CN106591611B - A kind of method for improving CuW Wear Resistances - Google Patents
A kind of method for improving CuW Wear Resistances Download PDFInfo
- Publication number
- CN106591611B CN106591611B CN201610999638.XA CN201610999638A CN106591611B CN 106591611 B CN106591611 B CN 106591611B CN 201610999638 A CN201610999638 A CN 201610999638A CN 106591611 B CN106591611 B CN 106591611B
- Authority
- CN
- China
- Prior art keywords
- powder
- cuw
- alloy
- alloys
- improving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 68
- 239000000956 alloy Substances 0.000 claims abstract description 68
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000010949 copper Substances 0.000 claims abstract description 29
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052802 copper Inorganic materials 0.000 claims abstract description 23
- 229910003271 Ni-Fe Inorganic materials 0.000 claims abstract description 16
- 238000003825 pressing Methods 0.000 claims abstract description 16
- 239000011812 mixed powder Substances 0.000 claims abstract description 11
- 238000005245 sintering Methods 0.000 claims abstract description 11
- 230000008595 infiltration Effects 0.000 claims abstract description 7
- 238000001764 infiltration Methods 0.000 claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 5
- 239000010439 graphite Substances 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims description 31
- 239000010935 stainless steel Substances 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims 1
- 239000000320 mechanical mixture Substances 0.000 claims 1
- 238000010792 warming Methods 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 abstract description 4
- 239000010937 tungsten Substances 0.000 abstract description 4
- 229910052721 tungsten Inorganic materials 0.000 abstract description 4
- 229910052759 nickel Inorganic materials 0.000 abstract description 3
- 238000005728 strengthening Methods 0.000 abstract description 3
- 239000006104 solid solution Substances 0.000 abstract description 2
- 238000009827 uniform distribution Methods 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 7
- 238000000227 grinding Methods 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 238000007873 sieving Methods 0.000 description 5
- 238000005507 spraying Methods 0.000 description 4
- 238000002679 ablation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000004663 powder metallurgy Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 229910001080 W alloy Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/045—Alloys based on refractory metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/04—Alloys based on tungsten or molybdenum
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
本发明公开了一种改善CuW合金耐磨性的方法，将钨粉和铜粉经过机械混合后粘结、晾干、筛粉，得到混合粉末；将混合粉末采用冷压模具压制成毛坯；将毛坯、纯铜块和Cu‑Al‑Ni‑Fe合金一起装在高纯石墨坩埚中置于气氛保护高温烧结炉中，在氢气保护气氛下进行烧结、熔渗，得到CuW合金。本发明改善CuW合金耐磨性的制备方法，利用Cu‑Al‑Ni‑Fe合金代替部分纯铜通过熔渗法所制备出得CuW合金组织分布均匀，Cu与Al、Ni会产生固溶强化，进而促进了铜钨两相的烧结，提高了合金的强度。本发明中制备的CuW合金的密度、硬度和电导率都有所增加，而摩擦系数降低，合金的磨损率相对较小。
The invention discloses a method for improving the wear resistance of a CuW alloy. The tungsten powder and copper powder are mechanically mixed, bonded, dried, and sieved to obtain a mixed powder; the mixed powder is pressed into a blank by a cold-pressing mold; The blank, pure copper block and Cu-Al-Ni-Fe alloy are packed together in a high-purity graphite crucible and placed in an atmosphere-protected high-temperature sintering furnace, and sintered and infiltrated in a hydrogen-protected atmosphere to obtain a CuW alloy. The preparation method for improving the wear resistance of CuW alloys in the present invention uses Cu-Al-Ni-Fe alloys to replace part of pure copper and prepares CuW alloys with uniform distribution through the infiltration method, and Cu, Al and Ni will produce solid solution strengthening, In turn, the sintering of the two phases of copper and tungsten is promoted, and the strength of the alloy is improved. The density, hardness and electrical conductivity of the CuW alloy prepared in the present invention are all increased, while the friction coefficient is reduced, and the wear rate of the alloy is relatively small.
