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Elcometer111-7F铁素体检测仪

2009/10/15 9:24:18 阅读:773次

  • 产品系列名称:Elcometer111-7F铁素体检测仪
  • 产品定货号:MC-00213-00
  • 产地:英国
  • 品牌:易高
  • 推荐:
Elcometer 111-7F铁素体检测仪
The Elcometer 111-7F is a hand-held magnetic gauge for checking the delta ferrite content in stainless steel weld metal. It is pre-calibrated and simple to use. The readings are in Ferrite Number (FN) in accordance with WRC and IIW recommendations.
Operation
Place the nose of the gauge onto the weld metal and rest the middle of the gauge on adjacent parent metal. Turn the central wheel to the zero end of the scale, now turn it in the opposite direction until the magnet clicks off. Read the value.
What is Ferrite
A minimum ferrite content in austenitic stainless steel weld metal prevents microfissures and hot cracks. Too much ferrite can lead to corrosion or embrittlement at high temperatures. It is a magnetic material in an essentially non-magnetic metal and so can be measured by the force of attraction due to a magnet.
Ferrite Number
After much testing around the world, it has been decided that it is impossible to determine accurately the true ferrite content of stainless steel weld metals. Previous figures of percentage content were very dependent on their source, the measuring instrument used ands its calibration. So Ferrite Numbers were established to define ferrite quantity and are related to the ferrite quantity of an equivalently magnetic weld metal
Calibration
The calibration of a gauge is such that the ferrite reading can be related to the seperation of the gauge's magnet from low carbon mild steel plate. The primary standard is thickness and the secondary standard is ferrite samples, and the Calibration Certificate supplied with the Elcometer 111-7F relates the gauge reading to both standards.
Elcometer 111-7F Ferrite Indicator
Range
0 to 30 FN (WRC)
Accuracy
+/- 10% of the reading or +/- 1 FN
 
Model
Description
Part Number
Elcometer 111-7F
Elcometer 111-7F Ferrite Indicator
A111A-7F-
 

产品编号 产品名称 产品简介 产品价格
MC-00213-00 Elcometer 111-7F铁素体检测仪 Elcometer 111-7F铁素体检测仪 0¥

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