CN102443717B - Low-cost elastic brass alloy - Google Patents
Low-cost elastic brass alloy Download PDFInfo
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- CN102443717B CN102443717B CN201210005315.6A CN201210005315A CN102443717B CN 102443717 B CN102443717 B CN 102443717B CN 201210005315 A CN201210005315 A CN 201210005315A CN 102443717 B CN102443717 B CN 102443717B
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- 229910001369 Brass Inorganic materials 0.000 title claims abstract description 43
- 239000010951 brass Substances 0.000 title claims abstract description 43
- 239000000956 alloy Substances 0.000 title claims abstract description 26
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 23
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000011572 manganese Substances 0.000 claims abstract description 17
- 239000011701 zinc Substances 0.000 claims abstract description 13
- 239000010949 copper Substances 0.000 claims abstract description 12
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 10
- 239000012535 impurity Substances 0.000 claims abstract description 9
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 9
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052802 copper Inorganic materials 0.000 claims abstract description 7
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 5
- 239000004411 aluminium Substances 0.000 claims 3
- 229910000906 Bronze Inorganic materials 0.000 abstract description 43
- 239000010974 bronze Substances 0.000 abstract description 42
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 abstract description 42
- BSPSZRDIBCCYNN-UHFFFAOYSA-N phosphanylidynetin Chemical compound [Sn]#P BSPSZRDIBCCYNN-UHFFFAOYSA-N 0.000 abstract description 41
- 238000000034 method Methods 0.000 abstract description 12
- 238000002360 preparation method Methods 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 7
- 238000009776 industrial production Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 description 31
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 230000032683 aging Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 238000000137 annealing Methods 0.000 description 5
- 238000005266 casting Methods 0.000 description 5
- 238000005097 cold rolling Methods 0.000 description 5
- 238000005098 hot rolling Methods 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000006698 induction Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000003801 milling Methods 0.000 description 4
- 238000011056 performance test Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 229910052790 beryllium Inorganic materials 0.000 description 2
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- FRWYFWZENXDZMU-UHFFFAOYSA-N 2-iodoquinoline Chemical compound C1=CC=CC2=NC(I)=CC=C21 FRWYFWZENXDZMU-UHFFFAOYSA-N 0.000 description 1
- 229910017518 Cu Zn Inorganic materials 0.000 description 1
- 229910017752 Cu-Zn Inorganic materials 0.000 description 1
- 229910017943 Cu—Zn Inorganic materials 0.000 description 1
- 241001572354 Lycaena hyllus Species 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- LTPBRCUWZOMYOC-UHFFFAOYSA-N beryllium oxide Inorganic materials O=[Be] LTPBRCUWZOMYOC-UHFFFAOYSA-N 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
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Abstract
一种低成本弹性黄铜合金，其特征是铜为69～72%重量，锌为23～26%重量，铝为3.3～3.6%重量，镍为0.1～1.0%重量，锰为0.12～0.53%重量，余量为不可避免的杂质。本发明的低成本弹性黄铜的硬度、弹性模量、延伸率与锡磷青铜相当，而强度高于锡磷青铜Y2状态的强度。将本发明产品制成接插件后进行插拔、单极吊重等试验，所获得的参数均符合国家标准。同时，本发明合金制备流程简单、易加工，适合产业化生产。该弹性黄铜性能与锡磷青铜性能相当，而原料成本仅为锡磷青铜原料成本的75%-80%，本发明的弹性黄铜合金可以代替锡磷青铜合金在接插件领域中应用。A low-cost elastic brass alloy, characterized in that copper is 69-72% by weight, zinc is 23-26% by weight, aluminum is 3.3-3.6% by weight, nickel is 0.1-1.0% by weight, and manganese is 0.12-0.53% by weight Weight, the balance is unavoidable impurities. The hardness, elastic modulus and elongation of the low-cost elastic brass of the present invention are equivalent to those of tin phosphor bronze, while the strength is higher than that of tin phosphor bronze in Y2 state. After the product of the present invention is made into a connector, tests such as plugging and unplugging, single-pole lifting, and the like are performed, and the obtained parameters all conform to national standards. At the same time, the preparation process of the alloy of the invention is simple, easy to process, and suitable for industrial production. The performance of the elastic brass is equivalent to that of tin phosphor bronze, and the raw material cost is only 75%-80% of that of the tin phosphor bronze. The elastic brass alloy of the invention can replace the tin phosphor bronze alloy and be used in the field of connectors.
