CN103602951B - A kind of high temperature resistant heat treated Data Matrix code label and making method - Google Patents
A kind of high temperature resistant heat treated Data Matrix code label and making method Download PDFInfo
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Abstract
The present invention proposes a kind of high temperature resistant heat treated DM code label and making method, prepared by TC4 titanium alloy surface one deck evenly, fine and close and in conjunction with firm golden yellow ZrN coating as label, and control ZrN coat-thickness is between 1um-10um, utilize optical-fiber laser, and adopt the marking method anti-carved at ZrN coating marking one DM code, thus form high temperature resistant heat treated DM code label.This DM code is consistent with the DM code on part, and lists to part, to be heated complete after the DM code on label is transferred on part.The present invention changes existing method of carrying out Direct marking at matrix surface, adopt first at matrix surface physical deposition high-temperature resistant membrane, carry out the method for laser index carving again, the high temperature heat-resistant handling property of the DM code label that this making method is formed is greatly improved, and the method is determined for high temperature air environment, combine closely between coating and matrix, be both applicable to the destressing process of part, the timeliness being also suitable for part, temper.
Description
Technical field
The present invention relates to sign protection field, be specially a kind of high temperature resistant heat treated Data Matrix code label and making method, to realize the protection that the property distinguished lost efficacy after the thermal treatments such as high temperature solid solution, timeliness, tempering, destressing or shrend of metal material surface DM code.
Background technology
Data Matrix technology extensively applies to aviation at present, the marking field of space flight component product, but realize the whole process of part from blank to finished product and follow the trail of and remain unsolved one large problem, it is main because Direct marking is experiencing hotlist process at the DM code of piece surface, often just fail after the severe environment such as cleaning, or marking causes distinguishing impatient play at the DM code of piece surface and declines after the process of experience hotlist because of the covering of zone of oxidation, even make existing mark not readable, and hotlist process is often batch processing in actual production, this finally causes cannot distinguishing with batch part, the whole process cannot carrying out part quality is followed the trail of.For space product part, certain part material is TC4, need in process of production to carry out destressing process (destressing treatment temp 580 ° ± 15 °), and for example certain part material is 2Cr13, need in process of production to carry out temper (temper temperature is 750 ° ± 15 °), in this case, the marking method Direct marking such as laser, machinery, chemical etching, coding will lose efficacy at the DM code of material surface, even naked eyes all cannot identification, and this cannot distinguish causing this part of same batch processed after solution treatment.
Therefore, realize Direct marking still can effectively distinguish after the various hotlist process of experience at metal parts surface DM code, being realize the key that product processes the uninterrupted information acquisition of whole process and real-time tracing from blank to finished product, is the basis realizing metallic element lifecycle management.
The existing piece surface DM code means of defence principle for hotlist process mainly comprises: directly cast out by DM code on the surface of part in the process adopting the method for investment cast to produce at part; With Clear coating, two-dimensional bar code identified areas is protected to strengthen the resistibility of piece surface Quick Response Code to severe environment, and carry out the two dimension code reading research under Clear coating; Carry out the micro-milling of the degree of depth at piece surface and form contrast gradient good Quick Response Code, the method can make Quick Response Code still have higher contrast gradient after experience thermal treatment etc. comparatively rugged environment, thus increases piece surface Quick Response Code to heat treated resistivity.According to current research, these methods have lower column defects when applying:
1, the piece surface method of investment cast DM code, really can realize for the method for part high-temperature heat treatment to DM code, but the method will change the complete processing of part or need to reserve special technique edges to meet the requirement of DM code investment cast at piece surface, this needs a large amount of engineering change (EC)s.In addition, the DM code of two dimension need convert to and for the three-dimensional data of CAD software identification to realize investment cast, can realize comparatively bothering, and need add special equipment by the method.
Although its solidity to corrosion of Quick Response Code 2, under piece surface Clear coating protective membrane can be improved, under transparent layer, the recognition of Quick Response Code is the bottleneck place of the method, and under transparent layer, the recognition of Quick Response Code exists problems at present.Secondly, transparent layer in high temperature environments often sex change even gasify, thus lose provide protection.