Description
技术领域technical field
本发明属于粉末冶金法制备CuW合金技术领域，具体涉及一种改善CuW合金耐磨性的方法。The invention belongs to the technical field of CuW alloy prepared by powder metallurgy, and in particular relates to a method for improving the wear resistance of CuW alloy.
背景技术Background technique
CuW合金由于具有良好的耐电弧烧蚀性、抗熔焊性以及高的强度而被广泛应用于各种断路器、负荷开关中。由于铜、钨的熔点和密度存在很大差异，且常规条件下二者不发生互溶，所以粉末冶金法是目前制备CuW合金所采用的普遍方法。近年来，科学技术的快速发展全面推动了我国各类工业的发展，目前，我国经济进入快速增长的新常态，电力需求仍处于上升阶段，针对新型高压触头材料，要求能够在高频次开断下而不失效，目前，商用CuW合金不能满足这种热、电、机械耦合作用下的高频次开断，而影响电触头使用寿命的主要因素是电弧烧蚀及触头在高频次插拔过程中的机械磨损，因此，新型触头材料研制的关键在于提高触头的耐电弧烧蚀性和摩擦磨损性。CuW alloy is widely used in various circuit breakers and load switches due to its good arc ablation resistance, welding resistance and high strength. Since the melting point and density of copper and tungsten are very different, and the two do not dissolve under normal conditions, powder metallurgy is a common method currently used to prepare CuW alloys. In recent years, the rapid development of science and technology has comprehensively promoted the development of various industries in my country. At present, my country's economy has entered a new normal state of rapid growth, and the demand for electricity is still on the rise. For new high-voltage contact materials, it is required to be able to operate at high frequencies. Breaking without failure. At present, commercial CuW alloys cannot meet the high-frequency breaking under the action of thermal, electrical and mechanical coupling, and the main factors affecting the service life of electrical contacts are arc ablation and contacts at high frequency. Therefore, the key to the development of new contact materials is to improve the arc ablation resistance and friction and wear resistance of the contacts.
发明内容Contents of the invention
本发明的目的是提供一种改善CuW合金耐磨性的方法，使得CuW合金的摩擦系数降低，合金的磨损率相对较小。The purpose of the present invention is to provide a method for improving the wear resistance of CuW alloy, so that the friction coefficient of CuW alloy is reduced, and the wear rate of the alloy is relatively small.
本发明所采用的技术方案是，一种改善CuW合金耐磨性的方法，具体步骤如下：The technical solution adopted in the present invention is a method for improving the wear resistance of CuW alloy, the specific steps are as follows:
步骤1，将钨粉和铜粉经过机械混合后粘结、晾干、筛粉，得到混合粉末；Step 1, mechanically mixing tungsten powder and copper powder, bonding, drying, and sieving to obtain mixed powder;
步骤2，将步骤1得到的混合粉末采用冷压模具压制成毛坯；Step 2, pressing the mixed powder obtained in step 1 into a blank by using a cold pressing die;
步骤3，将步骤2得到的毛坯、纯铜块和Cu-Al-Ni-Fe合金一起装在高纯石墨坩埚中置于气氛保护高温烧结炉中，在氢气保护气氛下进行烧结熔渗，得到CuW合金。In step 3, the blank obtained in step 2, the pure copper block and the Cu-Al-Ni-Fe alloy are placed in a high-purity graphite crucible and placed in an atmosphere-protected high-temperature sintering furnace, and sintered and infiltrated under a hydrogen-protected atmosphere to obtain CuW alloy.
本发明的特点还在于，The present invention is also characterized in that,
步骤1中钨粉为CuW合金总质量的70％，铜粉为钨粉质量的5％～15％。In step 1, the tungsten powder is 70% of the total mass of the CuW alloy, and the copper powder is 5% to 15% of the mass of the tungsten powder.
步骤1中将钨粉和铜粉装入混料机中，按粉末总质量的1:2加入不锈钢磨球，以100r/min的转速混粉4h。In step 1, put tungsten powder and copper powder into the mixer, add stainless steel grinding balls according to the ratio of 1:2 of the total powder mass, and mix the powder at a speed of 100r/min for 4 hours.
步骤2中压制压力300KN～700KN，保压时间30s～50s。In step 2, the pressing pressure is 300KN-700KN, and the holding time is 30s-50s.
