CN103567711B - 一种银镁镍合金摩擦环的制备方法 - Google Patents
一种银镁镍合金摩擦环的制备方法 Download PDFInfo
- Publication number
- CN103567711B CN103567711B CN201210262482.9A CN201210262482A CN103567711B CN 103567711 B CN103567711 B CN 103567711B CN 201210262482 A CN201210262482 A CN 201210262482A CN 103567711 B CN103567711 B CN 103567711B
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- silver
- magnesium
- nickel
- ingot casting
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- -1 silver-magnesium-nickel Chemical compound 0.000 title claims abstract description 30
- 229910000990 Ni alloy Inorganic materials 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 58
- 238000005266 casting Methods 0.000 claims abstract description 30
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 27
- BQCADISMDOOEFD-UHFFFAOYSA-N silver Chemical compound data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0nMS4wJyBlbmNvZGluZz0naXNvLTg4NTktMSc/Pgo8c3ZnIHZlcnNpb249JzEuMScgYmFzZVByb2ZpbGU9J2Z1bGwnCiAgICAgICAgICAgICAgeG1sbnM9J2h0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnJwogICAgICAgICAgICAgICAgICAgICAgeG1sbnM6cmRraXQ9J2h0dHA6Ly93d3cucmRraXQub3JnL3htbCcKICAgICAgICAgICAgICAgICAgICAgIHhtbG5zOnhsaW5rPSdodHRwOi8vd3d3LnczLm9yZy8xOTk5L3hsaW5rJwogICAgICAgICAgICAgICAgICB4bWw6c3BhY2U9J3ByZXNlcnZlJwp3aWR0aD0nMzAwcHgnIGhlaWdodD0nMzAwcHgnIHZpZXdCb3g9JzAgMCAzMDAgMzAwJz4KPCEtLSBFTkQgT0YgSEVBREVSIC0tPgo8cmVjdCBzdHlsZT0nb3BhY2l0eToxLjA7ZmlsbDojRkZGRkZGO3N0cm9rZTpub25lJyB3aWR0aD0nMzAwLjAnIGhlaWdodD0nMzAwLjAnIHg9JzAuMCcgeT0nMC4wJz4gPC9yZWN0Pgo8dGV4dCB4PScxMzguMCcgeT0nMTcwLjAnIGNsYXNzPSdhdG9tLTAnIHN0eWxlPSdmb250LXNpemU6NDBweDtmb250LXN0eWxlOm5vcm1hbDtmb250LXdlaWdodDpub3JtYWw7ZmlsbC1vcGFjaXR5OjE7c3Ryb2tlOm5vbmU7Zm9udC1mYW1pbHk6c2Fucy1zZXJpZjt0ZXh0LWFuY2hvcjpzdGFydDtmaWxsOiMzQjQxNDMnID5BPC90ZXh0Pgo8dGV4dCB4PScxNjUuNicgeT0nMTcwLjAnIGNsYXNzPSdhdG9tLTAnIHN0eWxlPSdmb250LXNpemU6NDBweDtmb250LXN0eWxlOm5vcm1hbDtmb250LXdlaWdodDpub3JtYWw7ZmlsbC1vcGFjaXR5OjE7c3Ryb2tlOm5vbmU7Zm9udC1mYW1pbHk6c2Fucy1zZXJpZjt0ZXh0LWFuY2hvcjpzdGFydDtmaWxsOiMzQjQxNDMnID5nPC90ZXh0Pgo8cGF0aCBkPSdNIDE4OS44LDE1MC4wIEwgMTg5LjgsMTQ5LjggTCAxODkuOCwxNDkuNyBMIDE4OS44LDE0OS41IEwgMTg5LjcsMTQ5LjMgTCAxODkuNiwxNDkuMiBMIDE4OS42LDE0OS4wIEwgMTg5LjUsMTQ4LjkgTCAxODkuNCwxNDguNyBMIDE4OS4zLDE0OC42IEwgMTg5LjEsMTQ4LjUgTCAxODkuMCwxNDguNCBMIDE4OC44LDE0OC4zIEwgMTg4LjcsMTQ4LjIgTCAxODguNSwxNDguMSBMIDE4OC40LDE0OC4xIEwgMTg4LjIsMTQ4LjAgTCAxODguMCwxNDguMCBMIDE4Ny45LDE0OC4wIEwgMTg3LjcsMTQ4LjAgTCAxODcuNSwxNDguMCBMIDE4Ny40LDE0OC4xIEwgMTg3LjIsMTQ4LjEgTCAxODcuMCwxNDguMiBMIDE4Ni45LDE0OC4yIEwgMTg2LjcsMTQ4LjMgTCAxODYuNiwxNDguNCBMIDE4Ni41LDE0OC41IEwgMTg2LjMsMTQ4LjcgTCAxODYuMiwxNDguOCBMIDE4Ni4xLDE0OC45IEwgMTg2LjAsMTQ5LjEgTCAxODYuMCwxNDkuMiBMIDE4NS45LDE0OS40IEwgMTg1LjksMTQ5LjYgTCAxODUuOCwxNDkuNyBMIDE4NS44LDE0OS45IEwgMTg1LjgsMTUwLjEgTCAxODUuOCwxNTAuMyBMIDE4NS45LDE1MC40IEwgMTg1LjksMTUwLjYgTCAxODYuMCwxNTAuOCBMIDE4Ni4wLDE1MC45IEwgMTg2LjEsMTUxLjEgTCAxODYuMiwxNTEuMiBMIDE4Ni4zLDE1MS4zIEwgMTg2LjUsMTUxLjUgTCAxODYuNiwxNTEuNiBMIDE4Ni43LDE1MS43IEwgMTg2LjksMTUxLjggTCAxODcuMCwxNTEuOCBMIDE4Ny4yLDE1MS45IEwgMTg3LjQsMTUxLjkgTCAxODcuNSwxNTIuMCBMIDE4Ny43LDE1Mi4wIEwgMTg3LjksMTUyLjAgTCAxODguMCwxNTIuMCBMIDE4OC4yLDE1Mi4wIEwgMTg4LjQsMTUxLjkgTCAxODguNSwxNTEuOSBMIDE4OC43LDE1MS44IEwgMTg4LjgsMTUxLjcgTCAxODkuMCwxNTEuNiBMIDE4OS4xLDE1MS41IEwgMTg5LjMsMTUxLjQgTCAxODkuNCwxNTEuMyBMIDE4OS41LDE1MS4xIEwgMTg5LjYsMTUxLjAgTCAxODkuNiwxNTAuOCBMIDE4OS43LDE1MC43IEwgMTg5LjgsMTUwLjUgTCAxODkuOCwxNTAuMyBMIDE4OS44LDE1MC4yIEwgMTg5LjgsMTUwLjAgTCAxODcuOCwxNTAuMCBaJyBzdHlsZT0nZmlsbDojMDAwMDAwO2ZpbGwtcnVsZTpldmVub2RkO2ZpbGwtb3BhY2l0eToxO3N0cm9rZTojMDAwMDAwO3N0cm9rZS13aWR0aDowLjBweDtzdHJva2UtbGluZWNhcDpidXR0O3N0cm9rZS1saW5lam9pbjptaXRlcjtzdHJva2Utb3BhY2l0eToxOycgLz4KPC9zdmc+Cg== data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