Third sentence reads "Non-pressure retaining fillet welds, as defined in other sections of the Code, may as an alternative be qualified with fillet welds only. Where do I find the definition of non-pressure retaining fillet welds? I have searched this site without results and our AI is also...
Do these two coatings offer similar corrosion resistance? The application is fasteners (screws) used on medical exam tables and therefore protection is required to prevent corrosion from exposure to cleaning/disinfecting solutions. Also, since testing per ASTM B117 does not seem appropriate to...
One of our material suppliers recently sent us 303 stainless steel instead of the specified 304. The material was machined and then welded. The welder noticed the appearance of the weld was much different. The supplier was contacted and they admitted their mistake.
We ran a chemistry on the...
We are trying to reverse engineer a flexible light arm with a light attached to it.
The arm is made in three sections. Each section is made from three strands of coiled wire separated by a triangular shaped wire. The smallest section is made from .101” diameter wire, the next .126” diameter...
I am looking for a company that can provide service on a six year old Metorex ArcMet 930SP optical emmision spectrometer. The burns produced by the unit seem weak (for the lack of a better disciption) and the resulting assay analysis is inconsistant and does not match the metal being analyzed...
SA-240, Type 201 14 gauge stainless steel blanks are rolled and welded (autogenous) on a Jetline seam welder. This becomes the shell to which heads (SA-240, Type 304) are autogenously welded to make autoclaves.
One shell is 9" in diameter with a 12" long weld seam. Another shell is 11" in...
A heating element is incorported into the wall of a small (3" diameter by 2" high) die cast aluminum (A360) boiler used to generate steam (from distilled water) for sterilization. After a few cycles, white debris is found throughout the system. EDS analysis confirms that it is mostly aluminum...
A heating element is incorprated into the wall of a small (3" diameter by 2" high) die cast aluminum (A360) boiler used to generate steam for sterilization. Current castings have been Keronite coated. After a few cycles, white debris is found throughout the system. EDS analysis confirms that...
Our steel plate (A36) supplier is offering a different final surface treatment. We currently order pickled and oiled and they are offering clear plate preservative (CPP). This is done by the Blastech Division of the T. F. Warren group. After blasting, a transparent, oil free chemical...
I am looking for a source of elevated temperature mechanical properties of ASTM B16, alloy C36000 free cutting brass rod. Specifically, tensile, yield, and elongation values at 287 degrees F.
grayseal
The product is an autoclave that operates at 40 psi and 285 degrees F. Is it a requirement to have a method for the end customer (doctor or dentist) to manually open the valve from the outside of the unit? That is, is a handle of other device required rather than partial disassembly of a cover...
Any concerns substituting aluminum die cast (JIS) ADC10 or ADC12 for A380.0. The small part sees 40 psi pressure at 285F (autoclave application).
grayseal
We are getting ready to change from 304 ss to 201 ss for the shell section (.074" thick) for tabletop autoclaves designed and produced to ASME Section VIII, Division 1. Information obtained from these forums has cautioned using material produced in places such as China and India due to poor...
Our current application is 3/16" diameter 304 stainless steel, cross wire welded to form a grate. The product is used in a veterinary environment. Would Carpenter Type 204-Cu (ASTM A313) provide similar corrosion resistance to animal products and general disinfectant cleaners?
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We use a Trump L 3030 laser to cut up to 5/8" A36 hot rolled steel. Our current cuts on 5/8" are good but our cuts on 1/2" A36 vary (incomplete cuts) from one side of the sheet to the other. The 5/8" material has more scale than the 1/2". The 1/2" almost has a cold rolled appearance. Niether...
We build to Section VIII, Div. 1. My AI is asking about the purity of our shielding and backing gases. What are the requirements for purity besides the supplier conforming to AWS A5.32? Do we need to perform incoming inspection as we do for welding wire and raw materials? This is an...
We currently use 16 gauge 304 stainless steel for the outer enclosure of an autoclave. The part does not see pressure but is exposed to a small amount of steam after each steriliztion cycle. Does 201 stainless steel have comparable corrosion resistance to 304 in this environment?
grayseal
Manual welding operator factor is the percentage of actual arc time during a specified length of time. I am looking for an industry/OSHA suggested safe operating factor.
The manufacturing industry is pushing to do more with less, but one can only weld so fast. It is not the same as an...
We have a supplier who applies a wear/corrosion resistance surface finish to plain carbon steel bars. The problem is that when we receive the part, it has an objectionable black smut on the surface. The part is used in a medical environmenet. We believe that the process used is some variation...
