95 DEG C, and (infrared radiation thermometer is aobvious
Temperature displaying function).
The above method is compared with conventional dry cutting, and processing efficiency improves 3 times or more, and cutter use improves 3 times with the service life
More than, and process safety.
Embodiment 2：
A kind of sub-zero machining technique of titanium alloy workpiece of the present invention, includes the following steps：
1) liquid nitrogen is flashed into the low temperature nitrogen that temperature is 10 DEG C, titanium alloy workpiece is cooled down using low temperature nitrogen
The gas flow of processing, low temperature nitrogen is 20Nm3/ h, obtains cooling titanium alloy workpiece, and titanium alloy workpiece is to be closed containing coated titanium
Metal working part 1, the workpiece containing coated on titanium alloy 1 include metal body 1.1 and the coating 1.2 coated in metal body outer surface,
The metal body 1.1 is made of YG15 alloy materials, and the coating 1.2 is that TiN materials coat；
2) titanium alloy workpiece after cooling treatment is subjected to machining, cutting linear velocity 150m/ on machining tool
Min, cutting depth 3mm, feed speed 90mm/min, machining safety, chip temperature is 80 DEG C, and (infrared radiation thermometer is aobvious
Temperature displaying function).
The above method is compared with conventional dry cutting, and processing efficiency improves 3 times or more, and cutter use improves 3 times with the service life
More than, and process safety.
Embodiment 3：
A kind of sub-zero machining technique of titanium alloy workpiece of the present invention, includes the following steps：
1) liquid nitrogen is flashed into the low temperature nitrogen that temperature is 10 DEG C, titanium alloy workpiece is cooled down using low temperature nitrogen
The gas flow of processing, low temperature nitrogen is 20Nm3/ h, obtains cooling titanium alloy workpiece, and titanium alloy workpiece is YG15 alloy materials
Uncoated titanium alloy workpiece 2 made of material；
2) titanium alloy workpiece after cooling treatment is subjected to machining, cutting linear velocity 150m/ on machining tool
Min, cutting depth 1.5mm, feed speed 90mm/min, machining safety, chip temperature are 90 DEG C of (infrared radiation thermometers
Displays temperature).
The above method is compared with conventional dry cutting, and processing efficiency improves 3 times or more, and cutter use improves 3 times with the service life
More than, and process safety.
Embodiment 4：
A kind of sub-zero machining technique of titanium alloy workpiece of the present invention, includes the following steps：
1) liquid nitrogen is flashed into the low temperature nitrogen that temperature is 10 DEG C, titanium alloy workpiece is cooled down using low temperature nitrogen
The gas flow of processing, low temperature nitrogen is 20Nm3/ h, obtains cooling titanium alloy workpiece, and titanium alloy workpiece is to be closed containing coated titanium
Metal working part 1, the workpiece containing coated on titanium alloy 1 include metal body 1.1 and the coating 1.2 coated in metal body outer surface,
The metal body 1.1 is made of YG15 alloy materials, and the coating 1.2 is that TiN materials coat；
2) titanium alloy workpiece after cooling treatment is subjected to machining, cutting linear velocity 150m/ on machining tool
Min, cutting depth 1.5mm, feed speed 90mm/min, machining safety, chip temperature are 75 DEG C of (infrared radiation thermometers
Displays temperature).
The above method is compared with conventional dry cutting, and processing efficiency improves 3 times or more, and cutter use improves 3 times with the service life
More than, and process safety.
Embodiment 5：
A kind of sub-zero machining technique of titanium alloy workpiece of the present invention, includes the following steps：
1) liquid nitrogen is flashed into the low temperature nitrogen that temperature is 10 DEG C, titanium alloy workpiece is cooled down using low temperature nitrogen
The gas flow of processing, low temperature nitrogen is 20Nm3/ h, obtains cooling titanium alloy workpiece, and titanium alloy workpiece is YG15 alloy materials
Uncoated titanium alloy workpiece 2 made of material；
2) titanium alloy workpiece after cooling treatment is subjected to machining, cutting linear velocity 150m/ on machining tool
Min, cutting depth 0.1mm, feed speed 90mm/min, machining safety, chip temperature are 80 DEG C of (infrared radiation thermometers
Displays temperature).
The above method is compared with conventional dry cutting, and processing efficiency improves 3 times or more, and cutter use improves 3 times with the service life
More than, and process safety.
