CN102407412A - Particle-reinforced nickel titanium based wear-resistant surfacing layer and preparation method thereof - Google Patents
Particle-reinforced nickel titanium based wear-resistant surfacing layer and preparation method thereof Download PDFInfo
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- CN102407412A CN102407412A CN2011102572533A CN201110257253A CN102407412A CN 102407412 A CN102407412 A CN 102407412A CN 2011102572533 A CN2011102572533 A CN 2011102572533A CN 201110257253 A CN201110257253 A CN 201110257253A CN 102407412 A CN102407412 A CN 102407412A
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Abstract
The invention discloses a particle-reinforced nickel titanium based wear-resistant surfacing layer and a preparation method thereof, belonging the technical field of surfacing. Reinforced particles are titanium carbide particles uniformly dispersed in a nickel titanium alloy based surfacing layer, the percentage of the titanium carbide particles in the alloy is 50-60%, and the mass percentage of a nickel titanium alloy base is 40-50%, wherein the mass percentage of nickel in a nickel titanium alloy base is 53-57%, and the mass percentage of titanium in the nickel titanium alloy base is 43-47%. The preparation method disclosed by the invention comprises the following steps of mixing nickel parts and titanium, adding the titanium carbide to obtain alloy powder, and surfacing the alloy powder on a base body by a plasma arc surface device. The surfacing layer of the invention has good wear resistance, and the relative wear resistance of the surfacing layer is 11 times that of Q234 steel.
Description
Technical field
The present invention is that a kind of particle strengthens NiTi base wearable overlay and preparation method thereof, belongs to the technique for overlaying field, is mainly used in wear-resisting industrial circle.
Technical background
The machine components great majority are made with metal material, in use because the interaction of the piece surface that matches can cause wearing and tearing.Along with modern industry and science and technology development, machine components often are in unusual complicacy and exacting terms work down, and a large amount of plant equipment are often destroyed because of wearing and tearing.
Nitinol has good abrasion resistance, has good wear resistance under (like cavitation corrosion, jet wearing and tearing, abrasive jet wear, dry friction and wear, corrosive wear and abrasive wear etc.) under the different wear forms.Especially the anti-erosion property of Nitinol more and more receives people's attention.In order to improve the wearability of Nitinol, can in Nitinol, add hard particles and realize.But this type research mainly concentrates on cavitation erosion, erosion and cavitation erosion and the erosion compound action.Now also do not see the report that has research to adopt the abrasive wear behavior of plasma arc surfacing Nitinol.
Summary of the invention
The object of the present invention is to provide a kind of particle to strengthen Nitinol base wearable overlay and preparation method thereof.
A kind of particle provided by the present invention strengthens Nitinol base wearable overlay; It is characterized in that enhanced granule is a titanium carbide, titanium carbide is evenly dispersed in the Nitinol base overlay cladding; Titanium carbide accounts for the percentage of alloy: 50-60%, Nitinol matrix amount percentage: 40-50%; The quality percentage composition of nickel: 53-57% in the Nitinol base wherein, the quality percentage composition 43-47% of titanium.
A kind of particle provided by the present invention strengthens the preparation method of Nitinol base wearable overlay, may further comprise the steps:
(1) according to NiTi mass percent (53-57%: 43-47%), pure nickel powder and pure titanium valve are evenly mixed;
(2) mixed powder of the titanium carbide granule that adds with step (1) gained fully mixed once more;
(3) adopt the plasma arc surfacing equipment will be on matrix through the alloy powder built-up welding of step (2) gained.The bead-welding technology parameter is: ion gas Ar, gas flow of ions amount 180-240L/h; Powder feeding gas Ar, powder feeding gas flow 160-220L/h; Protection gas Ar, protection throughput 280-340L/h; Powder feeding voltage 3.0-5.0V; Untransferable arc voltage 13-18V, untransferable arc electric current 55-65A; Transferred arc voltage 28-35V, transferred arc electric current 80-120A; Walking voltage 1.3-2.2V, nozzle and workpiece apart from 8-15mm, swing voltage 8.0-12.0V, amplitude of fluctuation 20-25mm.