Description
技术领域 technical field
本发明涉及一种代替锡磷青铜材料的低成本弹性黄铜合金。 The present invention relates to a low cost elastic brass alloy replacing tin phosphor bronze material.
背景技术 Background technique
高弹性铜基材料广泛应用于电器接插件、弹簧、开关、触头等各种弹性元件领域及电子、通讯、仪表等工业领域。目前，高弹性铜基材料以铍青铜、锡磷青铜等材料为主。但是，铍青铜存在工作温度低，生产工艺复杂，铍氧化物有毒，危害人体，价格昂贵等缺点，而锡磷青铜中的合金元素锡价格昂贵、制造能耗高、成本高。同时，我国正处在经济高速增长时期，电子、电气等行业发展迅速，对锡磷青铜带材的需求增长很快，以年均12%以上的速度增长。据预测，2011年国内锡磷青铜带的需求量将在20万吨以上。因此，国内外致力于研究锡磷青铜的替代品-低成本高弹性铜基材料。但迄今为止，还没有开发出一种成本低弹性好、能够替代锡磷青铜作接插件应用的新型弹性合金材料。 Highly elastic copper-based materials are widely used in the fields of various elastic components such as electrical connectors, springs, switches, contacts, and industrial fields such as electronics, communications, and instruments. At present, high-elastic copper-based materials are mainly beryllium bronze, tin phosphor bronze and other materials. However, beryllium bronze has disadvantages such as low working temperature, complex production process, poisonous beryllium oxide, harmful to human body, and high price, while the alloying element tin in tin phosphor bronze is expensive, high energy consumption, and high cost. At the same time, our country is in a period of rapid economic growth, and the electronics, electrical and other industries are developing rapidly. The demand for tin phosphor bronze strips is growing rapidly, with an average annual growth rate of more than 12%. It is predicted that in 2011 the domestic demand for tin phosphor bronze strips will be over 200,000 tons. Therefore, both at home and abroad are committed to researching the substitute of tin phosphor bronze-copper-based materials with low cost and high elasticity. But so far, a new type of elastic alloy material with low cost and good elasticity, which can replace tin phosphor bronze for connector applications has not been developed.
CN101050494B公告了一种弹性黄铜合金材料及其生产方法，但其含Ni量达到4-5%，因镍的价格比锡高，因此，该发明的弹性黄铜合金成本很高。 CN101050494B announced a kind of elastic brass alloy material and production method thereof, but its Ni content reaches 4-5%, because the price of nickel is higher than tin, therefore, the elastic brass alloy cost of this invention is very high.
发明内容 Contents of the invention
本发明的目的是开发出一种低成本弹性黄铜合金材料，以替代锡磷青铜在接插件等领域的应用。 The purpose of the present invention is to develop a low-cost elastic brass alloy material to replace the application of tin phosphor bronze in connectors and other fields.
一种低成本弹性黄铜合金，其特征是铜为69～72%重量，锌为23～26%重量，铝为3.3～3.6%重量，镍为0.1～1.0%重量，锰为0.12～0.53%重量，余量为不可避免的杂质。 A low-cost elastic brass alloy, characterized in that copper is 69-72% by weight, zinc is 23-26% by weight, aluminum is 3.3-3.6% by weight, nickel is 0.1-1.0% by weight, and manganese is 0.12-0.53% by weight Weight, the balance is unavoidable impurities.
本发明的弹性黄铜制备工艺采用铁模铸造，热轧开坯，冷轧，退火，酸洗等工艺流程。 The elastic brass preparation process of the present invention adopts technological processes such as iron mold casting, hot rolling blanking, cold rolling, annealing, and pickling.