3, piece surface carries out the Quick Response Code that the micro-milling of the degree of depth formed and does not have good resistibility higher than the thermal treatment such as tempering, quenching, timeliness of 500 ° to temperature, but the method can sharply decline along with its effect of continuous rising of thermal treatment temp, and the method to be proved to be when carrying out temperature and being 750 ° ± 15 ° of temper be lost efficacy.Secondly piece surface often has the requirement such as size, roughness, is satisfied recognition requirement and carry out the micro-milling of the degree of depth and often require to produce with the size, roughness etc. of piece surface and conflict.
4, these methods are realize DM code by the marking mode of change piece surface Quick Response Code to protect in hotlist treating processes mostly, but marking mode is limited often in production process, these methods are invalid to marking in the protection of the DM code of piece surface for severe environment such as high-temperature heat treatment.
The above-mentioned defect of existing method; add that the requirement of the use properties of technical requirements in the part course of processing and part proposes a difficult problem to marking in the safeguard procedures of piece surface DM code; how to ensure that safeguard procedures can be effective all the time to the protection of Quick Response Code in whole heat treatment environment, how to ensure that still can effectively distinguish after thermal treatment Quick Response Code is the key ensureing part uninterrupted information acquisition and real-time tracing in hotlist treating processes.
In order to realize the protection to piece surface DM code in hotlist treating processes in practical application; often adopt method of lacquering; such as in the anodizing process of aluminum alloy part; first evenly apply the red paint of one deck chlorinated polyvinyl chloride in identified areas and dry in natural air; then carry out anodizing, being torn by this layer of paint after treating anodizing is exposed to DM code within readable visual line of sight again again.If this method is applied in the DM code of laser Direct marking on stainless steel, titanium alloy component surface will there is following drawback with the DM code protection realized for high-temperature heat treatment: one, coating routine paint then its generally higher than 200 ° environment decline be vaporized cannot realize protection effect, apply high temperature resistant organic varnish, then after carrying out high-temperature heat treatment, high temperature resistant organic varnish will be difficult to removal makes DM code again expose; Its two, even if the party can make DM code again expose after being removed by heat resistance paint, the DM code under paint often because paint sex change at high temperature and with the bonding of matrix and paint is removed endless, cause residual contaminants DM code, make it be difficult to distinguish; Its three, high temperature resistant organic varnish price is often higher, and the not reproducible use of the method, and economical effectiveness is not good.
Summary of the invention
The technical problem solved
For solving prior art Problems existing, the present invention proposes a kind of high temperature resistant heat treated DM code label and making method, its objective is the thinking from improving DM code resistance to elevated temperatures, make a kind of resistant to elevated temperatures label and part is listed one by one, solve tempering, cause the DM code of Direct marking on stainless steel components surface fuzzy because heat-treatment oxidation layer covers the module caused after the high-temperature heat treatment such as destressing, unintelligible, even code district data such as to lose completely at the problem, the DM code retell after to be heated on label transfers to piece surface, piece surface DM code can effectively be remedied after heat treatment, realize part uninterrupted information acquisition and tracking in process of production.
Technical scheme
The present invention just solves the technical scheme Integral Thought that its technical problem adopts: prepare on TC4 titanium alloy surface one deck evenly, fine and close and in conjunction with firm golden yellow ZrN coating as label, and control ZrN coat-thickness is between 1um-10um, utilize optical-fiber laser, and adopt the marking method anti-carved at ZrN coating marking one DM code, thus form high temperature resistant heat treated DM code label.This DM code is consistent with the DM code on part, and lists to part, to be heated complete after the DM code on label is transferred on part.
Technical scheme of the present invention is:
Described one is high temperature resistant heat treated Data Matrix code label, it is characterized in that: be made up of substrate layer and coating, substrate layer material is TC4, and coating material is ZrN; Label thickness is 0.5mm-2mm; There is identified areas at sign surface, outreach hole and reuse clear area; Identified areas comprises Quick Response Code district and plain code district.
