即在相同熱處理?xiàng)l件下（淬火溫度及介質(zhì)、冷卻速率、工件尺寸等），過細(xì)的盤條晶粒使由奧氏體轉(zhuǎn)變?yōu)轳R氏體的百分?jǐn)?shù)少，導(dǎo)致淬透性下降，影響自攻釘硬度和強(qiáng)度性能。SWRCH22A為含鋁碳素鋼，要求鋼中A1≥.2%，一般將A1控制在.4～.6%。由于冶煉工藝的差異，鋼中氮含量波動(dòng)范圍在4～8ppm。鋼中較高的鋁、氮含量導(dǎo)致了A1N數(shù)量增加。透射電鏡分析在晶界上觀察有A1N粒子的彌散析出。A1N粒子一般呈細(xì)小彌散析出，AIN粒子越多，越細(xì)小，則對阻止晶界遷移越有利，根據(jù)第二相粒子釘扎晶界理論，可以獲得小的奧氏體晶粒。
芯科技，芯創(chuàng)新；電極棒，ZTZ400，74329494
0190899102 HOSE TERMOPLASTIC.
0191015102 CONTACTOR
0191052110 VOLTMETER
0191059116 Ampere meter
0191085203 CAPACITOR
0191085206 CAPACITOR
0191321104 CLAMP PLAST. D=12 STAUFF
0191418074 SPACING SLEEVE
0191496114 WEDGE
0191561114 INSULATING WASHER
0191574114 INSULATED SLEEVE
0191812101 Cable MKFR
0191812102 Cable MKFR
0191812104 Cable MKFR以質(zhì)量打造品質(zhì)，用誠信共贏未來！》
0191812105 Cable MKFR
0191954101 RUBBER HOSE
0192058101 THERMAL COMPOUND
0192108201 SOLENOID VALVE
0192190051 PRESSURE COIL
0192200103 Hose Nipple
0192207111 Y-steel bearing UCP 214
0192230107 Blind Plug
BALLUFF BTL-5-R1-M0610-Z-MA000--S135-E4 (Surplus New not in factory packaging)
BALLUFF BIS-F-450-000-A (Used, Cleaned, Tested 2 year warranty)
BALLUFF BTL2-A11-0100-P-S-32 (Surplus New not in factory packaging)
BALLUFF BMOA66RM-X63-1 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BMOA66RM-X63-1 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BIS-C-310-05 (Surplus New not in factory packaging)
BALLUFF C49BPE00PY050M CONNECTOR *NEW IN ORIGINAL PACKAGE*
BALLUFF C49BPE00PY050M CONNECTOR *NEW IN ORIGINAL PACKAGE*
BALLUFF BNI-PNT-104-105-Z015 (Surplus New In factory packaging)
BALLUFF BNS-519-D04-L12-062-10 LIMIT SWITCH BNS519D04L1206210
BALLUFF BTL5-A11-M0305-B-SU147-S32 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BES-Q08ZE-POC20B-BV06 (Surplus New In factory packaging)
BALLUFF BNS-519-101-1-WS-067 (Used, Cleaned, Tested 2 year warranty)
FREE 2 YR WARRANTY FREE US SHIPPING ON ORDERS OVER $25
BALLUFF BNS-519-101-1-WS-067 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BNS-519-101-1-WS-088 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BNS-519-101-1-WS-066 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BNS-519-101-1-WS-066 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BLE-S5-1-FS-15 (Surplus New In factory packaging)
Balluff BES-516-325-BO-C Proximity Switch BES-516-325-B0-C - New No Box
Balluff BES-516-325-BO-C Proximity Switch BES-516-325-B0-C - New No Box
BALLUFF BES-516-207-BO-E-03 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BES-516-207-BO-E-03 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BTL5-A11-M0254-Z-S32 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BNS-519-FR-60-101 (Surplus New not in factory packaging)
BALLUFF BNS-519-FR-60-101 (Surplus New not in factory packaging)
BALLUFF BES-516-359-BO-C-03 (Surplus New not in factory packaging)
燃?xì)鈮毫﹂_關(guān)，DG40VC1-5WG/B，75454579
燃?xì)鈮毫﹂_關(guān)，DG17VC1-6W/B，75455241
燃?xì)鈮毫﹂_關(guān)，DG40VC1-6W/B，75455243
燃?xì)鈮毫﹂_關(guān)，DG110VC1-6W/B，75455245
燃?xì)鈮毫﹂_關(guān)，DG300VC1-6W/B，75455246
燃?xì)鈮毫﹂_關(guān)，DG17VC1-6WG/B，75455247
燃?xì)鈮毫﹂_關(guān)，DG40VC1-6WG/B，75455249
燃?xì)鈮毫﹂_關(guān)，DG110VC1-6WG/B，75455251
燃?xì)鈮毫﹂_關(guān)，DG300VC1-6WG/B，75455252
燃?xì)鈮毫﹂_關(guān)，DG40VC9-6W/B，75456344
燃?xì)鈮毫﹂_關(guān)，DG17VC9-6W/B，75456403
燃?xì)鈮毫﹂_關(guān)，DG60VC9-6W/B，75456404
燃?xì)鈮毫﹂_關(guān)，DG150VC9-6W/B，75456405
燃?xì)鈮毫﹂_關(guān)，DG300VC9-6W/B，75456406
燃?xì)鈮毫﹂_關(guān)，DG40VC9-6WG/B，75457583
燃?xì)鈮毫﹂_關(guān)，DG500VC1-6W/B，75457730
燃?xì)鈮毫﹂_關(guān)，DG500VC1-6WG/B，75458957
燃?xì)鈮毫﹂_關(guān)，DG17VC8D-6S32，84448004
兩種系統(tǒng)各有自己的特點(diǎn)。水-水水源熱泵系統(tǒng)是一種更為集中的空調(diào)方式，國內(nèi)已有生產(chǎn)，由于機(jī)組較為集中因此水源熱泵機(jī)組初投資較小，但熱泵機(jī)組需要在建筑中設(shè)置專用的機(jī)房；水-空氣水源熱泵系統(tǒng)相對分散，目前成熟產(chǎn)品主要為國外品牌，機(jī)組初投資略高，但其室內(nèi)的循環(huán)水管不需要保溫，由于機(jī)組分散到末端，所需機(jī)房面積也較小。就系統(tǒng)的綜合造價(jià)而言，水-空氣水源熱泵機(jī)組較貴，但水-水水源熱泵系統(tǒng)所需的風(fēng)機(jī)盤管和空調(diào)箱、保溫費(fèi)用、多占機(jī)房帶來的費(fèi)用增加，綜合投資雖然水-空氣水源熱泵機(jī)組形式較貴，但二者相差不大。
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