Hello, I am on the Board of Directors for my condo in Toronto and I'm wondering what is the code for the Make-Up air for a condo hallway. Is it dictated by ASHRAE or by the local building code?
What is a typical value for such measurement. I assume it is listed in Air Exchange / hour? Is...
If I have a pin hole in a anti-corrosion paint, will corrosion be accelerated in the area where the pin hole occurs.
The paint is applied to a 1080 Rail Steel.
The Steel is currently corroding quite rapidly, and one of our ideas is to coat the steel with a anti-corrosion paint. One of the...
I am looking for a Fine Pearlite stucture after a piece of rail is thermite welded. The rail steel is essentially a 1080 Carbon Steel. Specifically the composition is:
Weight Percentage, %
Carbon, C
0.72 - 0.84
Manganese, Mn
0.70 – 1.25
Silicon, Si
0.10 – 1.00
Phosphorus, P...
I am wondering how well ASTM A148 - (105-85) Cast Steel can be welded to a CSA 50W plate?
We are currently welding a ASTM A27 Cast Steel to a 50W plate but would like to upgrade the material.
Thanks in advance.
I am trying to help a former co-worker who used to work in the Automotive Industry as a Mechanical Design Engineer. He designed automotive componenets for a parts supplier. We both have approx 10 years experience and I have moved on and found a job and he is still looking and finding this...
I am looking for the PWHT (Post Weld Heat Treat) temperature for tangent (straight) standard rail 300 HB (Brinell Hardness). The following is the chemical composition (weight percent):
Carbon 0.74 - 0.84
Maganese 0.80 - 1.1
Phosphorus 0.035
Sulfur 0.037
Silicon 0.01 - 0.060
Nickel 0.25 (max)...
We apply electrical wire by thermite weld to subway rail.
The thermite weld creates a btittle martensite area which has been known to crack.
I was wondering if I can temper the metal on site (at the subway track). Is this possible and if so how?
Thanks in advance
I was wondering if you have to perform a post thermal bake for 3 hours following a Phosphate Grade I ASTM F1137 finish to prevent Hydrogen Embrittlement?
I am trying to compared the durability of various grades of both Phosphate and Zinc plating. We (Engineers) were thinking that besides the ASTM B117 Salt Spray Test that we should do a test were the parts are tumbled and then evaluated for corrosion resistance because the bolt nut assym in...
We are investigating replacing our Electrodeposited Zinc plated nuts and bolts with Phosphate + Oil due to the following reasons. Can someone please verify if these are true.
1)Phosphating is more cost effective? True or False?
2)Electrodeposited nuts and bolts will have a section on the...