Described one is high temperature resistant heat treated Data Matrix code label, is characterized in that: label outreaches 4 times that hole width between centers label Edge Distance is at least label thickness, and identified areas is at least 4 times of label thickness apart from label Edge Distance; Identified areas area is not less than 15mm*20mm, at least at a distance of 2mm between plain code district and Quick Response Code district.
The making method of described a kind of high temperature resistant heat treated Data Matrix code label, is characterized in that: adopt following steps:
Step 1: base material prepares: prepare the titanium alloy plate that the trade mark is TC4, obtain by mechanical workout the TC4 titanium-alloy thin-plate that thickness is 0.5mm ~ 2mm; TC4 titanium-alloy thin-plate Quick Response Code index face is polished step by step, makes its surface roughness Ra≤0.8;
Step 2: base material cleans: the TC4 titanium-alloy thin-plate obtained step 1 carries out degreasing, etch descaling and cleaning, oven dry successively;
Step 3: processing physical deposition ZrN plated film on the TC4 titanium-alloy thin-plate obtained through step 2;
Step 4: the TC4 titanium-alloy thin-plate after processing through step 3 bores and outreaches hole, and carry out laser index carving, concrete steps are:
Step 4.1: direction marking gasification ZrN layer: with laser marking machine, the identified areas marking DM code on the TC4 plate being coated with ZrN, marking method is direction marking;
Step 4.2: oppositely marking ablation TC4 layer: fixing TC4 titanium-alloy thin-plate, at the invariant position of laser work platform, changes laser index carving processing parameter and carries out laser ablation to the TC4 layer exposed, forms the DM code of high recognition quality;
Step 4.3: plain code marks: about 2mm place below DM code, the plain code corresponding to marking DM code;
Step 4.4: label complete for marking is carried out at least 5min ultrasonic cleaning in water, then uses air brush outwash sign surface, is finally left standstill by label air-dry in atmosphere.
The making method of described a kind of high temperature resistant heat treated Data Matrix code label, is characterized in that: the base material cleaning step in step 2 is:
Step 2.1: adopt trieline as degreasing solvent, at room temperature carry out skimming treatment to the TC4 titanium-alloy thin-plate that step 1 obtains, degreasing time is 20min;
Step 2.2: adopt chemical erosion to carry out descaling process to the TC4 titanium-alloy thin-plate after step 2.1 process, wherein scavenging solution formula is: the HNO of HF, 100mL 65% of 50mL 40%
3, 100mL hydrogen peroxide; The working temperature of chemical erosion is room temperature, and erosion time is 5min-10min;
Step 2.3: the TC4 titanium-alloy thin-plate after step 2.2 processes is placed in acetone, carries out the ultrasonic cleaning of 10min, then alcohol rinsing, finally dries up TC4 titanium-alloy thin-plate with air brush.
The making method of described a kind of high temperature resistant heat treated Data Matrix code label, is characterized in that: the physical deposition ZrN plating steps in step 3 is:
Step 3.1: prepare before plating: the Zr target acetone of 99.9% is soaked 15min ~ 20min, then uses washes of absolute alcohol post-drying;
Step 3.2: TC4 titanium-alloy thin-plate is placed on vacuum oven suspension, Zr target after step 3.1 processes also puts into vacuum oven, adjustment target-substrate distance 60mm ~ 80mm, TC4 titanium-alloy thin-plate temperature controls between 100 ° ~ 400 °, and vacuumizes vacuum oven;
Step 3.3: sputter coating: when vacuum oven vacuum tightness is 5*10
-3during Pa, in stove, pass into argon gas Glow Discharge Cleaning 20-30min, then pressure regulation to 3.0 × 10
-3pa carries out main bombardment, and adds N
2gas, N
2control at 1:14 with argon flow amount, then pressure regulation is to 0.28Pa ~ 0.3Pa, bias voltage control is at 150V ~ 300V, and target current density domination, at 50mA ~ 80mA, deposits, and depositing time is 30-90min, and deposit thickness is 1um-10um.