步骤3中的Cu-Al-Ni-Fe合金是利用纯铜对CuAl10Ni5Fe5合金进行熔炼稀释得到，其中CuAl10Ni5Fe5合金与纯铜的质量比为1：1～3。The Cu-Al-Ni-Fe alloy in step 3 is obtained by melting and diluting CuAl10Ni5Fe5 alloy with pure copper, wherein the mass ratio of CuAl10Ni5Fe5 alloy to pure copper is 1:1-3.
步骤3中烧结熔渗是以氢气为保护气体，以900℃/h的速度升温至1300～1400℃，保温1～3h，随炉冷却。In step 3, the sintering infiltration uses hydrogen as the protective gas, and the temperature is raised to 1300-1400°C at a rate of 900°C/h, kept for 1-3 hours, and cooled with the furnace.
本发明的有益效果是，本发明改善CuW合金耐磨性的方法，利用Cu-Al-Ni-Fe合金代替部分纯铜通过熔渗法所制备出得CuW合金组织分布均匀，Cu与Al、Ni会产生固溶强化，进而促进了铜钨两相的烧结，提高了合金的强度。本发明中制备的CuW合金的密度、硬度和电导率都有所增加，而摩擦系数降低，合金的磨损率相对较小。The beneficial effects of the present invention are that the method for improving the wear resistance of CuW alloys in the present invention uses Cu-Al-Ni-Fe alloys instead of part of pure copper to prepare CuW alloys with uniform distribution of Cu and Al, Ni Solid solution strengthening will occur, which in turn promotes the sintering of the two phases of copper and tungsten, and improves the strength of the alloy. The density, hardness and electrical conductivity of the CuW alloy prepared in the present invention are all increased, while the friction coefficient is reduced, and the wear rate of the alloy is relatively small.
附图说明Description of drawings
图1是实施例1熔渗Cu-Al-Ni-Fe合金制备的CuW合金组织形貌；Fig. 1 is the CuW alloy structure appearance prepared by infiltration Cu-Al-Ni-Fe alloy of embodiment 1;
图2是本发明制备的CuW合金的硬度；Fig. 2 is the hardness of the CuW alloy prepared by the present invention;
图3是本发明制备的CuW合金的摩擦系数。Fig. 3 is the friction coefficient of the CuW alloy prepared by the present invention.
具体实施方式Detailed ways
下面结合附图和具体实施方式对本发明进行详细说明。The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
本发明改善CuW合金耐磨性的方法，具体步骤如下：The method for improving the wear resistance of CuW alloy of the present invention, concrete steps are as follows:
步骤1，利用纯铜对CuAl10Ni5Fe5合金进行熔炼稀释得到Cu-Al-Ni-Fe合金，其中CuAl10Ni5Fe5合金与纯铜的质量比为1：1～3；Step 1, using pure copper to melt and dilute CuAl10Ni5Fe5 alloy to obtain Cu-Al-Ni-Fe alloy, wherein the mass ratio of CuAl10Ni5Fe5 alloy to pure copper is 1:1-3;
步骤2，将钨粉和铜粉装入混料机中，按粉末总质量的1:2加入不锈钢磨球，以100r/min的转速混粉4h，然后粘结、晾干、筛粉，得到混合粉末；钨粉为CuW合金总质量的70％，铜粉为钨粉质量的5％～15％；Step 2, put tungsten powder and copper powder into the mixer, add stainless steel grinding balls according to the ratio of 1:2 of the total powder mass, mix the powder at a speed of 100r/min for 4 hours, then bond, dry, and sieve the powder to obtain Mixed powder; tungsten powder is 70% of the total mass of CuW alloy, and copper powder is 5% to 15% of the mass of tungsten powder;
步骤3，将步骤2过筛后的粉末通过冷压模具压制，压制压力300KN～700KN，保压30～50秒形成毛坯，压制过程中通过垫片控制毛坯高度以预留定量的空隙进行渗铜；Step 3: Press the powder sieved in step 2 through a cold-pressing die. The pressing pressure is 300KN-700KN, and the pressure is maintained for 30-50 seconds to form a blank. During the pressing process, the height of the blank is controlled by a gasket to reserve a certain amount of space for copper infiltration ;
步骤4，将步骤3得到的毛坯、纯铜块和步骤1得到的Cu-Al-Ni-Fe合金一起装在高纯石墨坩埚中置于气氛保护高温烧结炉中，在氢气保护气氛下以900℃/h的速度升温至1300～1400℃，保温1～3h后随炉冷却，得到CuW合金。Step 4, put the blank obtained in step 3, the pure copper block and the Cu-Al-Ni-Fe alloy obtained in step 1 together in a high-purity graphite crucible and place it in an atmosphere-protected high-temperature sintering furnace. The temperature is raised to 1300~1400℃ at the rate of ℃/h, kept for 1~3h and then cooled with the furnace to obtain CuW alloy.
