產品詳情
當被測表面粗糙度值大于Ra=0.8μm時,隨著粗糙度值的增大,被測表面對壓頭的抗力愈小,其塑性變形愈大,圓形壓痕就愈大,相應的硬度值也就愈小,致使測量值偏低于其真實值。試驗證明,測量偏差在10HB以上(注:用臺式硬度計測量洛氏硬度時,粗糙度的影響較小,本文就不進行分析了)。當我們用便攜式微電腦超聲硬度計測量硬度時,粗糙度的影響較用臺式硬度計就更大了。當被測表面粗糙度值大于Ra=0.8μm時,隨著粗糙度值的增大,硬度計的金剛石角錐體壓頭與被測表面的接觸面積就會增大。
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FINDER 2.02681E+11 繼電器
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NOTIFIER AL-02 RIV LIQUIDI A NASTRO
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ABB 1SDA072234R1
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EAO 200-.704-00KOMAX Rotating knob black short
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PIZZATO E2 2PU2F349L1 開關
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ABB 1SAJ520000R0101
ABB 1SFL587002R1411
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NORGREN E/809080/05M/ERM
CAMOZZI 25S2A20A095S01 25S2A20A095S01 MINICILINDRI 22012693
ABB 1SDA102410R1
NORGREN B82G-2GK-QD1-RFN
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CAMOZZI S6450 4-1/8 S6450 4-1/8 RACCORDI SUP-RAPIDI SPRINT
CAMOZZI CGP-10 CGP-10 PINZE PARALLELE
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TELWIN 122048 OCCHIELLO
ABB 2CKA001754A4589
PNEUMAX 13065000751A
CAMOZZI 600-450/6 OR 20,35X1,78 2081 NBR
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CAMOZZI 31F2A020A060 31F2A020A060 CILINDRI COMPATTI SERIE 31
AECO CLM000060 VL-A170 傳感器
CAMOZZI 31R2A020A180 31R2A020A180 CILINDRI COMPATTI SER.31R
CAMOZZI 45NUT040A0200 45NUT040A0200 GUIDE GUIDE ANTIROTAZIONE
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EWO 423.384 安全閥
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AVENTICS 821300253
DATALOGIC 93ACC1903 SPEED DETECTOR,BEUMER,BS7-BT7,5,50MM
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TEAFLEX MRGM253 M.G. RAPIDO D.23 ISO25
ILME 2098387 ILJSHM 16
CAMOZZI RFO 382-1/8-S04 RFO 382-1/8-S04 VALVOLE DI REGOLAZIONE
ABB 2CDG120069R0011
AVENTICS 614357-0514
CAMOZZI 25-31/10 25-31/10 TESTATA POSTERIORE
MP FILTRI HP0653A25VHP01 過濾器
ABB 1SDA082515R1
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CAMOZZI QP2A050A030(90) QP2A050A030(90) CILINDRI CORSA BREVE
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TEAFLEX EXCMMF50M63 RACCORDO CM- MF 50 M63X1,5
CAMOZZI 61M2P063A1110 61M2P063A1110 CILINDRI SERIE 61
TEAFLEX CMF015A RACCORDO CM- F 15.A 3/4"
ITALWEBER 2174638 Inter.Magn.Dif.B C40 2P 4M 100mA
PIZZATO FR E114-M2 開關
PNEUMAX TPU8X5N
MURR 7000-12441-2250150