The making method of described a kind of high temperature resistant heat treated Data Matrix code label, it is characterized in that: the laser index carving processing parameter adopted in step 4.1 is: laser power 4W ~ 4.2W, marking speed 500mm/s ~ 540mm/s, Q frequency 35KHz ~ 40KHz, spacing 0.1mm ~ 0.12mm filled by line, indentation 0.055mm ~ 0.06mm, marking number of times is 3-5 time; The laser index carving processing parameter adopted in step 4.2 is: laser power 7W ~ 8W, marking speed 100mm/s ~ 150mm/s, Q frequency 20KHz ~ 22KHz, and line fills spacing 0.02mm ~ 0.032mm, indentation-0.018mm ~ 0.28mm, and marking number of times is 1 time; The laser technical parameters that in step 4.3, marking plain code adopts is identical with the marking of DM code;
Beneficial effect
Beneficial effect of the present invention comprises label design design effect and making method effect, specific as follows:
The effect of the structure design of high temperature resistant heat treated Data Matrix code label:
1) design in hole is outreached, outreach hole by steel wire or other thin club-shaped materials, label and part to be coupled together and one_to_one corresponding, after part and label are together heat-treated, can ensure the mark on label successfully to be transferred to the failed piece surface of mark.
2) design in plain code district, improves the identifiability of label.The assisted reading function of plain code, to some extent solves DM code and caused because Special Circumstances lost efficacy the problem that machine cannot be distinguished.
3) reuse the design of clear area, the design reusing clear area increases the size of label to a certain extent, but to reuse clear area be utilizable.After label uses, laser ablation is carried out to identified areas original DM code was lost efficacy, so just can set up new tag slot reusing clear area, improve the utilization ratio of label.
The effect of the making method of high temperature resistant heat treated Data Matrix code label:
1) change existing method of carrying out Direct marking at matrix surface, adopt first at matrix surface physical deposition high-temperature resistant membrane, then carry out the method for laser index carving.Study through contriver, the selection of base material and coating material is the key of label resistance to elevated temperatures, because ZrN itself has good resistance to elevated temperatures, and can be formed on TC surface by physical deposition that matrix combines closely, firmly coating, therefore, the TC4 titanium alloy surface deposition ZrN film good in pre-treatment carries out laser index carving DM code again, both easily obtains realization, and making again label still can effectively distinguish after the thermal treatments such as manager high tempering, destressing, shrend becomes possibility.Meanwhile, when physical deposition Rational Parameters, the ZrN formed is combined with matrix closely, coating porosity reduces greatly, the possibility corroded by oxygen under reducing hot environment.Finally, when laser index carving processing parameter arranges reasonable, on the TC4 titanium-alloy thin-plate being coated with ZrN, contrast gradient can be obtained by laser index carving and be 100% and total quality grade is that A is (according to standard A IM-DPM-1-2006, by bar code tester, quality indicator acquisition is carried out to DM code) dimpling shape DM code, further ensure the high temperature heat-resistant handling property of label.So the high temperature heat-resistant handling property of the DM code label that this making method is formed is greatly improved.
2) because this making method is determined for high temperature air environment, and combine closely between coating and matrix, therefore its scope of application is comparatively wide, has both gone for the destressing process of part, the timeliness that can also be suitable for part, temper, and can also adapt to the process such as shrend, oil quenching.
3) the method makes that high temperature heat-resistant process DM code label process is simple, strong operability, and the efficiency made relative to other heat resisting markings improves greatly.
Accompanying drawing explanation
Fig. 1 is the basic flow sheet of technical solution of the present invention
Fig. 2 is the contour structures view of label of the present invention
In Fig. 3 example 1, label gets on the DM code labeling before stress thermal treatment
DM code labeling in Fig. 4 example 1 on part before destressing thermal treatment
In Fig. 5 example 1, label gets on the DM code labeling after stress thermal treatment
DM code labeling in Fig. 6 example 1 on part after destressing thermal treatment
Label burning hot DM code labeling before treatment last time in Fig. 7 example 2
Part burning hot DM code labeling before treatment last time in Fig. 8 example 2
In Fig. 9 example 2 label intimately to process last time after DM code labeling
DM code labeling in Figure 10 example 2 on part after tempering heat treatment
Embodiment
Below in conjunction with specific embodiment, the present invention is described:
Embodiment 1:
The present embodiment select the trade mark be the titanium alloy plate of TC4 as base material, ZrN is as coating.