The granularity of step (1) nickel powder is the 80-150 order, and the granularity of titanium valve is the 80-150 order.
Research in the past mainly concentrates on anti-cavitation erosion, anti-impact erosion and the biological property thereof of NiTi alloy, and the present invention has studied the abrasive wear behavior of NiTi alloy.Overlay cladding of the present invention obtains through plasma arc surfacing technology.With respect to welding procedures such as argon tungsten-arc weldings, the overlay cladding that utilizes plasma arc surfacing technology to obtain, its dilution rate is low, and the matrix distortion is little, helps obtaining high-quality overlay cladding.
Overlay cladding wearability provided by the present invention is good, and its relative wear resistance is 11 times of Q235 steel.
Below in conjunction with the specific embodiment the present invention is described further.
Description of drawings:
The X diffracting spectrum of Fig. 1 embodiment 1.
The specific embodiment:
Employed nickel powder, titanium valve and titanium carbide are the commercial goods among the subordinate embodiment.
Embodiment 1:
Take by weighing TiC36.0 gram, nickel powder 13.2 grams, titanium valve 10.8 grams.Earlier nickel powder and titanium valve were carried out mechanical mixture 10 minutes, add titanium carbide in the Nitinol powder that mixes afterwards, carrying out mechanical mixture 10 minutes with mortar.Select the Q235 steel plate of 300 * 150 * 10mm for use, polish oxide on the surface of steel plate and oil stain etc. one time with sand paper earlier, place the ultrasonic equipment that fills acetone to clean 5 minutes steel plate afterwards.Place the ventilation to make its natural air drying steel plate.Utilize plasma arc surfacing equipment (L5-400) with the alloy powder built-up welding that mixes on the Q235 steel plate.The plasma arc surfacing parameter is following: ion gas Ar, gas flow of ions amount L/h:220, powder feeding gas Ar, powder feeding gas flow L/h:200; Protection gas Ar, protection throughput L/h:300, powder feeding voltage V:4.0, untransferable arc voltage V:15; Untransferable arc electric current A:60, transferred arc voltage V:30, transferred arc electric current A:100, walking voltage V:2.0; Nozzle and workpiece apart from mm:11, swing voltage V:9.0, amplitude of fluctuation mm:23.Relative wear resistance can be seen table 1.The X ray diffracting spectrum of overlay cladding is seen Fig. 1.Can know through the XRD diffracting spectrum, mainly contain two kinds of things of Ni3Ti and TiC in this overlay cladding mutually.Ni3Ti plays a part to support and bonds hard mutually, and TiC has high hardness, can produce good particle strengthening effect to alloy, effectively stops the expansion of dislocation motion and crackle.
Embodiment 2:
Take by weighing TiC33.0 gram, nickel powder 14.85 grams, titanium valve 12.15 grams.Earlier nickel powder and titanium valve were carried out mechanical mixture 10 minutes, add titanium carbide in the Nitinol powder that mixes afterwards, carrying out mechanical mixture 10 minutes with mortar.Select the Q235 steel plate of 300 * 150 * 10mm for use, polish oxide on the surface of steel plate and oil stain etc. one time with sand paper earlier, place the ultrasonic equipment that fills acetone to clean 5 minutes steel plate afterwards.Place the ventilation to make its natural air drying steel plate.Utilize plasma arc surfacing equipment (L5-400) with the alloy powder built-up welding that mixes on the Q235 steel plate.The plasma arc surfacing parameter is following: ion gas Ar, gas flow of ions amount L/h:220, powder feeding gas Ar, powder feeding gas flow L/h:200; Protection gas Ar, protection throughput L/h:300, powder feeding voltage V:4.0, untransferable arc voltage V:15; Untransferable arc electric current A:60, transferred arc voltage V:30, transferred arc electric current A:100, walking voltage V:2.1; Nozzle and workpiece apart from mm:11, swing voltage V:9.5, amplitude of fluctuation mm:22.Relative wear resistance can be seen table 1.
