CN204589304U - Laser melting coating temperature detection and regulation device - Google Patents
Laser melting coating temperature detection and regulation device Download PDFInfo
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- CN204589304U CN204589304U CN201520122848.1U CN201520122848U CN204589304U CN 204589304 U CN204589304 U CN 204589304U CN 201520122848 U CN201520122848 U CN 201520122848U CN 204589304 U CN204589304 U CN 204589304U
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Abstract
Laser melting coating temperature detection and regulation device, this device comprises laser apparatus, laser controller, protective atmosphere case, speculum, high-pressure nitrogen bottle, magnetic valve, vacuum jacketed flask, liquid nitrogen splitter, thermopair, temperature signal amplifier, A/D analog to digital converter and Temperature displaying and controller; The beneficial effect that the utility model reaches: widened the research field of laser melting coating, differs the larger detection of this kind of laser melting coating temperature for coated material with body material thermal physical property parameter and the control of substrate temperature rise serves good effect.
Description
Technical field
The utility model belongs to laser technology, material surface modifying technology field, particularly a kind of laser melting coating temperature detection and regulation device.
Background technology
In traditional laser melting coating, base material is roughly the same with the hot physical property of cladding layer material, like this when considering the processing parameter of cladding, can not bring difficulty because of the difference of two sections of material thermal physical property parameter.But, in order to strengthen the performance of substrate, the using priciple of material occurs situation about distinguishing to some extent with conventional laser cladding sometimes.
Summary of the invention
The utility model, for the deficiencies in the prior art, proposes a kind of laser melting coating temperature detection and regulation device.The utility model for be that coated material differs larger laser melting coating with body material thermal physical property parameter, while being to ensure bi-material metallurgical binding, avoid that base material temperature rise is excessive even seethes with excitement, ensure carrying out smoothly of laser cladding process, well solve above-mentioned difficulties.
This device comprises laser apparatus, laser controller, protective atmosphere case, speculum, high-pressure nitrogen bottle, magnetic valve, vacuum jacketed flask, liquid nitrogen splitter, thermopair, temperature signal amplifier, A/D analog to digital converter and Temperature displaying and controller;
The input terminus of a laser controller output terminal connecting laser, the front of laser apparatus arranges speculum, another output terminal of laser controller connects protective atmosphere case, the cladding test specimen that protective atmosphere case inside is arranged is connected with external heat galvanic couple, the signal output part of thermopair connects the input terminus of temperature signal amplifier, the output terminal of temperature signal amplifier connects the input terminus of A/D analog to digital converter, the defeated place end of A/D analog to digital converter connects Temperature displaying and controller input terminus, the output terminal of Temperature displaying and controller is by the output valve of solenoid control high-pressure nitrogen bottle and the output valve of vacuum jacketed flask, vacuum jacketed flask output valve connects the transfer valve of liquid nitrogen splitter, liquid nitrogen splitter output terminal is to each side injection liquid mist state nitrogen of the inner cladding test specimen of protective atmosphere case.
Described protective atmosphere case comprises liquid nitrogen conduit, nozzle, substrate, worktable and cladding test specimen, is provided with substrate above worktable, and base side EDS maps has nozzle, and the surrounding of substrate is provided with liquid nitrogen conduit, and cladding test specimen is arranged in substrate.
Described laser controller and Temperature displaying and controller are industrial PC.
The beneficial effect that the utility model reaches: widened the research field of laser melting coating, differs the larger detection of this kind of laser melting coating temperature for coated material with body material thermal physical property parameter and the control of substrate temperature rise serves good effect.
Accompanying drawing explanation
Fig. 1: temperature detection and regulator control system schematic diagram; Content in Fig. 1 representated by four kinds of different arrows is as follows:
Fig. 2: protective atmosphere case internal main wants structural representation;
Fig. 3: powder feeding process schematic representation;
In figure: 1 laser apparatus, 2 laser controllers, 3 protective atmosphere casees, 4 speculums, 5 high-pressure nitrogen bottles, 6 magnetic valves, 7 vacuum jacketed flasks, 8 liquid nitrogen splitters, 9 thermopairs, 10 temperature signal amplifier, 11A/D analog to digital converter, 12 Temperature displaying and controller, 13 liquid nitrogen conduits, 14 nozzles, 15 substrates, 16 worktable, 17 molten after coating, 18 preset coatings, 19 cladding test specimens.