Step 1: base material prepares:
Step 1.1: prepare the titanium alloy plate that the trade mark is TC4, it is 80mm that plate is become a length by mechanical workout, and wide is 60mm, and thickness is the TC4 titanium alloy rectangle thin plate of 1mm.
Step 1.2: TC4 titanium alloy rectangle thin plate Quick Response Code index face emery paper is polished step by step, ensures its surface roughness Ra=0.8.
Step 2: base material cleans, and mainly comprises following sub-step:
Step 2.1: degreasing: carry out skimming treatment to by step 1 ready TC4 titanium alloy rectangle thin plate, degreasing time is 20min, and working temperature is room temperature, and degreasing solvent is trieline.
Step 2.2: etch descaling: adopt chemical erosion to carry out descaling process to TC4 titanium alloy rectangle thin plate, wherein scavenging solution formula: the HF of 40%, 50mL; The HNO of 65%
3, 100mL; Hydrogen peroxide, 100mL.Working temperature is room temperature, and erosion time is 8min.
Step 2.3: cleaning, oven dry: the ultrasonic cleaning of the TC4 titanium alloy rectangle thin plate after step 2.2 processes being carried out in acetone to 10min, remove chemical residual liquid, then alcohol rinsing, finally dries up base material with air brush.
Step 3: physical deposition plating ZrN film, mainly comprises following sub-step:
Step 3.1: prepare before plating: the Zr target (specification is the bar of 50mm) by 99.9% soaks 20min with acetone, then uses washes of absolute alcohol, dry for standby.
Step 3.2: vacuum chamber prepares: comprise the inspections such as vacuum chamber clean, connection and resistance to air loss.Be suspended on vacuum oven suspension by TC4 titanium alloy rectangle thin plate, the Zr target after step 3.1 processes also puts into vacuum oven, and target-substrate distance 60mm, TC4 titanium alloy rectangle slab temperatures controls at 100 °, and dynamic change is ± 10 °, and vacuumizes vacuum oven.
Step 3.3: sputter coating: when vacuum oven vacuum tightness is 5*10
-3during Pa, pass into argon gas Glow Discharge Cleaning 20min, then pressure regulation to 3.0 × 10
-3pa carries out main bombardment, and adds N
2gas, N
2control at 1:14 with argon flow amount, then pressure regulation is to 0.28Pa, bias voltage control is at 160V, and target current density domination, at 60mA, deposits, and depositing time is 90min.
Step 4: the TC4 titanium alloy rectangle thin plate after processing through step 3 outreaches the through hole that a 2mm is bored in hole site, and carry out laser index carving, concrete steps are:
Step 4.1: direction marking gasification ZrN layer: with big nation YLP-D10 laser marking machine, identified areas marking on the TC4 plate being coated with ZrN layer size is the DM code of 6mm*6mm, code word content is " 30Q324343430794<OQQ ", and error correcting system adopts ECC200.Marking method is direction marking.The laser index carving processing parameter adopted is: laser power 4W, marking speed 500mm/s, Q frequency 40KHz, and line fills spacing 0.1mm, indentation 0.055mm, and marking number of times is 4 times.
Step 4.2: oppositely marking ablation TC4 layer: after step 4.1 completes, fixing TC4 titanium alloy rectangle thin plate is at the invariant position of laser work platform, only change laser index carving processing parameter and laser ablation is carried out to the TC4 layer exposed, thus form the DM code of high recognition quality.The laser index carving processing parameter adopted is: laser power 7.5W, marking speed 100mm/s, Q frequency 20KHz, and line fills spacing 0.03mm, indentation 0.25mm, and marking number of times is 1 time.
Step 4.3: plain code marks: about 2mm place below the DM code of TC4 titanium alloy rectangle thin plate, carry out mark plain code, plain code character string is " 30Q324343430794<OQQ ", and the laser technical parameters that plain code marking adopts is identical with the marking of DM code.
Step 4.4: label complete for marking is carried out at least 5min ultrasonic cleaning in water, then uses air brush outwash sign surface, finally label is left standstill at least 0.5h in atmosphere, carries out air-dry.