本发明改善CuW合金耐磨性的方法，利用Cu-Al-Ni-Fe合金代替部分纯铜通过熔渗法所制备出得CuW合金组织分布均匀，同时还保持较高的密度、硬度及电导率，其硬度可达255HB，摩擦系数可降低到0.090，摩擦系数降低了9％，该方式操作简单，强化效果显著，绿色环保。The method for improving the wear resistance of CuW alloys in the present invention uses Cu-Al-Ni-Fe alloys to replace part of pure copper and prepares CuW alloys with uniform microstructure distribution through the infiltration method, while maintaining high density, hardness and electrical conductivity. , the hardness can reach 255HB, the friction coefficient can be reduced to 0.090, and the friction coefficient is reduced by 9%. This method is easy to operate, has a significant strengthening effect, and is environmentally friendly.
由于Cu-Al-Ni-Fe合金组织中有针状的γ2相和颗粒状的β相，且铜的密度远小于钨的密度，采用粉末冶金和熔渗技术将铝青铜由CuW合金的下端渗入CuW合金中，将纯铜由上端渗入。Since there are acicular γ2 phase and granular β phase in the Cu-Al-Ni-Fe alloy structure, and the density of copper is much smaller than that of tungsten, powder metallurgy and infiltration technology is used to infiltrate aluminum bronze from the lower end of CuW alloy. In the CuW alloy, pure copper is infiltrated from the upper end.
Cu-Al-Ni-Fe合金中的针状和颗粒状组织镶嵌入基体中，可以降低CuW合金作为触头材料的摩擦系数和磨损率，而且Al、Ni、Fe的加入可以细化晶粒，提高合金的硬度。The acicular and granular structures in the Cu-Al-Ni-Fe alloy are embedded in the matrix, which can reduce the friction coefficient and wear rate of the CuW alloy as the contact material, and the addition of Al, Ni, and Fe can refine the grains, Increase the hardness of the alloy.
实施例1Example 1
称取定量的钨粉，及钨粉质量的5％的诱导Cu粉，装入混料机中，按粉末总质量的1:2加入不锈钢磨球，以100r/min的转速混粉4h，将机械混合后的粉末进行喷蜡、晾干、筛粉处理，粉末通过冷压模具压制，压制压力300KN，保压30秒形成毛坯，将生坯和纯铜以及成分为CuAl10Ni5Fe5合金装在高纯石墨坩埚中置于气氛保护高温烧结炉中，在氢气保护气氛下以900℃/h的速度升温至1300℃，保温3h后随炉冷却，所得CuW合金的硬度为256HBW，电导率13.2MS/m，摩擦系数为0.097。Weigh a certain amount of tungsten powder and 5% induced Cu powder of the mass of the tungsten powder, put them into a mixer, add stainless steel grinding balls according to 1:2 of the total powder mass, mix the powder at a speed of 100r/min for 4h, and put The mechanically mixed powder is subjected to wax spraying, drying, and powder sieving. The powder is pressed through a cold-pressing mold with a pressing pressure of 300KN and held for 30 seconds to form a blank. The crucible is placed in an atmosphere-protected high-temperature sintering furnace, and the temperature is raised to 1300°C at a rate of 900°C/h under a hydrogen-protected atmosphere. After holding for 3 hours, it is cooled with the furnace. The hardness of the obtained CuW alloy is 256HBW, and the conductivity is 13.2MS/m. The coefficient of friction is 0.097.