Embodiment
Below in conjunction with embodiment, the utility model is further described.
In the present embodiment, 5kW-CO2 laser apparatus selected by laser apparatus 1; Platinum rhodium 30-platinum thermocouple (Type B) selected by thermopair 9, and temperature signal amplifier 10 selects LM353 type signal amplifier, and HBN-AD pattern number converter selected by A/D analog to digital converter 11, and two-bit triplet formula magnetic valve selected by magnetic valve 6.
As shown in Figure 1, this device comprises laser apparatus 1, laser controller 2, protective atmosphere case 3, speculum 4, high-pressure nitrogen bottle 5, magnetic valve 6, vacuum jacketed flask 7, liquid nitrogen splitter 8, thermopair 9, temperature signal amplifier 10, A/D analog to digital converter 11 and Temperature displaying and controller 12;
The input terminus of laser controller 2 one output terminal connecting lasers 1, the front of laser apparatus 1 arranges speculum 4, another output terminal of laser controller 2 connects protective atmosphere case 3, the inner cladding test specimen 19 of protective atmosphere case 3 is connected with external heat galvanic couple 9, in order to gather substrate 15 surface and cladding test specimen 19 clad layer surface temperature signal, the signal output part of thermopair 9 connects the input terminus of temperature signal amplifier 10, the output terminal of temperature signal amplifier 10 connects the input terminus of A/D analog to digital converter 11, the defeated place end of A/D analog to digital converter 11 connects Temperature displaying and controller 12 input terminus, the output terminal of Temperature displaying and controller 12 controls the output valve of high-pressure nitrogen bottle 5 and the output valve of vacuum jacketed flask 7 by magnetic valve 6, vacuum jacketed flask 7 output valve connects the transfer valve of liquid nitrogen splitter 8, liquid nitrogen splitter 8 output terminal is to each side injection liquid mist state nitrogen of the inner cladding test specimen 19 of protective atmosphere case 3.
As shown in Figure 2; described protective atmosphere case 3 comprises liquid nitrogen conduit 13, nozzle 14, substrate 15, worktable 16 and cladding test specimen 19; worktable 16 is provided with substrate 15 above; substrate 15 side is distributed with nozzle 14; the surrounding of substrate 15 is provided with liquid nitrogen conduit 13, and cladding test specimen 19 is arranged on substrate 15.
Described laser controller 2 and Temperature displaying and controller 12 are industrial PC.
As shown in Figure 3, prepare CBN(cubic boron nitride for titanium alloy surface) rete, in this type of laser melting coating, it is a lot of that the parameter of cladding material in molten boiling point etc. will exceed substrate 15 material.In order to ensure that cladding layer material fully melts, laser apparatus 1 just need apply the laser beam compared with macro-energy density, but high energy density laser can cause again, and the temperature rise of substrate 15 is excessive even causes it to seethe with excitement, so adopt the cladding mode of presetting system on automatic powder feeding system, the absorption by preset coating 18 pairs of laser stops substrate to have high temperature rise, again by overlaying with reflection, cladding layer roughness is increased, diffuse-reflectance probability increases, and initialization layer strengthens laser induced plasma flow field, is beneficial to the fusing of CBN.
Among the process of laser melting coating, temperature signal is detected and display through thermopair, temperature signal amplifier, analog to digital converter and temperature indicator, simultaneously, the temperature of substrate 15 sample by Temperature displaying and controller 12 with magnetic valve 6, coordinating of liquid nitrogen generating unit achieve regulation and control, like this, the metallurgical rete that quality just can be had after laser cladding process comparatively good.