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ABB 2CPX020287R9999
CAMOZZI MX2-1/2-M014 MX2-1/2-M014 REGOLATORE MANIFOLD
PNEUMAX 60130511P
NORGREN E/809040/16U/B11
NORGREN RA/8160/200
ABB PPEB2070
CALPEDA I50450421L00 MXV EI 80-4804/D 400/690/50 Hz M160 V1-11T DIS. 90.453
Legrand 417352 MPX 32MA MMS M 17.0A
NORGREN MB002B
ABB 1SBH136005R2171
MURR 7999-40621-2340060
CAMOZZI 62M2C100A0700 62M2C100A0700 CILINDRI SERIE 62
ABB 2CKA006220A0092
EWO 692.083 安全閥
PNEUMAX 2.31652E+11
CAMOZZI 24N2A20A440 24N2A20A440 MINICILINDRI
AVENTICS G551A309-123
MURR 7000-40661-6300060
PIZZATO FA 4813-2DN 開關
PNEUMAX 13205005201
SCHNEIDER XCSE5513
MURR 7000-20111-6260400
ILME 163897 ILCHP 32.42
SCHNEIDER XB6CW1B5B
NORGREN E/809040/16X/WJA
NORGREN RA/8250/IU/STROKE2
PNEUMAX 1273200025
AVENTICS G441AMSG0010A00
CALPEDA 70T52051000 GMV4 65-80B/A V.400/690/50
NORGREN E/809032/05M/SEB
ABB 2CDL010001R1637
SCHNEIDER LV847247
PNEUMAX EMPAD11117ZH
OMAL SM409401CBB0AAMNV00BAFKA0
SCHNEIDER BMH2052P26F1A
ABB 2CPX042137R9999
NORGREN SPI/10346
PNEUMAX 13191256565D
AVENTICS 2400802R
CAMOZZI TRZN080A0096S01 TRZN080A0096S01 TIRANTE ACCIAIO ZINCATO
MP FILTRI MPF7501AF1P10NBP01 過濾器
PNEUMAX 1503630005
NORGREN KA/802080/M/30
CAMOZZI 27T2A40A0160 27T2A40A0160 CILINDRI SERIE 27
AVENTICS 8327B105-021
ABB 2CSG323260R4001
ABB 4TQA650357R1608
CAMOZZI 32M2A040A015V 32M2A040A015V CILINDRI COMPATTI SER.32
SCHNEIDER XUFZ15
AVENTICS G238A044SCA5
UNIVER S1211322100M
AECO C18000052 SC18SM-C5 PNP NO+NC 傳感器
AVENTICS 614357D123108
CAMOZZI MC238-E-5 MC238-E-5 GRUPPO FRL ASSEMBLATO
AVENTICS M450503116PN003
SCHNEIDER MGN61303
MP FILTRI HP1352A10ANP01 過濾器
UNIVER W1011000025M
ABB 1SDA056800R0001
CAMOZZI 1620 8/6-1/8 1620 8/6-1/8 RACCORDI RAPIDI
PIZZATO PX 11400 開關
SCHNEIDER LC2D186P7
NORGREN 2.40115E+15
MURR 7000-12101-6141500
PIZZATO FM 2002-W3M2 開關
Legrand 11166 DLP BASE JOINT
CAMOZZI 61M6P040A0040 61M6P040A0040 CILINDRI SERIE 61
CAMOZZI 62M2P050A0220 62M2P050A0220 CILINDRI SERIE 62
MURR 7000-P8131-P840500
AVENTICS 821401484 OMAL DG448H003YX 閥門執(zhí)行器Manometer,SCHNEIDER KBB25ED44305EW SCHNEIDER XVR13B05S06
RIEGLER 13.DM.20015 SCHNEIDER LXU6.002.869PP UNIVER G-7992 KOBOLD 41R57 250V 1.5A 100W
山東中發(fā)TELCO SMT-8000-MG-J原廠發(fā)貨
一根長為的鋼弦,當前所受張力為T,則其固有頻率為:式中d表示單位長度鋼弦的質量。鋼弦的張力在被測軸受到的扭矩作用下產生變化,進而引起鋼弦振動頻率的變化,頻率的變化量通過磁電式變換器轉換為電信號。鋼弦與磁鋼間的間隙在鋼弦發(fā)生振動的情況下發(fā)生變化,從而磁路的磁阻發(fā)生了改變,進而感應電動勢在線圈中產生,其頻率即鋼弦振動頻率,經放大器放大后電壓信號被輸出測量。鋼弦法工作穩(wěn)定、性能可靠、測量精度高,對于船舶主機等可以快速地進行高質量的測試。