Embodiment 6：
A kind of sub-zero machining technique of titanium alloy workpiece of the present invention, includes the following steps：
1) liquid nitrogen is flashed into the low temperature nitrogen that temperature is 10 DEG C, titanium alloy workpiece is cooled down using low temperature nitrogen
The gas flow of processing, low temperature nitrogen is 20Nm3/ h, obtains cooling titanium alloy workpiece, and titanium alloy workpiece is to be closed containing coated titanium
Metal working part 1, the workpiece containing coated on titanium alloy 1 include metal body 1.1 and the coating 1.2 coated in metal body outer surface,
The metal body 1.1 is made of YG15 alloy materials, and the coating 1.2 is that TiN materials coat；
2) titanium alloy workpiece after cooling treatment is subjected to machining, cutting linear velocity 150m/ on machining tool
Min, cutting depth 0.1mm, feed speed 90mm/min, machining safety, chip temperature are 65 DEG C of (infrared radiation thermometers
Displays temperature).
The above method is compared with conventional dry cutting, and processing efficiency improves 3 times or more, and cutter use improves 3 times with the service life
More than, and process safety.
Embodiment 7：
A kind of sub-zero machining technique of titanium alloy workpiece of the present invention, includes the following steps：
1) liquid nitrogen is flashed into the low temperature nitrogen that temperature is 1 DEG C, titanium alloy workpiece is cooled down using low temperature nitrogen
The gas flow of processing, low temperature nitrogen is 30Nm3/ h, obtains cooling titanium alloy workpiece, and titanium alloy workpiece is YG15 alloy materials
Uncoated titanium alloy workpiece 2 made of material；
2) titanium alloy workpiece after cooling treatment is subjected to machining, cutting linear velocity 150m/ on machining tool
Min, cutting depth 3mm, feed speed 10mm/min, machining safety, chip temperature is 90 DEG C, and (infrared radiation thermometer is aobvious
Temperature displaying function).
The above method is compared with conventional dry cutting, and processing efficiency improves 3 times or more, and cutter use improves 3 times with the service life
More than, and process safety.
Embodiment 8：
A kind of sub-zero machining technique of titanium alloy workpiece of the present invention, includes the following steps：
1) liquid nitrogen is flashed into the low temperature nitrogen that temperature is 1 DEG C, titanium alloy workpiece is cooled down using low temperature nitrogen
The gas flow of processing, low temperature nitrogen is 30Nm3/ h, obtains cooling titanium alloy workpiece, and titanium alloy workpiece is to be closed containing coated titanium
Metal working part 1, the workpiece containing coated on titanium alloy 1 include metal body 1.1 and the coating 1.2 coated in metal body outer surface,
The metal body 1.1 is made of YG15 alloy materials, and the coating 1.2 is that TiN materials coat；
2) titanium alloy workpiece after cooling treatment is subjected to machining, cutting linear velocity 190m/ on machining tool
Min, cutting depth 3mm, feed speed 10mm/min, machining safety, chip temperature are 100 DEG C of (infrared radiation thermometers
Displays temperature).
The above method is compared with conventional dry cutting, and processing efficiency improves 3 times or more, and cutter use improves 3 times with the service life
More than, and process safety.
Embodiment 9：
A kind of sub-zero machining technique of titanium alloy workpiece of the present invention, includes the following steps：
1) liquid nitrogen is flashed into the low temperature nitrogen that temperature is 12 DEG C, titanium alloy workpiece is cooled down using low temperature nitrogen
The gas flow of processing, low temperature nitrogen is 30Nm3/ h, obtains cooling titanium alloy workpiece, and titanium alloy workpiece is YG15 alloy materials
Uncoated titanium alloy workpiece 2 made of material；
2) titanium alloy workpiece after cooling treatment is subjected to machining, cutting linear velocity 100m/ on machining tool
Min, cutting depth 1.5mm, feed speed 70mm/min, machining safety, chip temperature are 85 DEG C of (infrared radiation thermometers
Displays temperature).
The above method is compared with conventional dry cutting, and processing efficiency improves 3 times or more, and cutter use improves 3 times with the service life
More than, and process safety.
Embodiment 10：
A kind of sub-zero machining technique of titanium alloy workpiece of the present invention, includes the following steps：
1) liquid nitrogen is flashed into the low temperature nitrogen that temperature is 12 DEG C, titanium alloy workpiece is cooled down using low temperature nitrogen
The gas flow of processing, low temperature nitrogen is 30Nm3/ h, obtains cooling titanium alloy workpiece, and titanium alloy workpiece is to be closed containing coated titanium
Metal working part 1, the workpiece containing coated on titanium alloy 1 include metal body 1.1 and the coating 1.2 coated in metal body outer surface,
The metal body 1.1 is made of YG15 alloy materials, and the coating 1.2 is that TiN materials coat；
2) titanium alloy workpiece after cooling treatment is subjected to machining, cutting linear velocity 150m/ on machining tool
Min, cutting depth 1.5mm, feed speed 70mm/min, machining safety, chip temperature are 60 DEG C of (infrared radiation thermometers
Displays temperature).
The above method is compared with conventional dry cutting, and processing efficiency improves 3 times or more, and cutter use improves 3 times with the service life
More than, and process safety.
