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镀锌层中铜、铁、砷等杂质含量较高时,经钝化处理后,这些杂质呈现黑色。原板表面污蚀物处理不充分,形成残渣,使某些部位镀不上锌,导致镀锌层出现毛病而容易脱落,从而造成黑斑。镀锌时出现漏镀,在后处理时容易形成黑斑。镀锌液中夹杂残渣或小黑灰(碳或碳化合物),粘附于锌层表面或居于锌层内,与锌层结合得很牢固。在成品镀锌板上可见到黑斑。磨蚀黑斑。由运输、堆放过程中粗野作业所致。白锈镀锌钢板表面受潮或雨水浸入,在一定温度下,锌被氧化,产生白色粉末。
MC MagnaValve REXROTH HLR01.1N-0300-N17R5-A-007-NNNN Eletta Flow AB S2-GL 15 8-16l/min
Gefran F021872 TC1M-A-1-J-2-C-D 050X000X00100XX
HPI M1CBN3040HL40C04N
EGE SC 440-A4-A4-GSP 24VDC
EAO 704.609.900869
HPI M3DBN2018HL30D01N
Hirschman 95219013 Tygon? F-4040-A, ID 3,2 mm
71005850 HDP30.61-32S1/30.34 D1
Gefran F035383 TK-N-1-E-B03D-M-V 2130X000A00
B&PLUS RXE-1202P-PU-02
EA800-15740
SCHNEIDER A9N19457
NODING P120-401-F3K1
68300033 PLP30.51/30.43 D
EUROFORK MS1748
69239007 PLP30.27-04S5-LGF/GF/20.20-LGE/GD/20.8-LGD/GD D/FS-L
AUF1000tetratec控制器
Gefran F029009 GFX-M2-5/440-M-R-RR-P-CV
HYDROKOMP快速接头HYDROKOMP联轴器
MD MICRODETECTORS传感器MDI63D 138
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SCHNEIDER NSYVDA42U68EN
TEHDASVALO H125/E27 QE125W GE-lamp
BURKERT 347516
Gefran F000067 1955-2-2
J. Schmalz GmbH FSTE G1/4-AG 25 VG 10.01.02.00570
CAMOZZI 10-1350-040305 24S2A20A040S05
EAO 56-1913.2699JAP10
MINK毛刷
TECNA 9337
RIEGLER MSN252MU34
SELET传感器B01AN30NCV6
G&D DVIMUX2 -DL -MC2 -USB -RM
IBP V128 T1 Z15
RIEGLER 760 S
019987JR FRONT SECTION PLP20.25D0-04S5-L**/OD-S7-N-L-A FS-AV
INELTA IMA2-LVDT3A
03576301 MOTOR KM30.61B0-32S3-LOF/OF-N
Camille Bauer KINAX 3W2 708-114D 1/D
ROTOFLUX旋转接头原装F10-1301-01R
EAO 84-5020.0040
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Tombretta 684-1291-212-09
BURKERT电磁阀304531
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Gefran F040671 TR6-C-4-A-F-A-I-D-2 000X100X00200XA
SCHUNK MMS22-S-M8-PNP??0301032
Gefran F046323 IK4-A-B-0800-E-1 0000XXXXS00M0XX
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SELET传感器OCV81/D2APSC
automationdirect PSP24-REM240S Thumbnail
LEE IEPA1221141H
Gefran F029123 TR6-B-2-B-C-A-I-D-2 000X000X00350XX
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VAHLE 碳刷 SK-KSW-MSWA-PH/SU-28 NO.600088
SCHNEIDER XACD24A0105
ENDA OPTIONAL: ETC4420-SM
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automationdirect WG-262-010-H Thumbnail
Gefran F075113 ME1-8-M-B01M-1-3-D-P 2130X000X00
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英国ONDRIVES变速箱和减速器E40-8-12-LH
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RIEGLER FU 625-16
automationdirect AVPS4-4D Thumbnail
LIKA编码器SMRI2-Y-2-128-N-L1-CJ SENSORE SMRI2
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RIEGLER 855.014-10
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TELWIN 802563 CABLE LUGS 50MMQ - 2PCS BL
Celsa LM72- 4.1/24V
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FEAS Artikel-Nr.:58024
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VEGA PS64.ACGHGQHXANAXX
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03772677 DIVIDER HDD30.61-GF+C3030-GF+61-GF+61-GF+61-GG/GF+61-GF-N
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THERMOTEC TYP 01-15/30 ST
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ILME 27384 ILAPV 21
RIEGLER WS 2002
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EAO 51-156.0266
SELET传感器B88G3015NSC
GEWISS GW-70-436
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02001241 MOTOR PLM20.16S0-54B2-LBC/BE-N-EL
AA-0400原装意大利univer电磁阀
RIEGLER GE3810LST
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RIEGLER 127.005-4
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KUBLER 8.A02H.0031.1024.T011
6.541.011.300KUBLER数显表现
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瑞士AGATHON导套
automationdirect AVS-5242 Thumbnail
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中发工业SELET B02EG124PSC原装进口