铝元素加入后缩小α相区，形成β相的趋势大，强化效果好。在熔炼中能形成氧化铝保护膜，阻止锌蒸发，从而减少锌烧损。同时，铝能提高耐磨性、耐蚀性、弹性等。在成品中，Al的表面离子化倾向比锌的大，优先形成致密而坚固的氧化铝膜，可防止合金的进一步氧化。但Al含量高时，会出现γ相，提高合金的强度和硬度，大幅度降低塑性，不利于后道加工。因此，Al加入量一般控制在1-4%左右。如HAl77-2、HAl60-1-1、HAl59-3-2经过加工后弹性模量分别可以达到102、105、100Gpa。 After the addition of aluminum element, the α-phase area is reduced, and the tendency of forming β-phase is large, and the strengthening effect is good. A protective film of alumina can be formed during smelting to prevent zinc from evaporating, thereby reducing zinc burning loss. At the same time, aluminum can improve wear resistance, corrosion resistance, elasticity, etc. In the finished product, the surface ionization tendency of Al is greater than that of zinc, and a dense and strong aluminum oxide film is preferentially formed to prevent further oxidation of the alloy. However, when the Al content is high, the γ phase will appear, which increases the strength and hardness of the alloy and greatly reduces the plasticity, which is not conducive to subsequent processing. Therefore, the amount of Al added is generally controlled at about 1-4%. For example, the elastic modulus of HAl77-2, HAl60-1-1, and HAl59-3-2 can reach 102, 105, and 100 Gpa respectively after processing.
镍在黄铜中使α相区扩大，向高锌黄铜中添加镍，可获得含有少量β相的高强度合金。同时具有提高强度、韧性、抗脱锌及抗应力腐蚀开裂作用，且压力加工性能较好。例如HNi65-5弹性模量可以达到112Gpa。有研究表明：加入Ni可以达到显著细化晶粒的效果。值得注意的是，在黄铜中加入一定量的镍和铝，具有显著的回火硬化效应。 Nickel expands the α-phase region in brass, and adding nickel to high-zinc brass can obtain a high-strength alloy containing a small amount of β-phase. At the same time, it has the functions of improving strength, toughness, dezincification resistance and stress corrosion cracking resistance, and has good pressure processing performance. For example, the elastic modulus of HNi65-5 can reach 112Gpa. Studies have shown that adding Ni can achieve a significant grain refinement effect. It is worth noting that adding a certain amount of nickel and aluminum to brass has a significant temper hardening effect.
Mn使得α相区缩小，但作用不大，因此对黄铜显微组织的影响较小。同时，Mn对黄铜具有显著的固溶强化、抗腐蚀、提高加工性能的作用。例如HMn58-2的弹性模量可以达到100Gpa。值得注意的是，由于合金在低于375℃的温度下，Mn在Cu中的固溶度下降，当Mn含量超过4%时，会析出部分富Mn的ξ相，ξ相为硬脆相，使合金性能降低。同时，Mn的加入严重降低材料的电导率，在对具有一定电导率的合金设计时，控制Mn含量就显得尤为重要。 Mn shrinks the α-phase region, but it has little effect, so it has little influence on the microstructure of brass. At the same time, Mn has significant solid solution strengthening, anti-corrosion, and improving processing properties for brass. For example, the elastic modulus of HMn58-2 can reach 100Gpa. It is worth noting that the solid solubility of Mn in Cu decreases when the temperature of the alloy is lower than 375 °C. When the Mn content exceeds 4%, a part of the Mn-rich ξ phase will be precipitated, and the ξ phase is a hard and brittle phase. reduce the properties of the alloy. At the same time, the addition of Mn seriously reduces the electrical conductivity of the material. When designing an alloy with a certain electrical conductivity, it is particularly important to control the Mn content.
Al与Ni具有形成Al3Ni化合物的趋势，通过弥散强化、条幅分解、固溶强化等机理显著提高材料的性能，而Mn固溶于Cu-Zn基体中，显著提高基体的性能，并促进Al与Ni形成Al3Ni化合物。三种元素的综合作用将大大地提高材料的性能，尤其是弹性性能。 Al and Ni have a tendency to form Al 3 Ni compounds, which significantly improve the performance of the material through mechanisms such as dispersion strengthening, strip decomposition, and solid solution strengthening, while Mn dissolves in the Cu-Zn matrix, which significantly improves the performance of the matrix and promotes Al. Form Al 3 Ni compound with Ni. The combined effect of the three elements will greatly improve the performance of the material, especially the elastic performance.