Embodiment 3:
Take by weighing TiC31.8 gram, nickel powder 15.51 grams, titanium valve 12.69 grams.Earlier nickel powder and titanium valve were carried out mechanical mixture 10 minutes, add titanium carbide in the Nitinol powder that mixes afterwards, carrying out mechanical mixture 10 minutes with mortar.Select the Q235 steel plate of 300 * 150 * 10mm for use, polish oxide on the surface of steel plate and oil stain etc. one time with sand paper earlier, place the ultrasonic equipment that fills acetone to clean 5 minutes steel plate afterwards.Place the ventilation to make its natural air drying steel plate.Utilize plasma arc surfacing equipment (L5-400) with the alloy powder built-up welding that mixes on the Q235 steel plate.The plasma arc surfacing parameter is following: ion gas Ar, gas flow of ions amount L/h:220, powder feeding gas Ar, powder feeding gas flow L/h:200; Protection gas Ar, protection throughput L/h:300, powder feeding voltage V:4.0, untransferable arc voltage V:15; Untransferable arc electric current A:60, transferred arc voltage V:30, transferred arc electric current A:100, walking voltage V:2.2; Nozzle and workpiece apart from mm:12, swing voltage V:10.0, amplitude of fluctuation mm:24.Relative wear resistance can be seen table 1.
Select for use MLS-225 type damp sand rubber wheel grain-abrasion testing machine to carry out abrasive grain wear test.Utilize the rubber wheel that rotates to drive the ore in sand form that mixes with water material production is worn and torn, evaluation fret wear performance.The mortar ratio is joined 1500g sand for 1000g water, and used abrasive material is 40-70 order (212-425 μ m) quartz sand in the test.
At first to test specimen pre-grinding 1000 commentaries on classics under the load of 100N, eliminate coating surface machined burrs and hardened layer before the test, finish grinding 2000 then changes.Before and after wear test; In ultrasonic washing instrument, clean 3～5min with acetone soln; Treat to use behind the bone dry precision be ten thousand/ Sai Duolisi BS224S type scales/electronic balance weighing, the mean value of getting 3 samples is weighed the anti-wear performance of material, and compares with matrix (Q235) sample.Be its relative wear resistance with likening to of contrast piece wear weight loss and measuring piece wear weight loss.The wear test parameter is seen table 1.
Table 1 relative wear resistance ability
| Average abrasion amount (g) | Relative wear resistance (ε) | |
| Embodiment 1 | 0.1656 | 11.3 |
| Embodiment 2 | 0.1688 | 11.1 |
| Embodiment 3 | 0.1701 | 11.0 |
| Base material Q235 | 1.8781 | 1.0 |
Claims (3)
1. a particle strengthens Nitinol base wearable overlay; It is characterized in that enhanced granule is a titanium carbide, titanium carbide is evenly dispersed in the Nitinol base overlay cladding; Titanium carbide accounts for the percentage of alloy: 50-60%, Nitinol matrix amount percentage: 40-50%; The quality percentage composition of nickel: 53-57% in the Nitinol base wherein, the quality percentage composition 43-47% of titanium.
2. strengthen the preparation method of Nitinol base wearable overlay according to a kind of particle of claim 1, it is characterized in that, may further comprise the steps:
(1), pure nickel powder and pure titanium valve are evenly mixed according to the NiTi mass percent;
(2) mixed powder of the titanium carbide granule that adds with step (1) gained fully mixed once more;
(3) adopt the plasma arc surfacing equipment will be through the alloy powder built-up welding of step (2) gained on matrix, the bead-welding technology parameter be: ion gas Ar, gas flow of ions amount 180-240L/h; Powder feeding gas Ar, powder feeding gas flow 160-220L/h; Protection gas Ar, protection throughput 280-340L/h; Powder feeding voltage 3.0-5.0V; Untransferable arc voltage 13-18V, untransferable arc electric current 55-65A; Transferred arc voltage 28-35V, transferred arc electric current 80-120A; Walking voltage 1.3-2.2V, nozzle and workpiece apart from 8-15mm, swing voltage 8.0-12.0V, amplitude of fluctuation 20-25mm.