输出出现正、负脉冲,可能是二极管D2D28被击穿或虚焊。经过上述检查和维修,在控制回路无故障情况下伺服放大器应能正常工作。否则有以下两种情况:无输入信号时,有输出电压(电压接近22VAC)则可能是:可控硅SCRSCR2损坏。电容C3C32被击穿。有输入信号时,无输出信号或输出电压偏低,则可能是:二极管D31~D38中有被击穿的。可控硅SCRSCR2损坏。
VIVOIL X2R4507FRRF
stocko MFM 7238-5P
automationdirect 7000-41201-0000000 Thumbnail
G7L-2A-BOMRON继电器
fischbein company HAS200 HAS1005001000000 No.01-06-002
SCHNEIDER LC1K06015B7
CAMOZZI 20-3905-02J101 YP1E-2M-A
Gefran F010172 TCM-CP-2-J-0-T-1-T-E 001X000X00000XA
MD MICRODETECTORS传感器MDI38F 1031
WALTHER 1-LP-006-2-WR013-11-2
automationdirect ZP-JBH85-00-FW Thumbnail
MD MICRODETECTORS传感器CD12M/0E-100A1
MD MICRODETECTORS传感器MDI38G 745
MD MICRODETECTORS传感器MDI58F 957
小强工控 CARLO GAVAZZI RCP800248VAC
RIEGLER 437.2
Gefran F058510 TK-E-3-E-B06U-M-V 2130X000A00
FESTO EGSL-BS-35-50-8P
RIEGLER ES 225.33
FERRAZ FD20GB100V40T
EAO 56-0913.M.3129
RIEGLER 243.69
RIEGLER 532
CAMOZZI 10-1400-050104 24S1A25A050S03
STEUTE ES 98-11U *
MD MICRODETECTORS传感器MDI58C 2450
RIEGLER 6302.97104
CAMOZZI 10-702V-1602 97A2A063A0160
MD MICRODETECTORS传感器MDI58F 1351
SCHNEIDER ATV71HU22M3
CAMOZZI 10-3286-0759 31R3A080A075
RIEGLER 243.48-N
CAMOZZI 20-4458-620010 458-015-22S19
KP40.133-06S8-LSF/SE-CSL/30.43-LSD/SC-CSC/20.8-LOD/OC D1
CAMOZZI 10-1400-025107 24S1A25A025S07
TECNA检测仪1662
SELET传感器OCV81/D2NSCC5
LIKA BR2-15 BOCCOLA RIDUZIONE
03590556 PLP30.43D0-04**-LOG/OF-N-FS SCP
MD MICRODETECTORS传感器MDI38F 1445
TELWIN 362057 POCKET
BURKERT电磁阀346671
ZB32-16EATON接触器
BURKERT电磁阀310655
CAMOZZI 20-3720-0010022 HP2M-10-10S-C3B6M-M
02004963 PLP20.20S0-03S1-LSB/SA-N-EL
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06541072 LVP 75D-34S7-LMF/QD-N-RN-E-AS1/03 VGO-02 (197/1450)
MD MICRODETECTORS传感器MDI63D 1602
SCHNEIDER K2H005PL
Gefran F056339 TCM-GF-1-J-5-A-0-T-A 100X000X00015XA
Gefran F021932 TC5-N-1-J-3-Q-J-O-1 100X000X00010XX
MPM 3.AB240T.C/G.E/A.24
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Gefran F033233 MK4-A-B-0500-P 0000X001X00X0XX
MD MICRODETECTORS传感器MDI63A 906
ESAPYRONICS 8FCR-REG NR:534106 接口尺寸1 材质:铸铁 介质:天然气
TROMBETTA 974-1235-211-12 12v
ANAHEIM AUTOMATION BSP-TM-SLFx-006
SCHNEIDER KNA63AB4
Gefran F040507 TCM-CP-1-J-0-D-1-T-H 000X100X00000XX
IPF传感器AM000076
automationdirect LR-22P0-1PH
MD MICRODETECTORS传感器MDI63D 592
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MD MICRODETECTORS传感器MDI63F 1659
ILME 659137 ILPE 1624 PI
KENDRION GUE080.504010
EUROTEK 2045 ET-MP/D37SUB/F/SMD
IPF传感器IO300106
ELTEK VALERE DEUTSCHLAND GmbH 302-DCC-0MM.00
06865579 LVP 75S-06S7-PMF/QD-N-LS0-E
DEMAG BUFFER TYPE S 100B NR:8152344
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ILME 659383 ILPEN 1613 PQ
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FEAS Netzteil SNT12012-W
Gefran F304765 1650P-C-RVR-0-0-03-5-00-00-0-00
VIVOIL X2M5101EPPF
CAMOZZI 50-5083-0058 5083 3/8
小强工控 CARLO GAVAZZI PS31L-MT21LS-M00
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06003357 HAND EP-25-D-V1/T2P
EAO 61-2701.0/DX
LIKA编码器FDB-60-D DOUBLE TACHOGENERATOR 1000RPM/60V
HBM 1-T22/20NM
ILME 1626673 ILMAPS 10.32
Gefran F051525 TR1-A-2-B-5-A-J 030X000G00050XA
Gefran F018232 TR1-B-2-B-1-A-F-B-1 020X000X00250XX
CAMOZZI 10-1350-C003 24N2A20A1200
HOTSTART E02023W-158V-00
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SCHNEIDER RUMF21JD
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ROPEX 互感器 PEX-W3 885105
STRACK 246X396-F9-27-1730 164479
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进口BE-3714D电磁阀UNIVER
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AFAG支撑柱11004991
DCS CHAMPION TSW-12A-2P-8I
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RAKON模块
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中发工业SELET B02EG124PSC原装进口

三国时期的蒲元明确指出水质对淬火的影响。《太平御览》引《蒲元传》中有说蒲元“熔金造器特异常法。刀成,自言汉水钝弱,不任淬用。蜀江爽烈,乃命人于成都取之。”不同的水质对淬火的影响不可否认,但在《蒲元传》中可能是过分强调了。然而有趣的是在十五个世纪以后西方居然出现了与上述故事雷同的美国到英国取水淬火的事件。我国对淬火技术有重大贡献的另一人是南北朝的綦毋怀文。《北史?艺术列传》指出“怀文造宿铁刀,其法烧生铁精,以重柔铤,数宿则成刚。