0nMS4wJyBlbmNvZGluZz0naXNvLTg4NTktMSc/Pgo8c3ZnIHZlcnNpb249JzEuMScgYmFzZVByb2ZpbGU9J2Z1bGwnCiAgICAgICAgICAgICAgeG1sbnM9J2h0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnJwogICAgICAgICAgICAgICAgICAgICAgeG1sbnM6cmRraXQ9J2h0dHA6Ly93d3cucmRraXQub3JnL3htbCcKICAgICAgICAgICAgICAgICAgICAgIHhtbG5zOnhsaW5rPSdodHRwOi8vd3d3LnczLm9yZy8xOTk5L3hsaW5rJwogICAgICAgICAgICAgICAgICB4bWw6c3BhY2U9J3ByZXNlcnZlJwp3aWR0aD0nODVweCcgaGVpZ2h0PSc4NXB4JyB2aWV3Qm94PScwIDAgODUgODUnPgo8IS0tIEVORCBPRiBIRUFERVIgLS0+CjxyZWN0IHN0eWxlPSdvcGFjaXR5OjEuMDtmaWxsOiNGRkZGRkY7c3Ryb2tlOm5vbmUnIHdpZHRoPSc4NS4wJyBoZWlnaHQ9Jzg1LjAnIHg9JzAuMCcgeT0nMC4wJz4gPC9yZWN0Pgo8dGV4dCB4PSczNS4wJyB5PSc1My42JyBjbGFzcz0nYXRvbS0wJyBzdHlsZT0nZm9udC1zaXplOjIzcHg7Zm9udC1zdHlsZTpub3JtYWw7Zm9udC13ZWlnaHQ6bm9ybWFsO2ZpbGwtb3BhY2l0eToxO3N0cm9rZTpub25lO2ZvbnQtZmFtaWx5OnNhbnMtc2VyaWY7dGV4dC1hbmNob3I6c3RhcnQ7ZmlsbDojM0I0MTQzJyA+QTwvdGV4dD4KPHRleHQgeD0nNTEuMCcgeT0nNTMuNicgY2xhc3M9J2F0b20tMCcgc3R5bGU9J2ZvbnQtc2l6ZToyM3B4O2ZvbnQtc3R5bGU6bm9ybWFsO2ZvbnQtd2VpZ2h0Om5vcm1hbDtmaWxsLW9wYWNpdHk6MTtzdHJva2U6bm9uZTtmb250LWZhbWlseTpzYW5zLXNlcmlmO3RleHQtYW5jaG9yOnN0YXJ0O2ZpbGw6IzNCNDE0MycgPmc8L3RleHQ+CjxwYXRoIGQ9J00gNjcuMyw0Mi4wIEwgNjcuMyw0MS45IEwgNjcuMyw0MS44IEwgNjcuMiw0MS43IEwgNjcuMiw0MS42IEwgNjcuMiw0MS41IEwgNjcuMSw0MS40IEwgNjcuMSw0MS4zIEwgNjcuMCw0MS4zIEwgNjYuOSw0MS4yIEwgNjYuOSw0MS4xIEwgNjYuOCw0MS4xIEwgNjYuNyw0MS4wIEwgNjYuNiw0MS4wIEwgNjYuNSw0MC45IEwgNjYuNCw0MC45IEwgNjYuMyw0MC45IEwgNjYuMiw0MC44IEwgNjYuMSw0MC44IEwgNjYuMCw0MC44IEwgNjUuOSw0MC45IEwgNjUuOCw0MC45IEwgNjUuNyw0MC45IEwgNjUuNyw0MC45IEwgNjUuNiw0MS4wIEwgNjUuNSw0MS4wIEwgNjUuNCw0MS4xIEwgNjUuMyw0MS4yIEwgNjUuMyw0MS4yIEwgNjUuMiw0MS4zIEwgNjUuMSw0MS40IEwgNjUuMSw0MS41IEwgNjUuMCw0MS42IEwgNjUuMCw0MS43IEwgNjUuMCw0MS44IEwgNjUuMCw0MS45IEwgNjUuMCw0Mi4wIEwgNjUuMCw0Mi4wIEwgNjUuMCw0Mi4xIEwgNjUuMCw0Mi4yIEwgNjUuMCw0Mi4zIEwgNjUuMCw0Mi40IEwgNjUuMSw0Mi41IEwgNjUuMSw0Mi42IEwgNjUuMiw0Mi43IEwgNjUuMyw0Mi44IEwgNjUuMyw0Mi44IEwgNjUuNCw0Mi45IEwgNjUuNSw0My4wIEwgNjUuNiw0My4wIEwgNjUuNyw0My4xIEwgNjUuNyw0My4xIEwgNjUuOCw0My4xIEwgNjUuOSw0My4xIEwgNjYuMCw0My4yIEwgNjYuMSw0My4yIEwgNjYuMiw0My4yIEwgNjYuMyw0My4xIEwgNjYuNCw0My4xIEwgNjYuNSw0My4xIEwgNjYuNiw0My4wIEwgNjYuNyw0My4wIEwgNjYuOCw0Mi45IEwgNjYuOSw0Mi45IEwgNjYuOSw0Mi44IEwgNjcuMCw0Mi43IEwgNjcuMSw0Mi43IEwgNjcuMSw0Mi42IEwgNjcuMiw0Mi41IEwgNjcuMiw0Mi40IEwgNjcuMiw0Mi4zIEwgNjcuMyw0Mi4yIEwgNjcuMyw0Mi4xIEwgNjcuMyw0Mi4wIEwgNjYuMSw0Mi4wIFonIHN0eWxlPSdmaWxsOiMwMDAwMDA7ZmlsbC1ydWxlOmV2ZW5vZGQ7ZmlsbC1vcGFjaXR5OjE7c3Ryb2tlOiMwMDAwMDA7c3Ryb2tlLXdpZHRoOjAuMHB4O3N0cm9rZS1saW5lY2FwOmJ1dHQ7c3Ryb2tlLWxpbmVqb2luOm1pdGVyO3N0cm9rZS1vcGFjaXR5OjE7JyAvPgo8L3N2Zz4K [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052709 silver Inorganic materials 0.000 claims abstract description 22
- 239000004332 silver Substances 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000002844 melting Methods 0.000 claims abstract description 21
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 15
- 239000000956 alloy Substances 0.000 claims abstract description 15
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- 238000000034 method Methods 0.000 claims abstract description 15
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- 238000004140 cleaning Methods 0.000 claims abstract description 11
- FYYHWMGAXLPEAU-UHFFFAOYSA-N magnesium Chemical compound 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[Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 11
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound 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OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 238000010273 cold forging Methods 0.000 claims abstract description 6
- 230000001939 inductive effect Effects 0.000 claims abstract description 5