Among the process that laser melting coating carries out, the analog passband signal of temperature is crossed thermopair 9 and is gathered, amplify through temperature signal amplifier 10 and convert numerary signal to analog-to-digital conversion device, show over the display, the temperature of display has two values, one of them is the real-time temperature of substrate surface, and another is the real-time temperature of clad layer surface; Base reservoir temperature feedback is formed primarily of parts such as temperature regulator, liquid nitrogen generating unit, magnetic valve, liquid nitrogen splitter and nozzles with regulation system.The fusing point of substrate titanium alloy material is 1700
oc, so when detecting that substrate temperature rise reaches 1750
owhen C, controller can be opened by Controlling solenoid valve, and liquid nitrogen producer produces liquid nitrogen and lowered the temperature, when base material temperature is lower than 1750 by the basad sample of nozzle four sides applying liquid nitrogen through conduit
owhen C, controller can cut out by Controlling solenoid valve, now not basad applying liquid nitrogen.Simultaneously, this type of laser melting coating adopts the mode of preset laser cladding, substrate is stoped to have high temperature rise by preset coating to the absorption of laser and reflection, again by overlaying, cladding layer roughness is increased, diffuse-reflectance probability increases, and initialization layer strengthens laser induced plasma flow field, is beneficial to the fusing of CBN.
Claims (3)
1. laser melting coating temperature detection and a regulation device, is characterized in that: this device comprises laser apparatus, laser controller, protective atmosphere case, speculum, high-pressure nitrogen bottle, magnetic valve, vacuum jacketed flask, liquid nitrogen splitter, thermopair, temperature signal amplifier, A/D analog to digital converter and Temperature displaying and controller;
The input terminus of a laser controller output terminal connecting laser, the front of laser apparatus arranges speculum, another output terminal of laser controller connects protective atmosphere case, the cladding test specimen that protective atmosphere case inside is arranged is connected with external heat galvanic couple, the signal output part of thermopair connects the input terminus of temperature signal amplifier, the output terminal of temperature signal amplifier connects the input terminus of A/D analog to digital converter, the defeated place end of A/D analog to digital converter connects Temperature displaying and controller input terminus, the output terminal of Temperature displaying and controller is by the output valve of solenoid control high-pressure nitrogen bottle and the output valve of vacuum jacketed flask, vacuum jacketed flask output valve connects the transfer valve of liquid nitrogen splitter, liquid nitrogen splitter output terminal is to each side injection liquid mist state nitrogen of the inner cladding test specimen of protective atmosphere case.
2. laser melting coating temperature detection according to claim 1 and regulation device; it is characterized in that: described protective atmosphere case comprises liquid nitrogen conduit, nozzle, substrate, worktable and cladding test specimen; substrate is provided with above worktable; base side EDS maps has nozzle; the surrounding of substrate is provided with liquid nitrogen conduit, and cladding test specimen is arranged in substrate.
3. laser melting coating temperature detection according to claim 1 and regulation device, is characterized in that: described laser controller and Temperature displaying and controller are industrial PC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520122848.1U CN204589304U (en) | 2015-03-03 | 2015-03-03 | Laser melting coating temperature detection and regulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520122848.1U CN204589304U (en) | 2015-03-03 | 2015-03-03 | Laser melting coating temperature detection and regulation device |
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| Publication Number | Publication Date |
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| CN204589304U true CN204589304U (en) | 2015-08-26 |
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| CN201520122848.1U Expired - Fee Related CN204589304U (en) | 2015-03-03 | 2015-03-03 | Laser melting coating temperature detection and regulation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108663135A (en) * | 2018-04-20 | 2018-10-16 | 北京天海工业有限公司 | A kind of gas cylinder temperature measuring equipment and temp measuring method |
| CN111256859A (en) * | 2019-05-09 | 2020-06-09 | 清华大学 | System and method for detecting temperature of heat affected zone and storage medium |
-
2015
- 2015-03-03 CN CN201520122848.1U patent/CN204589304U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108663135A (en) * | 2018-04-20 | 2018-10-16 | 北京天海工业有限公司 | A kind of gas cylinder temperature measuring equipment and temp measuring method |
| CN111256859A (en) * | 2019-05-09 | 2020-06-09 | 清华大学 | System and method for detecting temperature of heat affected zone and storage medium |
| CN111256859B (en) * | 2019-05-09 | 2021-09-07 | 清华大学 | System and method for detecting temperature of heat affected zone and storage medium |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20160303 |
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| CF01 | Termination of patent right due to non-payment of annual fee |