Designation: A/AM – 90 (Reapproved ) Standard Specification for. 3 Oct ASTM AM Standard Specification for Straight-Beam Ultrasonic Examination of Steel Plates_建筑/土木_工程科技_专业资料。. Standard Specification for Straight-Beam Ultrasonic Examination of Steel Plates – ASTM A/AM1.
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Document your query by email because you never know when cases can come back to haunt you. At the proper sensitivity you may not even astm a435 them.
This specification covers the q435 procedure and acceptance for straight-beam, pulse-echo, ultrasonic examination of rolled fully killed carbon astm a435 alloy steel plates.
Needless to say, there was a lot astm a435 arguments with the supplier, who had the plate tested, and sold it as such. These UT signal is not bigger than 75 mm but every 1 or 2 meter this signal have taken. Evaluate indications as mentioned in sec 6 zstm ASTM Most users that specify this for plate ‘cleanliness’ don’t understand just how much in the way of inclusions and lamellar type defects can be in a section of plate, astm a435 still pass the A examination.
Do you have total loss of astm a435 reflection? An equivalent standard is one which covers the qualification and certification of ultrasonic nondestructive examination candidates and which is acceptable to the purchaser. Dent ; We produce these plate.
One thing that was not mentioned is the material of the plate? Within the text, the SI units are shown in brackets. Astm a435 personally would not accept the welds unless I had it aa435 writing that the small cracks you saw under macro section were acceptable.
You are a little off topic. Csaba; you said “any intermediate reflectors are cause for rejection” But we can not do this because we have to work with respect to astm a435.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Are there more in astm a435 material in other places that are too small to detect with the technique you are using?
Astm a435 we take signal awtm cut the plate and look with microscope. Even though the plate had passed A examination, there were lots of surface defects on the gear teeth, which was not acceptable to their customer.
If you are manufacturing the plates and you are getting these small cracks all the time then you need to change your welding process. You say these indications are only mm long. Astm a435 Fullfil all the requirements of Reference standard. Technically the product is acceptable to the ASTM standard. Brenton ; forget the weld.
When you find many cracks which are barely technically acceptable according to the 75mm diameter area then how do you know what the height is. An equivalent standard is one which covers the qualification and certification of ultrasonic nondestructive examination candidates and which is acceptable to astm a435 purchaser.
Bottom line is that ASTM s435 a workmanship based criteria and when dealing with cracks you need to use an ECA based on fracture mechanics. Grid astm a435 shall a4435 continuous along perpendicular grid lines or shall be astm a435 along parallel paths, transverse to the major plate axis, or shall be continuous along parallel paths, parallel to the major plate axis, or smaller centers.
Standard Specification for Straight-Beam Ultrasonic Examination of Steel Plates
Link to Active This link will astm a435 route to the current Astm a435 version of the standard. The test shall be done by one of the asttm methods: It looks like your backwall signal is far too high it is off screen for the ASTM test.
Bring it to the attention of your supervisor and if they deem it astm a435 then let them sign for the weld. I would think that your Gain would be reduced by 8db or more even and that would lower both, the back-surface reflecion and the crack-reflection, that we can see in the A-Scan image.
As a customer I would not accept it. Many times customers really x435 know what ASTM they ‘need’ to call xstm or really understand the astm a435 NDT side of things — that’s where buying from a company that has excellent inspectors like you might save them big trouble down the road!
Its future usefulness has astm a435 be decided by designer or client not by UT man. The macro image is awesome — it would appear to me that astm a435 crack is a little more than um [0. Thickness of plate are 40 mm50 mm and rarely a35 mm. These indications are in the middle of the plate.
Aa435 would have to take an accurate macro section to see the extent of the cracking and then determine why asym cracks are there. Combining values from the two systems may result in nonconformance with the specification. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. Any discontinuity astm a435 causing a total loss of back astm a435 which cannot be astm a435 within a circle is unacceptable.
May be you understand me now. Historical Version s – view previous versions of standard.