3. according to the method for claim 2, it is characterized in that the granularity of step (1) nickel powder is the 80-150 order, the granularity of titanium valve is the 80-150 order.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102848102A (en) * | 2012-06-28 | 2013-01-02 | 北京工业大学 | Iron-based abrasion-resistant alloy containing superfine hard phase |
| CN103060655A (en) * | 2012-10-10 | 2013-04-24 | 北京工业大学 | Preparation method of alloy powder and coating layer for preparing iron-base cladding layer |
| CN103060797A (en) * | 2013-01-14 | 2013-04-24 | 北京工业大学 | Preparation method of plasma cladding high-entropy alloy coating layer |
| CN108994310A (en) * | 2018-09-19 | 2018-12-14 | 西迪技术股份有限公司 | A kind of High Strength Wear-Resistance Material, friction material and its plasma transferred arc welding production technology |
| CN113523719A (en) * | 2021-07-10 | 2021-10-22 | 上海泽超实业有限公司 | Machining process of helical blade |
| CN113909656A (en) * | 2021-12-10 | 2022-01-11 | 东方法马通核泵有限责任公司 | Surfacing process and surfacing method for main pump shaft seal matching part |
-
2011
- 2011-09-01 CN CN2011102572533A patent/CN102407412A/en active Pending
Non-Patent Citations (6)
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| Y.C.LUO等: "New wear-resistant material:Nano-TiN/TiC/TiNi composite", 《JOURNAL OF MATERIALS SCIENCE》 * |
| 吴玉萍等: "等离子原位合成TiC颗粒增强Ni基复合涂层", 《材料科学与工艺》 * |
| 吴限等: "NiTi金属件化合物涂层制备研究进展", 《热处理技术与装备》 * |
| 杨瑞嵩等: "TiC/NiTi形状记忆合金复合材料制备研究现状", 《内江科技》 * |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102848102A (en) * | 2012-06-28 | 2013-01-02 | 北京工业大学 | Iron-based abrasion-resistant alloy containing superfine hard phase |
| CN102848102B (en) * | 2012-06-28 | 2015-04-08 | 北京工业大学 | Iron-based abrasion-resistant alloy containing superfine hard phase |
| CN103060655A (en) * | 2012-10-10 | 2013-04-24 | 北京工业大学 | Preparation method of alloy powder and coating layer for preparing iron-base cladding layer |
| CN103060655B (en) * | 2012-10-10 | 2015-05-20 | 北京工业大学 | Preparation method of alloy powder and coating layer for preparing iron-base cladding layer |
| CN103060797A (en) * | 2013-01-14 | 2013-04-24 | 北京工业大学 | Preparation method of plasma cladding high-entropy alloy coating layer |
| CN103060797B (en) * | 2013-01-14 | 2015-01-07 | 北京工业大学 | Preparation method of plasma cladding high-entropy alloy coating layer |
| CN108994310A (en) * | 2018-09-19 | 2018-12-14 | 西迪技术股份有限公司 | A kind of High Strength Wear-Resistance Material, friction material and its plasma transferred arc welding production technology |
| CN108994310B (en) * | 2018-09-19 | 2021-11-19 | 西迪技术股份有限公司 | High-strength wear-resistant material, friction material and plasma transfer arc welding production process thereof |
| CN113523719A (en) * | 2021-07-10 | 2021-10-22 | 上海泽超实业有限公司 | Machining process of helical blade |
| CN113909656A (en) * | 2021-12-10 | 2022-01-11 | 东方法马通核泵有限责任公司 | Surfacing process and surfacing method for main pump shaft seal matching part |
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Application publication date: 20120411 |