图1是未添加Cu-Al-Ni-Fe合金的CuW合金组织，其中有球型W50颗粒与生产W颗粒两种W粉；Figure 1 is the structure of CuW alloy without adding Cu-Al-Ni-Fe alloy, in which there are two kinds of W powders: spherical W 50 particles and production W particles;
图2是本发明制备的CuW合金的硬度随不同成分的Cu-Al-Ni-Fe合金添加量变化的折线图，可以看出随着Cu含量的增加，CuW合金的密硬度降低。Fig. 2 is a broken line graph showing the hardness of CuW alloy prepared by the present invention varies with the addition of Cu-Al-Ni-Fe alloys of different components. It can be seen that the density and hardness of CuW alloy decreases with the increase of Cu content.
图3是本发明制备的CuW合金的摩擦系数随不同成分的Cu-Al-Ni-Fe合金添加量变化的折线图，可以看出随着Cu含量的增加，合金的摩擦系数降低，铜钨合金的耐磨性能越好。Fig. 3 is the broken line graph that the friction coefficient of the CuW alloy prepared by the present invention changes with the Cu-Al-Ni-Fe alloy addition amount of different compositions, as can be seen along with the increase of Cu content, the friction coefficient of alloy reduces, and copper-tungsten alloy The better the wear resistance.
实施例2Example 2
称取定量的钨粉，及钨粉质量的10％的诱导Cu粉，装入混料机中，按粉末总质量的1:2加入不锈钢磨球，以100r/min的转速混粉4h，将机械混合后的粉末进行喷蜡、晾干、筛粉处理，粉末通过冷压模具压制，压制压力500KN，保压40秒形成毛坯，将生坯和纯铜以及成分为CuAl5NiFe合金装在高纯石墨坩埚中置于气氛保护高温烧结炉中，在氢气保护气氛下以900℃/h的速度升温至1350℃，保温2h后随炉冷却，所得CuW合金的硬度为232HBW，电导率15MS/m，摩擦系数为0.095。Weigh a certain amount of tungsten powder and induced Cu powder of 10% of the mass of the tungsten powder, put them into a mixer, add stainless steel grinding balls according to 1:2 of the total powder mass, mix the powder for 4 hours at a speed of 100r/min, and put The mechanically mixed powder is subjected to wax spraying, drying, and powder sieving. The powder is pressed through a cold pressing die with a pressing pressure of 500KN and held for 40 seconds to form a blank. The crucible was placed in an atmosphere-protected high-temperature sintering furnace, and the temperature was raised to 1350°C at a rate of 900°C/h under a hydrogen-protected atmosphere, kept for 2 hours and then cooled with the furnace. The coefficient is 0.095.
实施例3Example 3
称取定量的钨粉，及钨粉质量的15％的诱导Cu粉，装入混料机中，按粉末总质量的1:2加入不锈钢磨球，以100r/min的转速混粉4h，将机械混合后的粉末进行喷蜡、晾干、筛粉处理，粉末通过冷压模具压制，压制压力600KN，保压50秒形成毛坯，将生坯和纯铜以及成分为CuAl2NiFe合金装在高纯石墨坩埚中置于气氛保护高温烧结炉中，在氢气保护气氛下以900℃/h的速度升温至1380℃，保温1.5h后随炉冷却，所得CuW合金的硬度为228HBW，电导率18.5MS/m，摩擦系数为0.092。Weigh a certain amount of tungsten powder and induced Cu powder with 15% of the mass of tungsten powder, put them into a mixer, add stainless steel grinding balls according to the ratio of 1:2 of the total powder mass, and mix the powder at a speed of 100r/min for 4 hours. The mechanically mixed powder is subjected to wax spraying, drying, and powder sieving. The powder is pressed through a cold pressing die with a pressing pressure of 600KN and held for 50 seconds to form a rough. The green body, pure copper and CuAl2NiFe alloy are packed in high-purity graphite The crucible is placed in an atmosphere-protected high-temperature sintering furnace, and the temperature is raised to 1380°C at a rate of 900°C/h under a hydrogen-protected atmosphere, kept for 1.5 hours and then cooled with the furnace. The hardness of the obtained CuW alloy is 228HBW, and the electrical conductivity is 18.5MS/m , the coefficient of friction is 0.092.
