CN105369259A - Machining method for nut plate - Google Patents
Machining method for nut plate Download PDFInfo
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- CN105369259A CN105369259A CN201510795385.XA CN201510795385A CN105369259A CN 105369259 A CN105369259 A CN 105369259A CN 201510795385 A CN201510795385 A CN 201510795385A CN 105369259 A CN105369259 A CN 105369259A
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Abstract
The invention relates to a machining method for a nut plate and belongs to the field of machining of alloy materials. The machining method includes the following steps that pretreatment is carried out, and quenching and tempering are carried out on high-strength alloy steel; heat treatment is carried out, the quenched and tempered high-strength alloy steel is forged and formed at the temperature of 1150-1220 DEG C, heat preservation is conducted for 0.3-0.6 h, quenching treatment is carried out by means of forging waste heat, the high-strength alloy steel is immediately water-cooled to the room temperature when cooled to 900 DEG C, the high-strength alloy steel is heated to 450-520 DEG C to be subjected to tempering for 2-3 h, finally the high-strength alloy steel is oil-cooled to the room temperature, and a semi-finished nut plate is obtained; and surface treatment is carried out, the semi-finished nut plate is sequentially subjected to oil and rust removal, activating treatment, blackening and passivation, and the nut plate is obtained. According to the nut plate, the high-strength alloy steel with components combined reasonably is selected to be subjected to quenching and tempering, forging, quenching, tempering and surface blackening, so that the machining cycle is greatly shortened, and the strength, hardness, toughness, corrosion resistance and abrasion resistance of the nut plate are greatly improved; meanwhile, the machining performance of the nut plate is improved, and the nut plate is easy to weld.
Description
Technical field
The present invention relates to a kind of working method of fastening piece, be specifically related to a kind of working method of nutplate, belong to the manufacture field of alloy material.
Background technology
Vehicle body is the important assembly of vehicle complete vehicle, and the quality of automobile body welding quality directly affects the work-ing life of car load.Weldprocedure in automobile making comprises spot welding, projection welding, arc-welding, arc stud welding, Laser Welding, laserHybrid welding etc.Projection welding is the one distortion of spot welding.Along with the develop rapidly of automotive industry, high-level efficiency, personalized demand are more and more obvious, in the manufacturing processed of body in white, adopt projection welding process welded nut can the accurately welding position of setscrew nut, lifting welding quality, relative to CO
2shielded welding more can reduce the injury of obnoxious flavour to human body, is already widely used in garage.Along with the increase of vehicle safety and energy-conserving and environment-protective demand, constantly increase vehicle body loss of weight demand, the application of high strength alloy steel on vehicle body also constantly increases.Body lightening has become the developing direction of future automobile industry, and increase armor plate strength and high strength alloy steel usage quantity are one of important channels of body lightening.The application of high strength alloy steel makes not prison welding defect in nut projection welding process increase, and not prison welding is mainly manifested in the stripping moment of torsion that nut does not reach requirement, not easily welds.
Summary of the invention
The present invention is directed to the defect existing for prior art, a kind of working method of nutplate is provided, process the nutplate good mechanical property obtained, there is higher intensity, hardness, and easily weld.
Above-mentioned purpose of the present invention can be implemented by the following technical programs: a kind of nutplate, described nutplate comprises main body, boss, pilot hole, described boss is symmetricly set on close end place, main body two ends, the quantity of described pilot hole is even number, and be symmetricly set on body surfaces, described main body axis place is provided with hollow, described nutplate is processed by high strength alloy steel, described nutplate high strength alloy steel is grouped into by the one-tenth of following mass percent: C:0.02%-0.10%, Si:0.05%-0.30%, Mn:0.20%-0.50%, Al:0.15%-1.20%, Cr:0.50%-1.20%, V:0.003%-0.01%, B:0.08%-0.20%, Ti:0.01%-0.03%, S≤0.035%, P≤0.035%, all the other are Fe.
