fischer ferritscope-菲希爾鐵素體分析儀
篤摯儀器代理供應(yīng)*鐵素體分析儀，鐵素體測試儀，奧氏體和雙相鋼不銹鋼鐵素體分析儀
Chemical, energy and processing plants are often subjectto heat, aggressive media and high pressure. Thesecircumstances demand steel with high corrosion and acid resistance that are resilient even at high temperatures.If the ferrite content is too low, then the weldedmaterial is susceptible to hot-cracking, if the ferrite contentis too high, the toughness, ductility as well as thecorrosion resistance of the steel are reduced. For duplexsteel, a ferrite deficit in the area of the weld seam resultsin stress corrosion cracking and reduction in strength.
The FERITSCOPE FMP30 measures the ferrite content in austenitic and duplex steel according to the magnetic induction method. All magnetisable structure sections are measured i. e., in addition to deltaferrite also strain-induced martensite, for example, or other ferritic phases. It is suited for measurements according to the Basler- Standard and according to DIN EN ISO 17655. Areas of application are onsite measurements, e. g. of austenitic platings as well as weld seams in stainless steel pipes, containers, boilers or other products made of austenitic or duplex steel.
奧氏體不銹鋼焊縫中δ鐵素體的存在會影響焊縫的強韌性、耐腐蝕性及焊接性,工程現(xiàn)場的焊接過程通常借助鐵素體含量測定儀來控制δ鐵素體的含量。化工設(shè)備和石油加工廠通常要承受高溫、高壓，同時要耐腐蝕。外部環(huán)境要求所用鋼材即使在高溫下也要有足夠的耐腐蝕和耐酸性能。如果鐵素體含量太低，焊縫受熱后容易產(chǎn)生裂紋；如果鐵素體含量太高，焊縫將喪失韌性和延展性。對于雙相鋼，如果鐵素體含量太低，焊縫受到張力或發(fā)生振動時容易破裂。 FeritScope FMP30根據(jù)磁感應(yīng)方法測量奧氏體鋼和雙相鋼中的鐵素體含量。儀器能識別所有的磁性部件，也就是說，除了delta鐵素體，還能識別其轉(zhuǎn)化形式馬氏體。儀器符合Basler標(biāo)準(zhǔn)和DIN 32514-1標(biāo)準(zhǔn)，適合于現(xiàn)場檢測，可以測量奧氏體覆層、不銹鋼管道、容器和鍋爐焊縫內(nèi)以及奧氏體鋼或雙相鋼制造的其他產(chǎn)品內(nèi)的鐵素體含量
圖為：焊縫中鐵素體含量的測量
Calibration / Standards
（校準(zhǔn)/校準(zhǔn)片）
To obtain comparable measurement results, the instrumentsmust be adjusted or calibrated using standards that can be traced to internationally recognised secondary standards. For this purpose, the IIW (International Institute of Welding, UK) developed secondary standards that have been determined by the TWI (The Welding Institute, UK) according to the method described in DIN EN ISO 8249 and ANSI/AWS A4.2. Helmut Fischer offers certified calibration standard sets that are traceable to the TWI secondary standards for corrective and master calibrations. The standards of the FISCHER calibration standard sets list in addition to the ferrite numbers FN also the % Fe values. Influences including the shape of the part to be measured (strong curvature, thickness of the ferrite-containing coating, etc.) can be taken into account through corrective calibrations with customer-specific calibration standards or through correction factors (included). The normalisation and corrective calibration are stored application-specific in the respective application memory of the instrument
在使用時有以下特性：
? 無損測量奧氏體鋼和雙相鋼內(nèi)的鐵素體含量，
? 測量范圍：0.1-110 FN 或 0.1-80% Fe
? 儀器操作簡便.大顯示器，高對比度，240x160像素.
? USB接口連接PC或打印機.
? 機械滑蓋保護(hù)測量時用不到的按鍵
? 開機后即可測量.自動探頭識別.
? 通過儀器按鈕或PC可實現(xiàn)外部觸發(fā)測量
? 測量完成后有聲音提示信號.
? 只需一次校準(zhǔn)就能滿足常用的測量范圍0.1-90FN。
? 校準(zhǔn)用的標(biāo)準(zhǔn)片可追溯到TWI二級標(biāo)準(zhǔn)片，
? 也提供客戶定制的標(biāo)準(zhǔn)片.
? 可調(diào)整的儀器自動關(guān)機和連續(xù)操作時間
? 按鍵可鎖定/限制操作模式；
? 多種狀態(tài)顯示（例如：電池電壓下降時的警示信息）
? 多種語言設(shè)置.測量單位可切換 WRC-FN 或 %Fe
存儲統(tǒng)計和測量模式
1. 可儲存20,000個測量數(shù)據(jù).可儲存100個應(yīng)用程式，可儲存4000個數(shù)據(jù)組
2. 數(shù)據(jù)組帶日期和時間標(biāo)志.統(tǒng)計功能：平均值、標(biāo)準(zhǔn)偏差、小值、大值和范圍
3. 帶高斯曲線的直方圖顯示， 可輸入工藝公差極限并計算相應(yīng)的工藝能力指標(biāo)Cp和Cpk
1. 連續(xù)測量模式下，讀數(shù)還可以在上下限之間模擬顯示
2. 矩陣測量模式下可以進(jìn)行多點測量，例如：針對預(yù)先定義的表面排列.平均測量模式：僅儲存多個讀數(shù)的平均值
3. 區(qū)域測量模式：探頭提起后儲存讀數(shù)并取平均值
4. 離奇值控制功能可自動過濾錯誤測量值
5. 可以重寫已儲存的錯誤讀數(shù)
6. 應(yīng)用程式連接模式：可共享零位和校準(zhǔn)信息
7. 通過可選的PC軟件MP-Name可為應(yīng)用程式命名
8. 通過可選的PC軟件PC-Datex可將數(shù)據(jù)導(dǎo)出到Excel表格內(nèi).通過可選的PC軟件PC-Datacc可將數(shù)據(jù)導(dǎo)出到Access
9. 電池供電或外接充電器（選配件）
背景和應(yīng)用：
化工設(shè)備和石油加工廠通常要承受高溫、高壓，同時要耐腐蝕。外部環(huán)境要求所用鋼材即使在高溫下也要有足夠的耐腐蝕和耐酸性能。如果鐵素體含量太低，焊縫受熱后容易產(chǎn)生裂紋；如果鐵素體含量太高，焊縫將喪失韌性和延展性。對于雙相鋼，如果鐵素體含量太低，焊縫受到張力或發(fā)生振動時容易破裂?；瘜W(xué)和石油化工行業(yè)越來越多地使用雙相鋼，例如：圖1和圖2中的鍋爐容器就是用高防腐性能的雙相不銹鋼制造的。如果焊縫處的鐵素體含量過低，受到張力或發(fā)生振動時容易破裂。然而，在焊接雙相鋼時，由于焊接添加劑或熱處理不當(dāng)，焊縫處的鐵素體含量非常容易超標(biāo)。只有現(xiàn)場檢測才能確保處理過程不會改變*佳的鐵素體含量，防止機械性能或防腐蝕性能的下降。
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