实施例4Example 4
称取定量的钨粉，及钨粉质量的12％的诱导Cu粉，装入混料机中，按粉末总质量的1:2加入不锈钢磨球，以100r/min的转速混粉4h，将机械混合后的粉末进行喷蜡、晾干、筛粉处理，粉末通过冷压模具压制，压制压力700KN，保压45秒形成毛坯，将生坯和纯铜以及成分为CuAl1NiFe合金装在高纯石墨坩埚中置于气氛保护高温烧结炉中，在氢气保护气氛下以900℃/h的速度升温至1400℃，保温1h后随炉冷却，所得CuW合金的硬度为225HBW，电导率21.5MS/m，摩擦系数为0.090。Weigh a certain amount of tungsten powder and induced Cu powder with 12% of the mass of tungsten powder, put them into a mixer, add stainless steel grinding balls according to 1:2 of the total powder mass, mix the powder at a speed of 100r/min for 4h, and put The mechanically mixed powder is subjected to wax spraying, drying, and powder sieving. The powder is pressed through a cold pressing die with a pressing pressure of 700KN and held for 45 seconds to form a blank. The crucible is placed in an atmosphere-protected high-temperature sintering furnace, and the temperature is raised to 1400°C at a rate of 900°C/h under a hydrogen-protected atmosphere. After holding for 1 hour, it is cooled with the furnace. The hardness of the obtained CuW alloy is 225HBW, and the electrical conductivity is 21.5MS/m. The coefficient of friction is 0.090.
Claims (5)
- A kind of 1. method for improving CuW Wear Resistances, which is characterized in that be as follows：Step 1, tungsten powder and copper powder after mechanical mixture bonded, dry, sieve powder, obtain mixed-powder；Tungsten powder is the 70% of CuW alloy gross masses, and copper powder is the 5%~15% of tungsten powder quality；Step 2, mixed-powder step 1 obtained is pressed into blank using cold stamping die；Step 3, blank, fine copper block and Cu-Al-Ni-Fe alloys step 2 obtained is placed in high purity graphite crucible together It in atmosphere protection high temperature sintering furnace, is sintered under hydrogen shield atmosphere, infiltration, obtains CuW alloys.
- 2. the method according to claim 1 for improving CuW Wear Resistances, which is characterized in that by tungsten powder and copper in step 1 Powder is fitted into batch mixer, by the 1 of powder gross mass:2 add in stainless steel abrading-ball, and powder 4h is mixed with the rotating speed of 100r/min.
- 3. the method according to claim 1 for improving CuW Wear Resistances, which is characterized in that pressing pressure in step 2 300KN~700KN, dwell time 30s~50s.
- 4. the method according to claim 1 for improving CuW Wear Resistances, which is characterized in that the Cu-Al- in step 3 Ni-Fe alloys be using fine copper to CuAl10Ni5Fe5 alloys carry out melting dilute to obtain, wherein CuAl10Ni5Fe5 alloys with The mass ratio of fine copper is 1：1~3.