In the steel that the present invention uses, C content is 0.15-0.20%, a kind of soft steel, plasticity and toughness better, hardening capacity is higher, after quenching, there is hard and wear-resisting surface and tough and tensile heart portion, so have the good processibility of higher low-temperature impact toughness, and machining deformation is small, and anti-fatigue performance is fairly good.In nutplate high strength alloy steel of the present invention, if carbon content is too high, the toughness in steel alloy mother metal heart portion can be caused to decline, so C content is 0.15-0.20% by the present invention, thus ensure that there are enough plasticity and toughness in the heart portion of steel alloy.Because the intensity of soft steel and hardness can be relatively low, the present invention suitably adds the content of Mn, to improve intensity and the hardness of steel alloy.Meanwhile, also simultaneously containing Ti, V two kinds of trace elements in steel of the present invention, play synergy with Mn element, common intensity and the hardness improving steel alloy.Because Ti, V trace element not only can crystal grain thinning, can also obtain the Dispersed precipitate Ti (C, N) of more high-volume fractional, (C, N), and V (C, N) precipitate particle, therefore, can play the effect of refined crystalline strengthening and dispersion-strengthened simultaneously.
On the other hand, carbon equivalent affects element M n and there is enrichment phenomenon in the 0-60nm degree of depth, and especially in the 0-20nm degree of depth, enrichment is more obvious, and Mn constituent content peak value can reach 12%, is 8.5 times of content in mother metal.Mn element significantly improves top layer carbon equivalent in the enrichment on surface, and top layer welding property is sharply worsened.It can thus be appreciated that, the enrichment of top layer alloying element Mn is the major cause causing high strength alloy steel not easily to weld, therefore, the content of Mn strictly controls at 0.20%-0.50% by nutplate high strength alloy steel of the present invention, and then control Mn is in process of production in the enrichment on high strength alloy steel surface.In addition, Mn element also plays synergy with Cr, Ni, V, B tetra-kinds of elements of containing in steel, improves the hardening capacity of steel, thus improves intensity and the toughness in the heart portion of steel after making steel heat treatment.
Although silicon (Si) has slight strengthening effect, also the toughness of steel can slightly be improved, when working with the molybdenum one in steel alloy, better effects if, but excessive silicon can have a strong impact on the welding property of steel, meanwhile, the present invention additionally with the addition of 0.15%-1.20%Al in order to crystal grain thinning, produce with silicon and act synergistically, improve the impelling strength of nutplate further.
Due to the change of chemical composition, its microstructure also changes, and nutplate of the present invention not only has higher intensity and hardness, also has higher plasticity and toughness, and significantly improves the processing characteristics of nutplate, makes it easily weld.
In above-mentioned nutplate, end, described main body two ends is pointed.
In above-mentioned nutplate, described pointed top is circular arc.
In above-mentioned nutplate, described pilot hole is counterbore or through hole.By arranging accurate pilot hole, make this nutplate in use, convenient location, can use more accurately.
In above-mentioned nutplate, as preferably, described nutplate high strength alloy steel is grouped into by the one-tenth of following mass percent: C:0.04%-0.08%, Si:0.08%-0.25%, Mn:0.25%-0.40%, Al:0.30%-1.00%, Cr:0.60%-0.80%, V:0.008%-0.01%, B:0.10%-0.16%, Ti:0.015%-0.025%, S≤0.035%, P≤0.035%, all the other are Fe.
The working method also providing a kind of above-mentioned nutplate of the present invention, described working method comprises the steps:
Pre-treatment: the high strength alloy steel of such as above-mentioned moiety is carried out modifier treatment;
Thermal treatment: by the forging molding at 1150-1220 DEG C of the high strength alloy steel after modifier treatment, insulation 0.3-0.6h, then quench treatment is carried out with residual forging heat, when temperature is cooled to 900 DEG C immediately water-cooled to room temperature, then be heated to 450-520 DEG C and carry out temper 2-3h, last oil cooling, to room temperature, obtains nutplate work in-process;
Surface treatment: nutplate work in-process are carried out degreasing and rust removal, activation treatment, blackening process, Passivation Treatment successively, can obtain nutplate finished product.