本发明的低成本弹性黄铜的硬度、弹性模量、延伸率与锡磷青铜相当，而强度高于锡磷青铜Y2状态的强度。将本发明产品制成接插件后进行插拔、单极吊重等试验，所获得的参数均符合国家标准。同时，本发明合金制备流程简单、易加工，适合产业化生产。该弹性黄铜性能与锡磷青铜性能相当，而原料成本仅为锡磷青铜原料成本的75%-80%。 The hardness, elastic modulus and elongation of the low-cost elastic brass of the present invention are equivalent to those of tin phosphor bronze, while the strength is higher than that of tin phosphor bronze in Y2 state. After the product of the present invention is made into a connector, tests such as plugging and unplugging, single-pole lifting, and the like are performed, and the obtained parameters all conform to national standards. At the same time, the preparation process of the alloy of the invention is simple, easy to process, and suitable for industrial production. The performance of the elastic brass is equivalent to that of tin phosphor bronze, and the raw material cost is only 75%-80% of the raw material cost of tin phosphor bronze.
具体实施方式 Detailed ways
以下结合附表实施例对本发明作进一步描述。 The present invention will be further described below in conjunction with the accompanying table embodiment.
实施例1： Example 1:
原材料按69.58%重量的Cu，25.75%重量的Zn，3.56%重量的Al，0.59%重量的Ni，0.41%重量的Mn，余量为不可避免杂质的配比。采用50Kg中频感应炉熔炼，熔炼温度1100-1250℃，浇注温度1080-1150℃。铁模浇注，铸锭尺寸为60mm（厚）×120mm（宽）×450mm（长）。铸锭经铣面后的尺寸为48mm（厚）×120mm（宽）×450mm（长）。然后按照热轧-粗轧-退火-中轧-退火-预精轧-退火-酸洗-精轧工艺制备。经铣面后的铸锭首先在步进炉中加热60-120分钟，温度为750-850℃，然后采用φ305二辊热轧机轧制成3.5mm厚的板坯。粗轧和中轧均采用φ250×350四辊轧机轧制，粗轧、中轧后板坯的厚度分别为2.0mm、1.1mm。应用φ80-φ180四辊冷轧机进行板带的预精轧和精轧,预精轧及精轧后板坯的厚度分别为0.6mm、0.5mm。制备过程中退火的工艺参数为：温度600-750℃，保温时间0.5-2小时。 The raw materials are 69.58% by weight of Cu, 25.75% by weight of Zn, 3.56% by weight of Al, 0.59% by weight of Ni, 0.41% by weight of Mn, and the balance is the proportion of unavoidable impurities. It is melted in a 50Kg intermediate frequency induction furnace, the melting temperature is 1100-1250°C, and the pouring temperature is 1080-1150°C. Iron mold casting, the ingot size is 60mm (thickness) × 120mm (width) × 450mm (length). The size of the ingot after face milling is 48mm (thickness) x 120mm (width) x 450mm (length). Then it is prepared according to the process of hot rolling-rough rolling-annealing-intermediate rolling-annealing-pre-finishing rolling-annealing-pickling-finishing rolling. The face-milled ingot is first heated in a walking furnace for 60-120 minutes at a temperature of 750-850°C, and then rolled into a 3.5mm-thick slab by a φ305 two-roller hot rolling mill. Rough rolling and intermediate rolling are both rolled by φ250×350 four-high rolling mill, and the thickness of the slab after rough rolling and intermediate rolling is 2.0mm and 1.1mm respectively. The φ80-φ180 four-high cold rolling mill is used for the pre-finishing and finishing rolling of the strip, and the thickness of the slab after the pre-finishing and finishing rolling is 0.6mm and 0.5mm respectively. The technological parameters of annealing in the preparation process are: temperature 600-750° C., holding time 0.5-2 hours.
由上述方法加工得到的厚度为0.5mm弹性黄铜成品经检测，其弹性模量、延伸率与锡磷青铜相当，而抗拉强度、电导率则高于锡磷青铜的相应性能。其性能对比如下表所示。 The elastic brass finished product with a thickness of 0.5 mm processed by the above method has been tested, and its elastic modulus and elongation are equivalent to those of tin phosphor bronze, while its tensile strength and electrical conductivity are higher than those of tin phosphor bronze. The performance comparison is shown in the table below.
弹性黄铜及锡磷青铜的性能对比表 Performance comparison table of elastic brass and tin phosphor bronze
弹性黄铜产品制成接插件后，进行接插件性能测试，经老化、插拔5000次后，其最小拔出力单极不脱落均为3N，高于国家标准1.5N。本发明的黄铜合金产品可以替代锡磷青铜在接插件领域应用。 After the elastic brass product is made into a connector, the performance test of the connector is carried out. After aging and plugging and unplugging for 5000 times, the minimum pull-out force of the single pole without falling off is 3N, which is higher than the national standard of 1.5N. The brass alloy product of the invention can be used in the field of connectors instead of tin phosphor bronze.