- 238000009659 non-destructive testing Methods 0.000 claims abstract description 5
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 238000003801 milling Methods 0.000 claims abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making alloys
- C22C1/02—Making alloys by melting
- C22C1/03—Making alloys by melting using master alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
- C22C5/06—Alloys based on silver
Abstract
本发明提供一种银镁镍合金摩擦环的制备方法,包括以下步骤:清洗真空中频感应炉炉壁和原材料,将原材料进行破碎、脱气处理,在真空度为5~10Pa的条件下熔炼得到银镍中间合金,再用银片包覆镁,用银丝将其绑于坩埚上端,熔炼得到银镁镍合金铸锭,用稀硫酸溶液去铸锭表面氧化膜,将成分和内部、表面都合格的铸锭进行加工,板材轧制开坯后用液压机压平,棒材则冷锻或热锻多次,达到其硬度要求,采用线切割和铣床分别将板材和棒材加工成毛胚环,车床加工到成品尺寸,采用超声波和X射线无损检测进行产品内部质量检测。通过该方法得到的银镁镍合金摩擦环产品表面光洁平整,无裂纹、起皮、及腐蚀变色等缺陷。
Description
技术领域
[0001] 本发明涉及一种银镁镍合金摩擦环的制备方法,特别提供了一种制备高质量、高 性能、高标准银镁镍摩擦环的方法。
背景技术
[0002] 银镁镍合金具有"内氧化"特性,内氧化后具有良好的弹性、导电性、导热性、耐腐 蚀性、密封性,其硬度稳定且不可逆(即内氧化后其硬度不随温升而变化)等优点被优选为 航天运载火箭氢氧泵密封耐磨材料。
[0003] 目前,国内该材料只有丝、片材制品,对于环状制品还仅处于初步试制阶段,问题 主要在于环状制品尺寸较大,在加工过程中较难保证合金环各处化学成分的均匀性,且容 易出现夹杂、缩孔、疏松、裂纹、冷隔和分层等缺陷,熔炼后合金铸锭及加工后合金的内部缺 陷较难控制,较难达到高品质、高标准的要求,同时批量稳定性较差,尤其力学性能偏差较 大。
发明内容
[0004] 本发明的目的在于提供一种银镁镍合金摩擦环的制备方法,针对大尺寸加工件银 镁镍摩擦环制品各处的成分控制问题以及在加工过程中存在的缺陷,通过优化熔炼技术, 提高铸锭质量,尽量避免夹杂、缩孔、疏松、裂纹、冷隔和分层等缺陷的密集出现,从而保证 产品质量和技术要求,满足使用需求。
[0005] 为实现上述目的,本发明采用以下技术方案:
[0006] 一种银镁镍合金摩擦环的制备方法,该方法包括以下步骤:
[0007] 1)清洁真空中频感应炉炉壁,确保炉内无其它金属或污染物;
[0008] 2)以银、镁、镍为原材料,将银、镍破碎后放在稀硫酸中浸泡0.5h,而后用铜丝刷 刷去表面污物,清水冲净,用丙酮或酒精脱水后,风干备用;
[0009] 3)将原材料银、镍分别放入真空中频感应炉的高纯石墨坩埚中,进行真空熔炼、除 气处理;
[0010] 4)将除气处理后的银和镍放入高纯石墨坩埚中,熔炼得到银镍中间合金,真空度 为5~IOPa ;
[0011] 5)将银镍中间合金放入高纯石墨坩埚中,用银片包裹镁,并用直径为3. 0~3. 5_ 的银丝将其绑于坩埚上端,熔炼得到银镁镍合金的板材铸锭或棒材铸锭,熔炼时的真空度 为5~10Pa,控制银镁镍合金中合金成分的质量百分含量为:镁0. 18~0. 26%;镍0. 25~ 0. 31% ;余量为银;
[0012] 6)铸锭出炉后,用15wt%的稀硫酸水溶液洗去表面的氧化膜,用铜丝刷清洗反应 物,用水冲洗,晾干备用;
[0013] 7)将铸锭取样做化学成分分析,并将化学成分的质量百分含量符合:Mg 0. 18~ 0· 26 % ;Ni 0· 25 ~0· 31 % ;Pb 彡 0· 005 % ;Sb 彡 0· 003 % ;Fe 彡 0· 01 % ;Cu 彡 0· 01 % ; Bi < 0.005 %,所含杂质的总含量不大于0.1 %的铸锭进行超声波无损检测,选取合格铸 锭,进行下一步加工;