In prior art, the working method of nutplate is nearly all first forge, then normalizing treatment, quench treatment, last temper, and this process cycle is long, complicated operation, can not meet the requirement of day by day increasing.Nutplate in the present invention, first by high strength alloy steel through modifier treatment, then forging molding, and utilize the waste heat of forging to carry out the thermal distortion of quench treatment immediately, finally carries out temper.The present invention not only increases the tensile strength of 40-60% by the nutplate that above-mentioned working method obtains, and improves the plasticity of 35-45%, improves the toughness of 15-30%, and eliminates high temperature and reheat operation, highly shortened the cycle, increases economic efficiency.
In the working method of above-mentioned nutplate, the temperature of described modifier treatment is 880-940 DEG C, insulation 1-2h.
In the working method of above-mentioned nutplate, the speed of described water-cooled is 15-25 DEG C/min, and the speed of described oil cooling is 16-22 DEG C/min.The control of speed of cooling, in above-mentioned scope, further increases tensile strength and the hardness of nutplate, and improves the impelling strength of nutplate and stablize its impelling strength.
In the working method of above-mentioned nutplate, the temperature of degreasing and rust removal process is 30-50 DEG C, and the treatment time is 5-10min, and treatment solution used is: thiocarbamide 2.5-3.5g/L, SODIUM PHOSPHATE, MONOBASIC 3-8g/L, OP-105-12ml/L.Degreasing and rust removal process of the present invention simplifies pre-treatment operation, and degreasing and rust removal is effective, pump shaft any surface finish, without crossing erosion and Hydrogen Brittleness Phenomena.The clean-out system application of hydrochloric acid, sulfuric acid acidic group is comparatively extensive, and cost is low, and efficiency is higher, but the Cl that pickling is residual
-, SO4
2-very large to the post-etching harm of pump shaft.The hidden danger that the phosphoric acid acidic group that the present invention adopts does not have erosion residual, more environmental protection, safety.
In the working method of above-mentioned nutplate, the treatment solution that activation treatment adopts is: nitric acid 120-160ml/L, the hydrofluoric acid 200-210ml/L of 40%.Blackout part surface film oxide is removed in activation, makes it to expose active surface, can significantly improve uniformity coefficient and the sticking power of black film.
In the working method of above-mentioned nutplate, blackening process treatment solution used is: CuSO
41.5-2.0g/L, (NH
4)
6mo
7o
218-20g/L, Na
2s
2o
33.0-3.6g/L, NiSO
41.4-1.8g/, ZnCl
23.2-3.5g/L.Further preferably, described blackening process carries out in two steps, the first step, and pH is 1.2-1.6, and the treatment time is 2-4min; Second step, pH is 3.2-3.6, and the treatment time is 4-8min, and two-step pretreatment carries out all at normal temperatures.Copper sulfate consumption must strictly control, and concentration is low, and film adhesion is poor; The general coppery of too high then rete.The excessive concentration of Sulfothiorine is then unfavorable for depositing of hair blackening liquid.
Compared with prior art, moiety and the mass percent compatibility thereof of nutplate of the present invention are reasonable, after modified, forging, quenching, temper, there is hard and wear-resisting surface and tough and tensile heart portion, there is higher low-temperature impact toughness, good processibility, and heart portion still remains toughness and plasticity, again through the blackening process on surface, further increase the intensity of nutplate, hardness, toughness, erosion resistance and wear resistance, improve its processing characteristics simultaneously, make it easily weld.
Accompanying drawing explanation
Fig. 1 is the structure iron of nutplate of the present invention.