经老化、插拔5000次后样品的接插件性能 The connector performance of the sample after aging and plugging and unplugging for 5000 times
实施例2 Example 2
原材料按71.52%重量的Cu，23.89%重量的Zn，3.37%重量的Al，0.57%重量的Ni，0.53%重量的Mn，余量为不可避免杂质的配比。采用50Kg中频感应炉熔炼，熔炼温度1100-1250℃，浇注温度1080-1150℃。铁模浇注，铸锭尺寸为60mm（厚）×120mm（宽）×450mm（长）。铸锭经铣面后的尺寸为48mm（厚）×120mm（宽）×450mm（长）。然后按照热轧-粗轧-退火-中轧-退火-预精轧-退火-酸洗-精轧工艺制备。经铣面后的铸锭首先在步进炉中加热60-120分钟，温度为750-850℃，然后采用φ305二辊热轧机轧制成3.5mm厚的板坯。粗轧和中轧均采用φ250×350四辊轧机轧制，粗轧、中轧后板坯的厚度分别为2.0mm、1.1mm。应用φ80-φ180四辊冷轧机进行板带的预精轧和精轧,预精轧及精轧后板坯的厚度分别为0.6mm、0.5mm。制备过程中退火的工艺参数为：温度600-750℃，保温时间0.5-2小时。 The raw materials are 71.52% by weight of Cu, 23.89% by weight of Zn, 3.37% by weight of Al, 0.57% by weight of Ni, 0.53% by weight of Mn, and the balance is the proportion of unavoidable impurities. It is melted in a 50Kg intermediate frequency induction furnace, the melting temperature is 1100-1250°C, and the pouring temperature is 1080-1150°C. Iron mold casting, the ingot size is 60mm (thickness) × 120mm (width) × 450mm (length). The size of the ingot after face milling is 48mm (thickness) x 120mm (width) x 450mm (length). Then it is prepared according to the process of hot rolling-rough rolling-annealing-intermediate rolling-annealing-pre-finishing rolling-annealing-pickling-finishing rolling. The face-milled ingot is first heated in a walking furnace for 60-120 minutes at a temperature of 750-850°C, and then rolled into a 3.5mm-thick slab by a φ305 two-roller hot rolling mill. Rough rolling and intermediate rolling are both rolled by φ250×350 four-high rolling mill, and the thickness of the slab after rough rolling and intermediate rolling is 2.0mm and 1.1mm respectively. The φ80-φ180 four-high cold rolling mill is used for the pre-finishing and finishing rolling of the strip, and the thickness of the slab after the pre-finishing and finishing rolling is 0.6mm and 0.5mm respectively. The technological parameters of annealing in the preparation process are: temperature 600-750° C., holding time 0.5-2 hours.
由上述方法加工得到的厚度为0.5mm弹性黄铜成品经检测，其弹性模量、延伸率与锡磷青铜相当，而抗拉强度、电导率则高于锡磷青铜的相应性能。其性能对比如下表所示。 The elastic brass finished product with a thickness of 0.5 mm processed by the above method has been tested, and its elastic modulus and elongation are equivalent to those of tin phosphor bronze, while its tensile strength and electrical conductivity are higher than those of tin phosphor bronze. The performance comparison is shown in the table below.
弹性黄铜及锡磷青铜的性能对比表 Performance comparison table of elastic brass and tin phosphor bronze
弹性黄铜产品制成接插件后，进行接插件性能测试，经老化、插拔5000次后，其最小拔出力单极不脱落均为3N，高于国家标准1.5N。本发明的黄铜合金产品可以替代锡磷青铜在接插件领域应用。 After the elastic brass product is made into a connector, the performance test of the connector is carried out. After aging and plugging and unplugging for 5000 times, the minimum pull-out force of the single pole without falling off is 3N, which is higher than the national standard of 1.5N. The brass alloy product of the invention can be used in the field of connectors instead of tin phosphor bronze.