- 5. the method for the improvement CuW Wear Resistances according to claim 1 or 4, which is characterized in that be sintered in step 3 molten It is using hydrogen as protective gas to ooze, and is warming up to 1300~1400 DEG C with the speed of 900 DEG C/h, keeps the temperature 1~3h, furnace cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610999638.XA CN106591611B (en) | 2016-11-14 | 2016-11-14 | A kind of method for improving CuW Wear Resistances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610999638.XA CN106591611B (en) | 2016-11-14 | 2016-11-14 | A kind of method for improving CuW Wear Resistances |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106591611A CN106591611A (en) | 2017-04-26 |
| CN106591611B true CN106591611B (en) | 2018-05-29 |
Family
ID=58590952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610999638.XA Expired - Fee Related CN106591611B (en) | 2016-11-14 | 2016-11-14 | A kind of method for improving CuW Wear Resistances |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106591611B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107245594B (en) * | 2017-06-23 | 2019-02-26 | 歌尔股份有限公司 | The preparation method of powdered metallurgical material |
| CN111299594A (en) * | 2019-11-29 | 2020-06-19 | 安徽恒均粉末冶金科技股份有限公司 | Preparation method of copper-tungsten petal contact |
| CN113278836B (en) * | 2021-04-23 | 2022-04-08 | 西安理工大学 | Method for preparing CuW/low-carbon steel heterogeneous bimetallic material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101279365A (en) * | 2008-05-16 | 2008-10-08 | 西安理工大学 | A preparation method of a tungsten-copper electrical contact material with high resistance to arc ablation |
| CN101515513A (en) * | 2009-03-30 | 2009-08-26 | 西安理工大学 | Method for preparing TiC/CuW alloy contact material |
| CN102312146A (en) * | 2011-08-05 | 2012-01-11 | 西安理工大学 | Preparation method of CuW70 contact material |
-
2016
- 2016-11-14 CN CN201610999638.XA patent/CN106591611B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101279365A (en) * | 2008-05-16 | 2008-10-08 | 西安理工大学 | A preparation method of a tungsten-copper electrical contact material with high resistance to arc ablation |
| CN101515513A (en) * | 2009-03-30 | 2009-08-26 | 西安理工大学 | Method for preparing TiC/CuW alloy contact material |
| CN102312146A (en) * | 2011-08-05 | 2012-01-11 | 西安理工大学 | Preparation method of CuW70 contact material |
Non-Patent Citations (1)
| Title |
|---|
| 铜钨基金属陶瓷导板的研制;谢青青等;《物理测试》;20010215(第3期);第31-34页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106591611A (en) | 2017-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104946915B (en) | A kind of method for preparing fine-grained CuCr alloy | |
| CN103266258B (en) | Rare earth pre-alloyed powder and preparation method thereof | |
| CN100588483C (en) | A preparation method of a tungsten-copper electrical contact material with high resistance to arc ablation | |
| CN106591611B (en) | A kind of method for improving CuW Wear Resistances | |
| CN106222566B (en) | A kind of superhard material products rare earth special adjusts water atomization Fe-Cu pre-alloyed powders and preparation method thereof | |
| CN105220004A (en) | A kind of copper base electric contact composite material and preparation method thereof | |
| CN101786166A (en) | Method for in-situ preparation of Fe-Cu-based composite material in electric field based on powder metallurgy | |
| CN115846672B (en) | A method for preparing a high-strength and high-conductivity copper-based composite material for a lead frame | |
| CN104538213B (en) | Titanium boride enhancement silver-based contact material and preparing method thereof | |
| CN101224498A (en) | Method for preparing copper-tungsten contact material by using W-CuO powder | |
| CN109468487A (en) | A kind of tungsten carbide reinforced copper-based powder metallurgy friction material and preparation method thereof | |
| CN101229976A (en) | A kind of preparation method of high-performance WC/MgO nanocomposite material | |
| CN106282714A (en) | A kind of preparation method of self-lubricating copper tungsten material | |
| CN106381411B (en) | A kind of preparation method of copper-tungsten and CuW-CrCu integral materials | |
| CN106583690B (en) | A method of addition Ti element prepares CuW alloy | |
| JP2007211348A (en) | Cu-Cr ALLOY POWDER AND CONTACT MATERIAL FOR VACUUM CIRCUIT BREAKER USING THE SAME | |
| CN113897505B (en) | Preparation method of graphene reinforced copper-chromium electrical contact material | |
| CN101886185A (en) | A kind of preparation method of copper-chromium alloy billet | |
| CN106086493B (en) | A kind of method that fast low temperature sintering prepares CuCr alloy materials | |
| CN101540238B (en) | A preparation process of alloyed copper-chromium contact material | |
| CN107604199A (en) | A kind of preparation method of Cu Cr Fe vacuum contact materials | |
| CN103745842B (en) | A kind of Ag-based electrical contact material and preparation method thereof | |
| CN106566937A (en) | Method for improving hardness of CuW alloy | |
| CN104532050A (en) | Titanium nitride reinforced sliver base contact material and preparation method thereof | |
| CN115354203A (en) | High wear-resistant, high-temperature-resistant high-entropy matrix composite material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180529 Termination date: 20211114 |