In figure, 1, main body; 2, boss; 3, pilot hole.
Embodiment
Be below that specific embodiments of the invention and accompanying drawing illustrate, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As shown in Figure 1, nutplate of the present invention comprises main body (1), boss (2), pilot hole (3), boss (2) is symmetricly set on close end place, main body (1) two ends, the quantity of pilot hole (3) is even number, and be symmetricly set on main body (1) surface, main body (1) axis place is provided with hollow, and this nutplate is processed by high strength alloy steel.By being symmetrical arranged pilot hole, improve the accuracy in nutplate use, the hollow essence arranged in main body is open holes, for wearing screw or bolt.
Further, end, main body two ends is pointed.
Again further, pointed top is circular arc.
Further, pilot hole (3) is counterbore or through hole.
Described nutplate high strength alloy steel is grouped into by the one-tenth of following mass percent: C:0.02%-0.10%, Si:0.05%-0.30%, Mn:0.20%-0.50%, Al:0.15%-1.20%, Cr:0.50%-1.20%, V:0.003%-0.01%, B:0.08%-0.20%, Ti:0.01%-0.03%, S≤0.035%, P≤0.035%, all the other are Fe.
Nutplate of the present invention is further illustrated below by specific embodiment.
Embodiment 1
Pre-treatment: (high strength alloy steel is grouped into by the one-tenth of following mass percent: C:0.10% by high strength alloy steel, Si:0.05%, Mn:0.50%, Al:0.15%, Cr:1.20%, V:0.003%, B:0.20%, Ti:0.01%-0.03%, S≤0.035%, P≤0.035%, all the other are Fe) at 880 DEG C, carry out modifier treatment, insulation 2h;
Thermal treatment: by the forging molding at 1220 DEG C of the high strength alloy steel after modifier treatment, insulation 0.3h, then quench treatment is carried out with residual forging heat, when temperature is cooled to 900 DEG C immediately with the speed water-cooled of 25 DEG C/min to room temperature, then be heated to 520 DEG C and carry out temper 2h, last with the speed oil cooling of 22 DEG C/min to room temperature, obtain nutplate work in-process;
Surface treatment: (temperature of degreasing and rust removal process is 30 DEG C nutplate work in-process to be carried out successively degreasing and rust removal, treatment time is 10min, treatment solution used is: thiocarbamide 2.5g/L, SODIUM PHOSPHATE, MONOBASIC 8g/L, OP-105ml/L), (treatment solution that activation treatment adopts is activation treatment: nitric acid 160ml/L, the hydrofluoric acid 200ml/L of 40%), blackening process (the first step, pH is 1.6, and the treatment time is 2min; Second step, pH is 3.6, and the treatment time is 4min, and two-step pretreatment carries out all at normal temperatures, and blackening process treatment solution used is: CuSO
42.0g/L, (NH
4)
6mo
7o
218g/L, Na
2s
2o
33.6g/L, NiSO
41.4g/, ZnCl
23.5g/L), common Passivation Treatment, nutplate finished product can be obtained.
