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.index-module_wrapperBg__OKK1h{background-image:url(https://baikebcs.bdimg.com/baike-common/sdks/drawer_bg_new.png);background-position:top;background-repeat:no-repeat;background-size:cover;height:871px;left:0;position:absolute;top:0;width:100%}.index-module_drawerHand__aRhcO{align-items:center;background-image:url(https://baikebcs.bdimg.com/baike-common/sdks/drawer_hand_bg.png);background-position:50%;background-repeat:no-repeat;background-size:contain;cursor:pointer;display:flex;height:72px;justify-content:center;position:fixed;right:0;top:50%;transform:translateY(-36px);transition:all .2s ease-in;width:20px}.index-module_drawerHand__aRhcO .index-module_taskLogo__71Tj5{height:66px;position:absolute;right:30px;top:0;width:66px}.index-module_drawerHand__aRhcO.index-module_open__qMl5O{right:480px}.index-module_reverse__OKr6k{transform:rotate(180deg)}網(wǎng)頁新聞貼吧知道網(wǎng)盤圖片視頻地圖文庫資訊采購百科百度首頁登錄注冊進入詞條全站搜索幫助首頁秒懂百科特色百科知識專題加入百科百科團隊權(quán)威合作個人中心收藏查看我的收藏0有用+104J52播報討論上傳視頻工業(yè)產(chǎn)品鐵鎳定膨脹合金是通過調(diào)整鎳含量而獲得在給定溫度范圍內(nèi)能與膨脹系數(shù)不同的軟玻璃和陶瓷匹配的一系列定膨脹合金，其膨脹系數(shù)和居里點隨鎳含量增加而增加。 [1]中文名4J52類 別材料牌號品 種棒材、管材、板材等目錄1產(chǎn)品介紹2處理制度3性能4組織結(jié)構(gòu)5工藝性能6處理工藝產(chǎn)品介紹播報編輯該組合金是電真空工業(yè)中廣泛使用的封接結(jié)構(gòu)材料。 [1]4J52材料牌號 [1]4J52。 [1]4J52相近牌號 [1]俄羅斯 美國 英國 日本 法國 德國 [1]52H Glass Sealing52 - N52 N52 Vacodil 520 [1]52H-BИ Niloy52 FeNi52 [1]4J52材料的技術(shù)標準 [1]YB/T 5235-1993《鐵鎳鉻、鐵鎳封接合金技術(shù)條件》。 [1]4J52化學成分 [1]C Mn Si P S Al Co Ni Fe [1]0.05 0.80 0.30 0.020 0.020 - - 51.5～52.5 余量 [1]在平均線膨脹系數(shù)達到標準規(guī)定條件下，允許鎳含量偏離表1-2規(guī)定的范圍。 [1]處理制度播報編輯標準規(guī)定的膨脹系數(shù)性能檢驗試樣其熱處理制度：在保護氣氛或真空中加熱到850℃±20℃，保溫1h，以不大于300℃/min速度冷至400℃以下出爐。 [1]4J52品種規(guī)格與供應(yīng)狀態(tài) [1]品種有棒材、管材、板材、帶材和絲材。 [1]4J52熔煉與鑄造工藝 [1]用非真空感應(yīng)爐、真空感應(yīng)爐或電弧爐熔煉。 [1]4J52應(yīng)用概況與特殊要求 [1]4J52屬玻封合金典型牌號，經(jīng)航空工廠長期使用，性能穩(wěn)定。 [1]4J52合金主要用于與軟鉛玻璃封接，小型電子管引線。 [1]在應(yīng)用中應(yīng)使選用的封接材料與合金的膨脹系數(shù)相配。熱處理時應(yīng)控制其晶粒度，以保證材料具有良好的深沖引伸性能。當使用鍛、軋材時應(yīng)嚴格檢驗材料的氣密性。 [1]性能播報編輯4J52溶化溫度范圍 [1]該合金溶化溫度約為1430℃[1,2]。4J52熱導(dǎo)率 λ=16.7W/(m·℃)[1,2]。 [1]4J52比熱容 該合金的比熱容為502J/(kg?℃)。 [1]4J52線膨脹系數(shù) 標準規(guī)定的合金平均線膨脹系數(shù)見表2-1。合金的平均線膨脹系數(shù)見表2-2。 [1]表2-1 [1]/10-6℃-1 [1]20～300℃ 20～400℃ 20～450℃ [1]9.8～11.0 9.8～11.0 - [1]4J52密度 ρ=8.25g/cm3[1,2]。 [1]4J52電性能 電阻率ρ=0.43μΩ·m[1,2]。 [1]表2-2[1,2] [1]/10-6℃-1 [1]20～100℃ 20～200℃ 20～300℃ 20～350℃ 20～400℃ 20～450℃ 20～500℃ 20～600℃ [1]10.3 10.4 10.2 10.3 10.3 10.3 10.3 10.8 [1]4J52居里點 Tc=520℃[1,2]。 [1]4J52化學性能 合金在大氣、淡水和海水中有較好的耐腐蝕性。 [1]4J52硬度 該合金（退火態(tài)）硬度HV約為135[1,2]。 [1]4J52彈性模量 該合金的彈性模量E=158GPa[1,2]。 [1]組織結(jié)構(gòu)播報編輯4J52合金組織結(jié)構(gòu) [1]該組合金均為穩(wěn)定的奧氏體組織。 [1]4J52晶粒度 [1]合金深沖帶的晶粒度應(yīng)不小于7級，小于7級的晶粒度不得超過面積的10%。厚度小于0.13mm的帶材估計平均晶粒度時，沿帶材厚度方向的晶粒個數(shù)應(yīng)不少于8個。 [1]工藝性能播報編輯4J52成形性能 [1]該合金很容易進行冷、熱加工。熱加工溫度不宜過高，加熱時間不宜過長，應(yīng)避免在含硫的氣氛中加熱。當帶材冷應(yīng)變率大于75%時，退火后會引起塑性各向異性。冷應(yīng)變率在10%～15%，加熱到950～1050℃時（在釬焊過程中不可避免）晶粒顯著長大，致使合金塑性降低，對于薄的截面還可能喪失金屬的真空氣密性。因此成品的最終應(yīng)變率應(yīng)控制在60%左右[2,5]。4J52焊接性能該組合金具有良好的焊接性能，可釬焊和點焊。該組合金與軟玻璃等材料封接前應(yīng)進行預(yù)氧化處理。 [1]處理工藝播報編輯熱處理可分為：消除應(yīng)力退火、中間退火及預(yù)氧化處理。(1)消除應(yīng)力退火 為消除零件在機械加工后的殘存應(yīng)力要進行消除應(yīng)力退火：430～540℃，保溫1～2h,爐冷或空冷。 [1](2)中間退火 為消除合金在冷軋、冷拔、冷沖壓過程中引起的加工硬化現(xiàn)象，以利于繼續(xù)加工。工件需在真空或保護氣氛中，加熱到700～800℃，保溫30～60min，然后爐冷、空冷或水淬。(3)預(yù)氧化處理 該組合金作封接材料使用時，在封接前應(yīng)進行預(yù)氧化處理。使合金表面生成一層厚度均勻、致密的氧化膜。零件在1100℃下，在飽和濕氫中，加熱30min，然后在大約800℃的空氣中氧化5～10min。零件的增重在0.1～0.3mg/cm2為適宜[6]。該合金不能用熱處理硬化。4J52表面處理工藝在熱處理、焊接或玻封之前，必須清除金屬表面污物、油脂。氧化層嚴重時可采用噴砂或先在熔融堿液中浸泡，然后再酸洗。輕微氧化皮可用25%鹽酸溶液在70℃下酸洗。4J52切削加工與磨削性能該合金切削加工特性和奧氏體不銹鋼相似。加工時采用高速鋼或硬質(zhì)合金刀具，低速切削加工，切削時可使用冷卻劑。磨削性能良好。 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4J52概述鐵鎳定膨脹合金是通過調(diào)整鎳含量而獲得在給定溫度范圍內(nèi)能與膨脹系數(shù)不同的軟玻璃和陶瓷匹配的一系列定膨脹合金，其膨脹系數(shù)和居里點隨鎳含量增加而增加。該組合金是電真空工業(yè)中廣泛使用的封接結(jié)構(gòu)材料。4J52熱處理制度標準規(guī)定的膨脹系數(shù)性能檢驗試樣其熱處理制度：在保護氣氛或真空中加熱到850℃±20℃，保溫1h，以不大于300℃/min速度冷至400℃以下出爐。4J52熔煉與鑄造工藝 用非真空感應(yīng)爐、真空感應(yīng)爐或電弧爐熔煉。4J52應(yīng)用概況與特殊要求 4J52屬玻封合金典型牌號，經(jīng)航空工廠長期使用，性能穩(wěn)定。4J52合金主要用于與軟鉛玻璃封接，小型電子管引線。在應(yīng)用中應(yīng)使選用的封接材料與合金的膨脹系數(shù)相配。熱處理時應(yīng)控制其晶粒度，以保證材料具有良好的深沖引伸性能。當使用鍛、軋材時應(yīng)嚴格檢驗材料的氣密性。 PRODUCT PARAMETERS 產(chǎn)品參數(shù) 化學成分CPSMnSiAlCoNiFe51.54J520.050.0200.0200.600.30------- 52.5余量4J52絲材的抗拉強度：狀態(tài)代號狀態(tài)抗拉強度，N/mm2R軟態(tài)<590I硬態(tài)>8204J52帶材的抗拉強度：狀態(tài)代號狀態(tài)抗拉強度，N/mm2R軟態(tài)<570I硬態(tài)>7004J52合金的平均線膨脹系數(shù)：合***號試樣熱處理制度平均線膨脹系數(shù)a,10-6/ oC在氫氣氣氛中加熱至850±20 oC,保溫lh,以不大于5 oC/ min速度冷至200 oC以下出爐20～ 300 oC20～ 400 oC20～ 450 oC4J52 9.8～ 11.0 9.81～ 11.0 ------- 上一頁：N14052
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