[0014] 8)将板材铸锭进行轧制,道次变形量在10%左右,总变形量30% ;然后将板材用 四柱液压机压平;棒材铸锭则采用冷锻或热锻的方法进行压力加工,得到的棒材总变形控 制在60%~70%,道次变形量控制在5%~10%,锻造过程中保证坯料圆柱表面圆整而光 滑;
[0015] 9)将轧制好的板材或者锻造好的棒材进行超声波无损检测,选择符合条件的板材 或棒材,然后将板材或棒材分别通过线切割和铣床加工成毛胚环,最后都通过车床加工至 成品尺寸;
[0016] 10)对成品进行超声波和X射线无损检测,选择合格成品。
[0017] 所述步骤8)中,棒材铸锭采取冷锻时,高度总变形小于70% ;采用热锻时,锻造需 墩粗-压长-墩粗-压长,反复1-2次。
[0018] 由于镁的沸点为1060°c,而镍的熔点为1455°C,因此本发明在制备银镁镍合金铸 锭过程中,先熔炼得到银镍中间合金,从而能降低银镁镍合金的熔炼温度,为了防止镁挥发 而无法加入中间合金中,从而影响合金成分,将镁用银片包裹。另外须严格控制合金中杂质 的含量,以有效地保证银镁镍合金铸锭的成分均匀、无明显夹杂、气孔等缺陷,从而保证产 品进一步加工前的产品质量。本发明原材料中的杂质的重量百分含量须控制在以下范围 内:Pb 彡 0· 005% ;Sb 彡 0· 003% ;Fe 彡 0· 01 % ;Cu 彡 0· 01 % ;Bi 彡 0· 005%,所含杂质的 总含量不大于〇. 1%。
[0019] 在所述步骤4)和步骤5)中,装料时避免产生架桥现象。
[0020] 所述步骤8)中得到的板材或棒材的显微维氏硬度值为55~IOOHv即达到硬度要 求。
[0021] 本发明的优点在于:
[0022] 本发明选择合理的银镁镍合金铸锭的熔炼方法,有效地保证了银镁镍合金铸锭的 成分均匀、无明显夹杂、气孔等缺陷,从而保证产品进一步加工前的产品质量;并通过选取 合适的加工工艺有效控制轧制或者锻造过程中所造成的缺陷,最终银镁镍合金摩擦环产品 表面光洁平整,无裂纹、起皮、及腐蚀变色等缺陷,并通过超声波检测技术及X射线检测技 术检测成品内部不存在缩孔、疏松、裂纹、冷隔和分层等缺陷,同时保证其显微维氏硬度值 不小于55Hv,不大于ΙΟΟΗν。
具体实施方式
[0023] 以下通过具体实施例对本发明做进一步说明。
[0024] 实施例1
[0025] 制备AgMgO. 24NiO. 29银镁镍合金摩擦环,其中各合金成分的重量百分含量为:Mg 0. 24% ;Ni 0. 29%,余量为Ag,具体步骤如下:
[0026] 1)清洁真空中频感应炉熔炼炉壁,确保炉内无其它金属或污染物。
[0027] 2)将银、镍破碎后放在稀硫酸中浸泡0. 5h,而后用铜丝刷刷去表面污物,清水冲 净,用丙酮或酒精脱水后,风干。
[0028] 3)将银、镍放入真空中频感应炉的高纯石墨坩埚中进行熔炼、除气。
[0029] 4)将脱气后的银、镍放入高纯石墨坩埚中,在真空度为5~IOPa的条件下熔炼得 到银镍中间合金。
[0030] 5)将银镍中间合金放入高纯石墨坩埚中,用银片包镁,并用直径为3. 0~3. 5_的 银丝将其绑于坩埚上端,在真空度为5~IOPa的条件下熔炼得到银镁镍合金棒材。
[0031] 6)棒材铸锭出炉后,用15%的稀硫酸水洗去表面氧化膜,铜丝刷清洗反应物,用 水冲洗,晾干备用。
[0032] 7)取样做化学成分分析,分析结果如表1所示。
[0033] 表 1
[0034]
[0035] 8)进行超声波无损检测,铸锭成分均匀、内部无明显夹杂、气孔等缺陷,可进行下 一步加工。
[0036] 9)采取冷锻,从高280mm墩粗至85mm,硬度为76Hv。
[0037] 10)进行超声波无损检测,内部不存在缩孔、疏松、裂纹、冷隔和分层等缺陷,可加 工成品。
[0038] 11)通过铣床加工成毛胚环,通过车床加工至成品尺寸,表面光洁平整,无裂纹、起 皮、及腐蚀变色等缺陷。
[0039] 12)对成品进行超声波和X射线无损检测,内部不存在缩孔、疏松、裂纹、冷隔和分 层等缺陷,产品满足使用需求。
[0040] 实施例2
[0041] 制备AgMgO. 24NiO. 29银镁镍合金摩擦环,其中各合金成分的重量百分含量为:Mg 0. 26% ;Ni 0. 30%,余量为Ag,具体步骤如下:
[0042] 1)清洁真空中频感应炉熔炼炉壁,确保炉内无其它金属或污染物。
[0043] 2)将银、镍破碎后放在去油剂中浸泡0. 5h,而后用铜丝刷刷去表面污物,清水冲 净,风干。
[0044] 3)将银、镍放入真空中频感应炉的不同石墨坩埚中进行熔炼、除气。
[0045] 4)将脱气后的银、镍放入高纯石墨坩埚中,在真空度为5~IOPa的条件下熔炼得 到银镍中间合金。
[0046] 5)将银镍中间合金放入高纯石墨坩埚中,用银片包镁,并用直径为3. 0~3. 5_的 银丝将其绑于坩埚上端,在真空度为5~IOPa的条件下熔炼得到银镁镍合金板材。
[0047] 6)板材铸锭出炉后,用15%的稀硫酸水洗去表面氧化膜,铜丝刷清洗反应物,用 水冲洗,晾干备用。
[0048] 7)取样做化学成分分析,分析结果如表2所示。
[0049] 表 2
[0050]
[0051] 8)进行超声波无损检测,铸锭成分均匀、内部无明显夹杂、气孔等缺陷,可进行下 一步加工。
[0052] 9)将板材铸锭进行开坯,保证开坯后板材尺寸为240 X 260 X 29mm。
[0053] 10)将轧制后的板材用四柱液压机压平,硬度为83Hv。
[0054] 11)进行超声波无损检测,内部不存在缩孔、疏松、裂纹、冷隔和分层等缺陷,可加 工成品。
[0055] 12)线切割加工成毛胚环,通过车床加工至成品尺寸,表面光洁平整,无裂纹、起 皮、及腐蚀变色等缺陷。
[0056] 13)对成品进行超声波和X射线无损检测,内部不存在缩孔、疏松、裂纹、冷隔和分 层等缺陷,产品满足使用需求。
Claims (4)
1. 一种银镁镍合金摩擦环的制备方法,其特征在于,该方法包括以下步骤: 1) 清洁真空中频感应炉炉壁,确保炉内无其它金属或污染物; 2) 以银、镁、镍为原材料,将银、镍破碎后放在稀硫酸中浸泡0. 5h,而后用铜丝刷刷去 表面污物,清水冲净,用丙酮或酒精脱水后,风干备用; 3) 将原材料银、镍分别放入真空中频感应炉的高纯石墨坩埚中,进行真空熔炼、除气处 理; 4) 将除气处理后的银和镍放入高纯石墨坩埚中,熔炼得到银镍中间合金,真空度为 5 ~IOPa ; 5) 将银镍中间合金放入高纯石墨坩埚中,用银片包裹镁,并用直径为3. 0~3. 5_的 银丝将其绑于坩埚上端,熔炼得到银镁镍合金的板材铸锭或棒材铸锭,熔炼时的真空度为 5~10Pa,控制银镁镍合金中合金成分的质量百分含量为:镁0. 18~0. 26% ;镍0. 25~ 0. 31% ;余量为银; 6) 铸锭出炉后,用15wt%的稀硫酸水溶液洗去表面的氧化膜,用铜丝刷清洗反应物, 用水冲洗,晾干备用; 7) 将铸锭取样做化学成分分析,并将化学成分的质量百分含量符合:Mg 0.18~ 0• 26 % ;Ni 0• 25 ~0• 31 % ;Pb 彡 0• 005 % ;Sb 彡 0• 003 % ;Fe 彡 0• 01 % ;Cu 彡 0• 01 % ; Bi < 0.005 %,所含杂质的总含量不大于0. 1 %的铸锭进行超声波无损检测,选取合格铸 锭,进行下一步加工; 8) 将板材铸锭进行轧制,道次变形量在10%左右,总变形量30% ;然后将板材用四柱 液压机压平;棒材铸锭则采用冷锻或热锻的方法进行压力加工,得到的棒材总变形控制在 60%~70%,道次变形量控制在5%~10%,锻造过程中保证坯料圆柱表面圆整而光滑; 9) 将轧制好的板材或者锻造好的棒材进行超声波无损检测,选择符合条件的板材或棒 材,然后将板材或棒材分别通过线切割和铣床加工成毛胚环,最后都通过车床加工至成品 尺寸; 10) 对成品进行超声波和X射线无损检测,选择合格成品。
2. 根据权利要求1所述的银镁镍合金摩擦环的制备方法,其特征在于,所述步骤8) 中,棒材铸锭采取冷锻时,高度总变形小于70% ;采用热锻时,锻造需反复1-2次墩粗-压 长-墩粗-压长工序。
3. 根据权利要求1或2所述的银镁镍合金摩擦环的制备方法,其特征在于,在所述步骤 4)和步骤5)中,装料时避免产生架桥现象。
4. 根据权利要求1或2所述的银镁镍合金摩擦环的制备方法,其特征在于,所述步骤 8)中得到的板材或棒材的显微维氏硬度值为55~lOOHv。
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