Embodiment 2
Pre-treatment: (high strength alloy steel is grouped into by the one-tenth of following mass percent: C:0.04% by high strength alloy steel, Si:0.25%, Mn:0.25%, Al:1.00%, Cr:0.60%, V:0.01%, B:0.10%, Ti:0.025%, S≤0.035%, P≤0.035%, all the other are Fe) at 820 DEG C, carry out modifier treatment, insulation 2h;
Thermal treatment: by the forging molding at 1200 DEG C of the high strength alloy steel after modifier treatment, insulation 0.5h, then quench treatment is carried out with residual forging heat, when temperature is cooled to 900 DEG C immediately with the speed water-cooled of 22 DEG C/min to room temperature, then be heated to 500 DEG C and carry out temper 2h, last with the speed oil cooling of 20 DEG C/min to room temperature, obtain nutplate work in-process;
Surface treatment: (temperature of degreasing and rust removal process is 35 DEG C nutplate work in-process to be carried out successively degreasing and rust removal, treatment time is 8min, treatment solution used is: thiocarbamide 2.2g/L, SODIUM PHOSPHATE, MONOBASIC 8g/L, OP-106ml/L), (treatment solution that activation treatment adopts is activation treatment: nitric acid 150ml/L, the hydrofluoric acid 208ml/L of 40%), blackening process (the first step, pH is 1.3, and the treatment time is 3min; Second step, pH is 3.3, and the treatment time is 8min, and two-step pretreatment carries out all at normal temperatures, and blackening process treatment solution used is: CuSO
41.6g/L, (NH
4)
6mo
7o
219g/L, Na
2s
2o
33.2g/L, NiSO
41.7g/, ZnCl
23.3g/L), common Passivation Treatment, nutplate finished product can be obtained.
Embodiment 3
Pre-treatment: (high strength alloy steel is grouped into by the one-tenth of following mass percent: C:0.06% by high strength alloy steel, Si:0.15%, Mn:0.35%, Al:0.60%, Cr:0.70%, V:0.009%, B:0.12%, Ti:0.022%, S≤0.035%, P≤0.035%, all the other are Fe) at 900 DEG C, carry out modifier treatment, insulation 2h;
Thermal treatment: by the forging molding at 1190 DEG C of the high strength alloy steel after modifier treatment, insulation 0.4h, then quench treatment is carried out with residual forging heat, when temperature is cooled to 900 DEG C immediately with the speed water-cooled of 20 DEG C/min to room temperature, then be heated to 480 DEG C and carry out temper 2h, last with the speed oil cooling of 18 DEG C/min to room temperature, obtain nutplate work in-process;
Surface treatment: ((temperature of degreasing and rust removal process is 40 DEG C nutplate work in-process to be carried out successively degreasing and rust removal, treatment time is 8min, treatment solution used is: thiocarbamide 3.0g/L, SODIUM PHOSPHATE, MONOBASIC 5g/L, OP-108ml/L), (treatment solution that activation treatment adopts is activation treatment: nitric acid 140ml/L, the hydrofluoric acid 205ml/L of 40%), blackening process (the first step, pH is 1.4, and the treatment time is 3min; Second step, pH is 3.3, and the treatment time is 5min, and two-step pretreatment carries out all at normal temperatures, and blackening process treatment solution used is: CuSO
41.8g/L, (NH
4)
6mo
7o
219g/L, Na
2s
2o
33.3g/L, NiSO
41.6g/, ZnCl
23.3g/L), common Passivation Treatment, nutplate finished product can be obtained.
Embodiment 4
Pre-treatment: (high strength alloy steel is grouped into by the one-tenth of following mass percent: C:0.08% by high strength alloy steel, Si:0.08%, Mn:0.40%, Al:0.30%, Cr:0.80%, V:0.008%, B:0.16%, Ti:0.015%, S≤0.035%, P≤0.035%, all the other are Fe) at 890 DEG C, carry out modifier treatment, insulation 1h;
Thermal treatment: by the forging molding at 1160 DEG C of the high strength alloy steel after modifier treatment, insulation 0.5h, then quench treatment is carried out with residual forging heat, when temperature is cooled to 900 DEG C immediately with the speed water-cooled of 16 DEG C/min to room temperature, then be heated to 460 DEG C and carry out temper 2h, last with the speed oil cooling of 21 DEG C/min to room temperature, obtain nutplate work in-process;
Surface treatment: (temperature of degreasing and rust removal process is 45 DEG C nutplate work in-process to be carried out successively degreasing and rust removal, treatment time is 6min, treatment solution used is: thiocarbamide 3.2g/L, SODIUM PHOSPHATE, MONOBASIC 7g/L, OP-106ml/L), (treatment solution that activation treatment adopts is activation treatment: nitric acid 150ml/L, the hydrofluoric acid 202ml/L of 40%), blackening process (the first step, pH is 1.5, and the treatment time is 2min; Second step, pH is 3.5, and the treatment time is 7min, and two-step pretreatment carries out all at normal temperatures, and blackening process treatment solution used is: CuSO
41.9g/L, (NH
4)
6mo
7o
218g/L, Na
2s
2o
33.5g/L, NiSO
41.5g/, ZnCl
23.1g/L), common Passivation Treatment, nutplate finished product can be obtained.