According to AIM-DPM-1-2006 standard, with " Microscan " bar code tester, quality indicator is carried out to the DM code labeling (as shown in Figure 3) on label in the present embodiment and the DM code labeling (as shown in Figure 4) directly formed at titanium alloy surface laser index carving, and how depending on " DataMan7500 " scanner, two kinds of marks to be distinguished respectively by health, its qualitative data is as shown in table 1.
Table 1
Arrange titanium alloy destressing testing circumstance by titanium alloy heat treatment process specification, basic setup is: hot stove is heated to 580 ° by room temperature, and constant temperature (temperature difference be no more than ± 15 °) keeps 120min, and then air cooling is to room temperature.Label and part are together placed in testing circumstance and carry out destressing heat treatment test.After destressing heat treatment test, label and part taking-up acetone are cleaned, then alcohol rinsing, finally leaving standstill at least 0.5h at air makes it dry, the DM code labeling on label of the present invention as shown in Figure 5, laser Direct marking titanium alloy surface DM code labeling as shown in Figure 6.
Result shows, after destressing heat treatment experiment, DM code labeling on label of the present invention all can be correctly decoded at bar code tester and bar code scan rifle, and the DM code labeling on part cannot be distinguished with bar code scan rifle, cannot check especially under bar code tester, the qualitative data of the two is as shown in table 2.
Table 2
Embodiment 2:
The present embodiment select the trade mark be the titanium alloy plate of TC4 as base material, ZrN is as coating.
Step 1: base material prepares:
Step 1.1: prepare the titanium alloy plate that the trade mark is TC4, it is 80mm that plate is become a length by mechanical workout, and wide is 60mm, and thickness is the TC4 titanium alloy rectangle thin plate of 2mm.
Step 1.2: TC4 titanium alloy rectangle thin plate Quick Response Code index face emery paper is polished step by step, ensures its surface roughness Ra=0.6.
Step 2: base material cleans, and mainly comprises following sub-step:
Step 2.1: degreasing.Carry out skimming treatment to by step 1 ready TC4 titanium alloy rectangle thin plate, degreasing time is 20min, and working temperature is room temperature, and degreasing solvent is trieline.
Step 2.2: etch descaling.Chemical erosion is adopted to carry out descaling process to TC4 titanium alloy rectangle thin plate.Scavenging solution is filled a prescription: the HF of 40%, 50mL; The HNO of 65%
3, 100mL; Hydrogen peroxide, 100mL.Working temperature is room temperature, and erosion time is 8min.
Step 2.3: cleaning, oven dry.TC4 titanium alloy rectangle thin plate after step 2.2 processes is carried out in acetone to the ultrasonic cleaning of 10min, remove chemical residual liquid, then alcohol rinsing, finally dries up base material with air brush.
Step 3: physical deposition plating ZrN film, mainly comprises following sub-step:
Step 3.1: prepare before plating.Zr target (specification is the bar of 50mm) by 99.9% soaks 15min with acetone, then uses washes of absolute alcohol, dry for standby.
Step 3.2: vacuum chamber prepares.Comprise the inspections such as vacuum chamber clean, connection and resistance to air loss.Be suspended on vacuum oven suspension by TC4 titanium alloy rectangle thin plate, the Zr target after step 3.1 processes also puts into vacuum oven, and target-substrate distance 70mm, TC4 titanium alloy rectangle slab temperatures controls at 150 °, and dynamic change is ± 10 °, and vacuumizes vacuum oven.
Step 3.3: sputter coating.When vacuum oven vacuum tightness is 5*10
-3during Pa, pass into argon gas Glow Discharge Cleaning 20min, then pressure regulation to 3.0 × 10
-3pa carries out main bombardment, and adds N
2gas, N
2control at 1:14 with argon flow amount, then pressure regulation is to 0.28Pa, bias voltage control is at 150V, and target current density domination, at 80mA, deposits, and depositing time is 90min.