经老化、插拔5000次后样品的接插件性能 The connector performance of the sample after aging and plugging and unplugging for 5000 times
实施例3 Example 3
原材料按71.61%重量的Cu，23.7%重量的Zn，3.37%重量的Al，0.53%重量的Ni，0.28%重量的Mn，余量为不可避免杂质的配比。采用50Kg中频感应炉熔炼，熔炼温度1100-1250℃，浇注温度1080-1150℃。铁模浇注，铸锭尺寸为60mm（厚）×120mm（宽）×450mm（长）。铸锭经铣面后的尺寸为48mm（厚）×120mm（宽）×450mm（长）。然后按照热轧-粗轧-退火-中轧-退火-预精轧-退火-酸洗-精轧工艺制备。经铣面后的铸锭首先在步进炉中加热60-120分钟，温度为750-850℃，然后采用φ305二辊热轧机轧制成3.5mm厚的板坯。粗轧和中轧均采用φ250×350四辊轧机轧制，粗轧、中轧后板坯的厚度分别为2.0mm、1.1mm。应用φ80-φ180四辊冷轧机进行板带的预精轧和精轧,预精轧及精轧后板坯的厚度分别为0.6mm、0.5mm。制备过程中退火的工艺参数为：温度600-750℃，保温时间0.5-2小时。 The raw materials are 71.61% by weight of Cu, 23.7% by weight of Zn, 3.37% by weight of Al, 0.53% by weight of Ni, 0.28% by weight of Mn, and the balance is the proportion of unavoidable impurities. It is melted in a 50Kg intermediate frequency induction furnace, the melting temperature is 1100-1250°C, and the pouring temperature is 1080-1150°C. Iron mold casting, the ingot size is 60mm (thickness) × 120mm (width) × 450mm (length). The size of the ingot after face milling is 48mm (thickness) x 120mm (width) x 450mm (length). Then it is prepared according to the process of hot rolling-rough rolling-annealing-intermediate rolling-annealing-pre-finishing rolling-annealing-pickling-finishing rolling. The face-milled ingot is first heated in a walking furnace for 60-120 minutes at a temperature of 750-850°C, and then rolled into a 3.5mm-thick slab by a φ305 two-roller hot rolling mill. Rough rolling and intermediate rolling are both rolled by φ250×350 four-high rolling mill, and the thickness of the slab after rough rolling and intermediate rolling is 2.0mm and 1.1mm respectively. The φ80-φ180 four-high cold rolling mill is used for the pre-finishing and finishing rolling of the strip, and the thickness of the slab after the pre-finishing and finishing rolling is 0.6mm and 0.5mm respectively. The technological parameters of annealing in the preparation process are: temperature 600-750° C., holding time 0.5-2 hours.
由上述方法加工得到的厚度为0.5mm弹性黄铜成品经检测，其弹性模量、延伸率与锡磷青铜相当，而抗拉强度、电导率则高于锡磷青铜的相应性能。其性能对比如下表所示。 The elastic brass finished product with a thickness of 0.5 mm processed by the above method has been tested, and its elastic modulus and elongation are equivalent to those of tin phosphor bronze, while its tensile strength and electrical conductivity are higher than those of tin phosphor bronze. The performance comparison is shown in the table below.
弹性黄铜及锡磷青铜的性能对比表 Performance comparison table of elastic brass and tin phosphor bronze
弹性黄铜产品制成接插件后，进行接插件性能测试，经老化、插拔5000次后，其最小拔出力单极不脱落均为3N，高于国家标准1.5N。本发明的黄铜合金产品可以替代锡磷青铜在接插件领域应用。 After the elastic brass product is made into a connector, the performance test of the connector is carried out. After aging and plugging and unplugging for 5000 times, the minimum pull-out force of the single pole without falling off is 3N, which is higher than the national standard of 1.5N. The brass alloy product of the invention can be used in the field of connectors instead of tin phosphor bronze.