Embodiment 5
Pre-treatment: (high strength alloy steel is grouped into by the one-tenth of following mass percent: C:0.02% by high strength alloy steel, Si:0.30%, Mn:0.20%, Al:1.20%, Cr:0.50%, 0.01%, B:0.08%, Ti:0.03%, S≤0.035%, P≤0.035%, all the other are Fe) at 940 DEG C, carry out modifier treatment, insulation 2h;
Thermal treatment: by the forging molding at 1150 DEG C of the high strength alloy steel after modifier treatment, insulation 0.6h, then quench treatment is carried out with residual forging heat, when temperature is cooled to 900 DEG C immediately with the speed water-cooled of 15 DEG C/min to room temperature, then be heated to 520 DEG C and carry out temper 2h, last with the speed oil cooling of 22 DEG C/min to room temperature, obtain nutplate work in-process;
Surface treatment: (temperature of degreasing and rust removal process is 50 DEG C nutplate work in-process to be carried out successively degreasing and rust removal, treatment time is 5min, treatment solution used is: thiocarbamide 3.5g/L, SODIUM PHOSPHATE, MONOBASIC 3g/L, OP-1012ml/L), (treatment solution that activation treatment adopts is activation treatment: nitric acid 120ml/L, the hydrofluoric acid 210ml/L of 40%), blackening process (the first step, pH is 1.2, and the treatment time is 4min; Second step, pH is 3.2, and the treatment time is 8min, and two-step pretreatment carries out all at normal temperatures, and blackening process treatment solution used is: CuSO
41.5g/L, (NH
4)
6mo
7o
220g/L, Na
2s
2o
33.0g/L, NiSO
41.8g/, ZnCl
23.2g/L), common Passivation Treatment, nutplate finished product can be obtained.
Comparative example 1
Comparative example 1 is common commercially available nutplate.
Comparative example 2
Comparative example 2 and the difference of embodiment 3 are only in comparative example 2 nutplate steel alloy not containing Cr, V, B, Ti.
Comparative example 3
Comparative example 3 is only with the difference of embodiment 3, and the nutplate in comparative example 3 adopts working method common in prior art to obtain, and does not namely adopt and utilizes remnant forging thermal quenching process.
The nutplate made by above-described embodiment 1-5 and comparative example 1-3 carries out Mechanics Performance Testing, and test result is as shown in table 2.
Table 2: embodiment 1-5 and comparative example 1-3 nutplate the performance test results
In sum, moiety and the mass percent compatibility thereof of nutplate of the present invention are reasonable, after modified, forging, quenching, temper, there is hard and wear-resisting surface and tough and tensile heart portion, there is higher low-temperature impact toughness, good processibility, and heart portion still remains toughness and plasticity, again through the blackening process on surface, increase substantially the intensity of nutplate, hardness, toughness, erosion resistance and wear resistance, improved its processing characteristics simultaneously, made it easily weld.
Above embodiment is only for illustration of technical scheme of the present invention but not limiting the scope of the invention; although be explained in detail the present invention with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to technical scheme of the present invention or equivalent replacement, and not depart from essence and the scope of technical solution of the present invention.