Step 4: outreach hole with what the TC4 titanium-alloy thin-plate of drill after processing through step 3 bores a 2mm, and carry out laser index carving, concrete steps are:
Step 4.1: direction marking gasification ZrN layer.With big nation YLP-D10 laser marking machine, the size of the identified areas marking on the TC4 plate being coated with ZrN layer is the DM code of 6mm*6mm, and code word content is " 30Q324343430794<OQQ ", and error correcting system adopts ECC200.Marking method is direction marking.The laser index carving processing parameter adopted is: laser power 4W, marking speed 540mm/s, Q frequency 38KHz, and line fills spacing 0.1mm, indentation 0.058mm, and marking number of times is 5 times.
Step 4.2: oppositely marking ablation TC4 layer.After step 4.1 completes, fixing TC4 titanium alloy rectangle thin plate, at the invariant position of laser work platform, only changes laser index carving processing parameter and carries out laser ablation to the TC4 layer exposed, thus forms the DM code of high recognition quality.The laser index carving processing parameter adopted is: laser power 7.8W, marking speed 100mm/s, Q frequency 22KHz, and line fills spacing 0.032mm, indentation 0.26mm, and marking number of times is 1 time.
Step 4.3: plain code marks.Below the DM code of TC4 titanium alloy rectangle thin plate, about 2mm place, carries out mark plain code, and plain code character string is " 30Q324343430794<OQQ ", and the laser technical parameters that plain code marking adopts is identical with the marking of DM code.
Step 5.4: label complete for marking is carried out at least 5min ultrasonic cleaning in water, then uses air brush outwash sign surface, finally leaves standstill at least 0.5h in atmosphere to label, carries out air-dry.
According to AIM-DPM-1-2006 standard, with " Microscan " bar code tester, quality indicator is carried out to the DM code labeling (as shown in Figure 7) on label in the present embodiment and the DM code labeling (as shown in Figure 8) directly formed at 2Cr13 steel surface laser index carving, and how depending on " DataMan7500 " scanner, two kinds of marks to be distinguished respectively by health, its qualitative data is as shown in table 3.
Table 3
By stainless steel hot treatment process criterion settings 2Cr13 backfire test environment, basic setup is: hot stove is heated to 750 ° by room temperature, and constant temperature (temperature difference be no more than ± 15 °) keeps 90min, and then oil cooling is to room temperature.Label and part are together placed in testing circumstance and carry out destressing heat treatment test.After destressing heat treatment test, label and part taking-up acetone are cleaned, then alcohol rinsing, finally leaving standstill at least 0.5h at air makes it dry, the DM code labeling on label of the present invention as shown in Figure 9, laser Direct marking titanium alloy surface DM code labeling as shown in Figure 10.
Result shows, after past tempering heat treatment experiment, DM code labeling on label of the present invention all can be correctly decoded at bar code tester and bar code scan rifle, and the DM code labeling on part cannot be distinguished with bar code scan rifle, cannot check especially under bar code tester, the qualitative data of the two is as shown in table 4.
Table 4
Claims (6)
1. a high temperature resistant heat treated Data Matrix code label, it is characterized in that: be made up of substrate layer and coating, substrate layer material is TC4, and coating material is ZrN; Label thickness is 0.5mm-2mm; There is identified areas at sign surface, outreach hole and reuse clear area; Identified areas comprises Quick Response Code district and plain code district.
2. a kind of high temperature resistant heat treated Data Matrix code label according to claim 1, is characterized in that: label outreaches 4 times that hole width between centers label Edge Distance is at least label thickness, and identified areas is at least 4 times of label thickness apart from label Edge Distance; Identified areas area is not less than 15mm*20mm, at least at a distance of 2mm between plain code district and Quick Response Code district.