经老化、插拔5000次后样品的接插件性能 The connector performance of the sample after aging and plugging and unplugging for 5000 times
实施例4 Example 4
原材料按71.82%重量的Cu，23.93%重量的Zn，3.49%重量的Al，0.54%重量的Ni，0.12%重量的Mn，余量为不可避免杂质的配比。采用50Kg中频感应炉熔炼，熔炼温度1100-1250℃，浇注温度1080-1150℃。铁模浇注，铸锭尺寸为60mm（厚）×120mm（宽）×450mm（长）。铸锭经铣面后的尺寸为48mm（厚）×120mm（宽）×450mm（长）。然后按照热轧-粗轧-退火-中轧-退火-预精轧-退火-酸洗-精轧工艺制备。经铣面后的铸锭首先在步进炉中加热60-120分钟，温度为750-850℃，然后采用φ305二辊热轧机轧制成3.5mm厚的板坯。粗轧和中轧均采用φ250×350四辊轧机轧制，粗轧、中轧后板坯的厚度分别为2.0mm、1.1mm。应用φ80-φ180四辊冷轧机进行板带的预精轧和精轧,预精轧及精轧后板坯的厚度分别为0.6mm、0.5mm。制备过程中退火的工艺参数为：温度600-750℃，保温时间0.5-2小时。 The raw materials are 71.82% by weight of Cu, 23.93% by weight of Zn, 3.49% by weight of Al, 0.54% by weight of Ni, 0.12% by weight of Mn, and the balance is the proportion of unavoidable impurities. It is melted in a 50Kg intermediate frequency induction furnace, the melting temperature is 1100-1250°C, and the pouring temperature is 1080-1150°C. Iron mold casting, the ingot size is 60mm (thickness) × 120mm (width) × 450mm (length). The size of the ingot after face milling is 48mm (thickness) x 120mm (width) x 450mm (length). Then it is prepared according to the process of hot rolling-rough rolling-annealing-intermediate rolling-annealing-pre-finishing rolling-annealing-pickling-finishing rolling. The face-milled ingot is first heated in a walking furnace for 60-120 minutes at a temperature of 750-850°C, and then rolled into a 3.5mm-thick slab by a φ305 two-roller hot rolling mill. Both rough rolling and intermediate rolling are rolled by φ250×350 four-roll mill, and the thickness of the slab after rough rolling and intermediate rolling are 2.0mm and 1.1mm respectively. The φ80-φ180 four-high cold rolling mill is used for the pre-finishing and finishing rolling of the strip, and the thickness of the slab after the pre-finishing and finishing rolling is 0.6mm and 0.5mm respectively. The technological parameters of annealing in the preparation process are: temperature 600-750° C., holding time 0.5-2 hours.
由上述方法加工得到的厚度为0.5mm弹性黄铜成品经检测，其弹性模量、延伸率与锡磷青铜相当，而抗拉强度、电导率则高于锡磷青铜的相应性能。其性能对比如下表所示。 The elastic brass finished product with a thickness of 0.5 mm processed by the above method has been tested, and its elastic modulus and elongation are equivalent to those of tin phosphor bronze, while its tensile strength and electrical conductivity are higher than those of tin phosphor bronze. The performance comparison is shown in the table below.
弹性黄铜及锡磷青铜的性能对比表 Performance comparison table of elastic brass and tin phosphor bronze
弹性黄铜产品制成接插件后，进行接插件性能测试，经老化、插拔5000次后，其最小拔出力单极不脱落均为3N，高于国家标准1.5N。本发明的黄铜合金产品可以替代锡磷青铜在接插件领域应用。 After the elastic brass product is made into a connector, the performance test of the connector is carried out. After aging and plugging and unplugging for 5000 times, the minimum pull-out force of the single pole without falling off is 3N, which is higher than the national standard of 1.5N. The brass alloy product of the invention can be used in the field of connectors instead of tin phosphor bronze.
经老化、插拔5000次后样品的接插件性能 The connector performance of the sample after aging and plugging and unplugging for 5000 times
综上所述，本发明的弹性黄铜合金的抗拉强度、弹性模量分别达到618MPa以上、110Gpa以上，性能优异。将本发明的弹性黄铜合金与锡磷青铜的性能进行比较，延伸率、弹性模量与锡磷青铜相当，而抗拉强度、电导率高于锡磷青铜的相应性能，完全可替代锡磷青铜在接插件领域应用。 In summary, the tensile strength and elastic modulus of the elastic brass alloy of the present invention are above 618 MPa and above 110 GPa, respectively, and have excellent performance. Comparing the properties of the elastic brass alloy of the present invention with that of tin phosphor bronze, the elongation and elastic modulus are equivalent to those of tin phosphor bronze, while the tensile strength and electrical conductivity are higher than those of tin phosphor bronze, which can completely replace tin phosphor bronze. Bronze is used in the field of connectors.
以上实施例是对本专利的进一步说明和解释，而不是对本发明的限制，在本发明的精神和权力保护范围，所做的任何修改，都落入本发明的保护范围。 The above embodiment is a further description and explanation of this patent, rather than a limitation of the present invention. Any modification made within the spirit and scope of protection of the present invention will fall into the protection scope of the present invention.
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