Claims (8)
1. a working method for nutplate, is characterized in that, described working method comprises the steps:
Pre-treatment: high strength alloy steel is carried out modifier treatment;
Thermal treatment: by the forging molding at 1150-1220 DEG C of the high strength alloy steel after modifier treatment, insulation 0.3-0.6h, then quench treatment is carried out with residual forging heat, when temperature is cooled to 900 DEG C immediately water-cooled to room temperature, then be heated to 450-520 DEG C and carry out temper 2-3h, last oil cooling, to room temperature, obtains nutplate work in-process;
Surface treatment: nutplate work in-process are carried out degreasing and rust removal, activation treatment, blackening process, Passivation Treatment successively, can obtain nutplate finished product.
2. the working method of nutplate according to claim 1, is characterized in that, the temperature of described modifier treatment is 880-940 DEG C, insulation 1-2h.
3. the working method of nutplate according to claim 1, is characterized in that, the speed of described water-cooled is 15-25 DEG C/min.
4. the working method of nutplate according to claim 1, is characterized in that, the speed of described oil cooling is 16-22 DEG C/min.
5. the working method of nutplate according to claim 1, is characterized in that, the temperature of degreasing and rust removal process is 30-50 DEG C, and the treatment time is 5-10min, and treatment solution used is: thiocarbamide 2.5-3.5g/L, SODIUM PHOSPHATE, MONOBASIC 3-8g/L, OP-105-12ml/L.
6. the working method of nutplate according to claim 1, is characterized in that, the treatment solution that activation treatment adopts is: nitric acid 120-160ml/L, the hydrofluoric acid 200-210ml/L of 40%.
7. the working method of nutplate according to claim 1, is characterized in that, blackening process treatment solution used is: CuSO
41.5-2.0g/L, (NH
4)
6mo
7o
218-20g/L, Na
2s
2o
33.0-3.6g/L, NiSO
41.4-1.8g/, ZnCl
23.2-3.5g/L.
8. the working method of nutplate according to claim 7, is characterized in that, described blackening process carries out in two steps, the first step, and pH is 1.2-1.6, and the treatment time is 2-4min; Second step, pH is 3.2-3.6, and the treatment time is 4-8min, and two-step pretreatment carries out all at normal temperatures.
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|---|---|---|---|
| CN201510795385.XA CN105369259A (en) | 2015-11-18 | 2015-11-18 | Machining method for nut plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510795385.XA CN105369259A (en) | 2015-11-18 | 2015-11-18 | Machining method for nut plate |
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|---|---|
| CN105369259A true CN105369259A (en) | 2016-03-02 |
Family
ID=55371874
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018094308A1 (en) * | 2016-11-21 | 2018-05-24 | Illinois Tool Works Inc. | Weldable nut plate |
| CN108177082A (en) * | 2017-12-29 | 2018-06-19 | 武汉理工大学 | A kind of floating type tooling of quick change for robot casting grinding |
| CN109338243A (en) * | 2018-11-07 | 2019-02-15 | 东莞市煜田新材料有限公司 | A kind of powder sintered titanium master alloy Heat-Treatment of Steel technique |
| CN111809032A (en) * | 2020-07-21 | 2020-10-23 | 金华市国鼎五金制品有限公司 | Preparation method of 14-grade ultrahigh-strength nut |
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| CN102943207A (en) * | 2012-11-09 | 2013-02-27 | 谢亚平 | High-strength fastener and processing method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018094308A1 (en) * | 2016-11-21 | 2018-05-24 | Illinois Tool Works Inc. | Weldable nut plate |
| US11384786B2 (en) | 2016-11-21 | 2022-07-12 | Illinois Tool Works Inc. | Weldable nut plate |
| CN108177082A (en) * | 2017-12-29 | 2018-06-19 | 武汉理工大学 | A kind of floating type tooling of quick change for robot casting grinding |
| CN109338243A (en) * | 2018-11-07 | 2019-02-15 | 东莞市煜田新材料有限公司 | A kind of powder sintered titanium master alloy Heat-Treatment of Steel technique |
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Application publication date: 20160302 |