3. a making method for high temperature resistant heat treated Data Matrix code label according to claim 1, is characterized in that: adopt following steps:
Step 1: base material prepares: prepare the titanium alloy plate that the trade mark is TC4, obtain by mechanical workout the TC4 titanium-alloy thin-plate that thickness is 0.5mm ~ 2mm; TC4 titanium-alloy thin-plate Quick Response Code index face is polished step by step, makes its surface roughness Ra≤0.8;
Step 2: base material cleans: the TC4 titanium-alloy thin-plate obtained step 1 carries out degreasing, etch descaling and cleaning, oven dry successively;
Step 3: processing physical deposition ZrN plated film on the TC4 titanium-alloy thin-plate obtained through step 2;
Step 4: the TC4 titanium-alloy thin-plate after processing through step 3 bores and outreaches hole, and carry out laser index carving, concrete steps are:
Step 4.1: direction marking gasification ZrN layer: with laser marking machine, the identified areas marking DM code on the TC4 plate being coated with ZrN, marking method is direction marking;
Step 4.2: oppositely marking ablation TC4 layer: fixing TC4 titanium-alloy thin-plate, at the invariant position of laser work platform, changes laser index carving processing parameter and carries out laser ablation to the TC4 layer exposed, forms the DM code of high recognition quality;
Step 4.3: plain code marks: the plain code below DM code corresponding to marking DM code, at least at a distance of 2mm between DM code and plain code;
Step 4.4: label complete for marking is carried out at least 5min ultrasonic cleaning in water, then uses air brush outwash sign surface, is finally left standstill by label air-dry in atmosphere.
4. the making method of a kind of high temperature resistant heat treated Data Matrix code label according to claim 3, is characterized in that: the base material cleaning step in step 2 is:
Step 2.1: adopt trieline as degreasing solvent, at room temperature carry out skimming treatment to the TC4 titanium-alloy thin-plate that step 1 obtains, degreasing time is 20min;
Step 2.2: adopt chemical erosion to carry out descaling process to the TC4 titanium-alloy thin-plate after step 2.1 process, wherein scavenging solution formula is: the HNO of HF, 100mL 65% of 50mL 40%
3, 100mL hydrogen peroxide; The working temperature of chemical erosion is room temperature, and erosion time is 5min-10min;
Step 2.3: the TC4 titanium-alloy thin-plate after step 2.2 processes is placed in acetone, carries out the ultrasonic cleaning of 10min, then alcohol rinsing, finally dries up TC4 titanium-alloy thin-plate with air brush.
5. the making method of a kind of high temperature resistant heat treated Data Matrix code label according to claim 3, is characterized in that: the physical deposition ZrN plating steps in step 3 is:
Step 3.1: prepare before plating: the Zr target acetone of 99.9% is soaked 15min ~ 20min, then uses washes of absolute alcohol post-drying;
Step 3.2: TC4 titanium-alloy thin-plate is placed on vacuum oven suspension, Zr target after step 3.1 processes also puts into vacuum oven, adjustment target-substrate distance 60mm ~ 80mm, TC4 titanium-alloy thin-plate temperature controls between 100 ° ~ 400 °, and vacuumizes vacuum oven;
Step 3.3: sputter coating: when vacuum oven vacuum tightness is 5*10
-3during Pa, in stove, pass into argon gas Glow Discharge Cleaning 20-30min, then pressure regulation to 3.0 × 10
-3pa carries out main bombardment, and adds N
2gas, N
2control at 1:14 with argon flow amount, then pressure regulation is to 0.28Pa ~ 0.3Pa, bias voltage control is at 150V ~ 300V, and target current density domination, at 50mA ~ 80mA, deposits, and depositing time is 30-90min, and deposit thickness is 1um-10um.
6. the making method of a kind of high temperature resistant heat treated Data Matrix code label according to claim 3, it is characterized in that: the laser index carving processing parameter adopted in step 4.1 is: laser power 4W ~ 4.2W, marking speed 500mm/s ~ 540mm/s, Q frequency 35KHz ~ 40KHz, spacing 0.1mm ~ 0.12mm filled by line, indentation 0.055mm ~ 0.06mm, marking number of times is 3-5 time; The laser index carving processing parameter adopted in step 4.2 is: laser power 7W ~ 8W, marking speed 100mm/s ~ 150mm/s, Q frequency 20KHz ~ 22KHz, and line fills spacing 0.02mm ~ 0.032mm, indentation-0.018mm ~ 0.28mm, and marking number of times is 1 time; The laser technical parameters that in step 4.3, marking plain code adopts is identical with the marking of DM code.
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