Embodiment 11：
A kind of sub-zero machining technique of titanium alloy workpiece of the present invention, includes the following steps：
1) liquid nitrogen is flashed into the low temperature nitrogen that temperature is 5 DEG C, titanium alloy workpiece is cooled down using low temperature nitrogen
The gas flow of processing, low temperature nitrogen is 30Nm3/ h, obtains cooling titanium alloy workpiece, and titanium alloy workpiece is YG15 alloy materials
Uncoated titanium alloy workpiece 2 made of material；
2) titanium alloy workpiece after cooling treatment is subjected to machining on machining tool, cutting linear velocity 3m/min,
Cutting depth is 0.05mm, feed speed 3mm/min, and machining safety, chip temperature is 70 DEG C, and (infrared radiation thermometer is shown
Temperature).
The above method is compared with conventional dry cutting, and processing efficiency improves 3 times or more, and cutter use improves 3 times with the service life
More than, and process safety.
Embodiment 12：
A kind of sub-zero machining technique of titanium alloy workpiece of the present invention, includes the following steps：
1) liquid nitrogen is flashed into the low temperature nitrogen that temperature is 5 DEG C, titanium alloy workpiece is cooled down using low temperature nitrogen
The gas flow of processing, low temperature nitrogen is 30Nm3/ h, obtains cooling titanium alloy workpiece, and titanium alloy workpiece is to be closed containing coated titanium
Metal working part 1, the workpiece containing coated on titanium alloy 1 include metal body 1.1 and the coating 1.2 coated in metal body outer surface,
The metal body 1.1 is made of YG15 alloy materials, and the coating 1.2 is that TiN materials coat；
2) titanium alloy workpiece after cooling treatment is subjected to machining on machining tool, cutting linear velocity 3m/min,
Cutting depth is 0.05mm, feed speed 3mm/min, and machining safety, chip temperature is 55 DEG C, and (infrared radiation thermometer is shown
Temperature).
The above method is compared with conventional dry cutting, and processing efficiency improves 3 times or more, and cutter use improves 3 times with the service life
More than, and process safety.
These are only the specific implementation mode of the present invention, it is noted that remaining unspecified content is the prior art,
Any technical person familiar with the field is in disclosed technical scope, the change or replacement that can be readily occurred in, all
It is covered by the protection scope of the present invention.
Claims (8)
1. a kind of sub-zero machining technique of titanium alloy workpiece, it is characterised in that：Include the following steps：
1) liquid nitrogen is flashed into the low temperature nitrogen that temperature is 1 DEG C~12 DEG C, titanium alloy workpiece is carried out using low temperature nitrogen cold
But it handles, obtains cooling titanium alloy workpiece；
2) titanium alloy workpiece after cooling treatment being subjected to machining on machining tool, cutting depth is 0.05mm~3mm, into
It is 3mm/min~90mm/min to speed.
2. the sub-zero machining technique of titanium alloy workpiece according to claim 1, it is characterised in that：It is low in the step 1)
The air flow rate of warm nitrogen is 20Nm3/ h~30Nm3/h。
3. the sub-zero machining technique of titanium alloy workpiece according to claim 1, it is characterised in that：It is low in the step 1)
The temperature of warm nitrogen is 5 DEG C~10 DEG C.
4. the sub-zero machining technique of titanium alloy workpiece according to claim 1 or 2 or 3, it is characterised in that：The step 1)
In, titanium alloy workpiece be workpiece containing coated on titanium alloy (1), the workpiece containing coated on titanium alloy (1) include metal body (1.1) and
Coating (1.2) coated in metal body outer surface, the metal body (1.1) are made of YG15 alloy materials, the coating
(1.2) it is that TiN materials coat.
5. the sub-zero machining technique of titanium alloy workpiece according to claim 1 or 2 or 3, it is characterised in that：The step 1)
In, titanium alloy workpiece is uncoated titanium alloy workpiece (2), and the uncoated titanium alloy workpiece (2) is made of YG15 alloy materials
Workpiece.
6. the sub-zero machining technique of titanium alloy workpiece according to claim 4, it is characterised in that：In the step 2), cut
It is 3m/min~190m/min, chip temperature≤100 DEG C to cut linear velocity.
7. the sub-zero machining technique of titanium alloy workpiece according to claim 5, it is characterised in that：In the step 2), cut
It is 3m/min~150m/min, chip temperature≤95 DEG C to cut linear velocity.
8. the sub-zero machining technique of titanium alloy workpiece according to claim 1 or 2 or 3, which is characterized in that the step 2)
In, cutting depth is 0.1mm~1.5mm, and feed speed is 10mm/min~70mm/min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113290421A (en) * | 2021-06-28 | 2021-08-24 | 中国工程物理研究院机械制造工艺研究所 | Local low-temperature heat insulation device and system for cerium lanthanum alloy ultra-precision machining |
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