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FAQ

hello, I am trying to figure out what wok to get and came across a website that offers many woks out of different materials. what is the best, or considered original (traditional)? I have a couple of cast iron pots and pans - too heavy, so I am assuming it will take some time for a cast iron wok to heat up. what about carbon steel and stainless steel? Thanks

Traditionally woks do take a long to heat up but the trick is that they hold the heat for a long time, so either stainless steel for convenience or cast iron for tradition. Don't use anything non stick, chinese cooking uses a lot of oil, the non-stick will just be unhealthy when it starts to burn off. The cast iron will be good because it'll heat up and keep its heat, in chinese homes that have the wok, the wok usually gets heated up throughout a few hours, you need it to be really hot all the way through all over the pan to do chinese cooking. also traditionally woks are built into home or are big and positiioned over a fire not to be moved too much, the point is to keep stiring and stiring and stiring until your food is cooked.

Some common coil inspection techniques include visual inspection, ultrasonic testing, magnetic particle inspection, eddy current testing, and dye penetrant testing.

The maximum temperature that steel coils can withstand varies depending on the specific grade and type of steel being used. Steel is known for its high heat resistance and can typically withstand temperatures ranging from 550°C to 1,100°C (1,022°F to 2,012°F), depending on the grade. However, it is important to note that prolonged exposure to high temperatures can cause steel to lose its structural integrity and result in permanent deformation or even failure. Therefore, it is crucial to adhere to the manufacturer's guidelines and specifications when determining the maximum temperature that steel coils can withstand in specific applications.

I was wondering whether anyone knew if painted steels rusts at the same speed as steel that isn't painted. Also, does steel rust quicker than aluminium?Thank you

Painted Steel

Steel coils can be stored in a humid environment, but it is not ideal. Humidity can cause steel coils to rust and corrode, leading to potential damage or degradation of the steel. It is recommended to store steel coils in a dry and well-ventilated area to protect them from the negative effects of humidity.

Appliances can indeed utilize steel coils for their production. They are frequently employed as the principal raw material in the manufacturing of various appliances, including refrigerators, stoves, dishwashers, and washing machines. To meet appliance specifications, these steel coils are typically processed and molded into specific parts like panels, frames, or doors. The utilization of steel coils in appliance manufacturing provides several benefits, such as robustness, longevity, and resistance against corrosion. Moreover, steel coils can be effortlessly fabricated and manipulated to accommodate the distinct design needs of different appliances, making them a versatile and frequently employed material within the industry.

I want to anodize steel using heat. some steel turns gray instead of coloring when I heat it up using a torch.

Steel doesn't anodize in the sense that aluminum and some other metals do. However, it can be heat-colored. The trick is to clean the surface first (it must be oxide free), then heat gently until the colors appear. These are called temper colors in steel. They are due to a thin adherent layer of oxide that forms and thickens as temperature is increased. They are quite temperature dependent. As the steel is heated, the first color to appear is pale yellow. This will progress through darker yellows, browns, purples, and blues as the temperature rises. Above blue, the oxide becomes the gray/black color you are apparently getting - this is the result of heating too fast and too hot. See the chart at the site below for colors in plain carbon steel. Note that the temperatures are pretty low - It all starts around 400 F and if you go above 600 F the show's all over.

Building the bulwurk, general use on trawlers. What kind of steel is best suited.

How big is your trawler going to be and what use, The ones you see off the Alaska Coast or a Gulf Coast Shrimper? My preference in today's economy would not make sense and that is Aluminum.....not steel at all, maybe even Fiberglass, but $$$$ talk so Steel is cheaper, but you need to know what you are doing. The designer of the hull should have specified the right /preferred grade. It today's world there are many more choices available. You use a mild steel, most often grade A or B, but some applications call for grade D. Check your blue prints and list of materials. Edit. Ok I understand. There are 2 ways to go. One is use a relatively cheep steel and use higher cost epoxy primers and paint, often requiring special surface preparation just before priming, or two, using a much higher cost steel with more chrome and nickel in it. Grades that begin with #3xxx These are weldable with rods that are available, and can be welded directly to mild steels. However these are 3X the cost. If your a Shrimper, I'm guessing gulf coast. I worked with several boat yards in the 70's installing spray urethane foam for insulating there holes. So I've been around lots of small yards from Florida to Texas. I'd call the nearest steel warehouse and ask what they would recommend. You might find what you want at a scrap yard. I've lucked out several times picking up 1/4 plate scrap$ and I'd bet the scrapyard guy would know just what you need. I know there are places to get what you need in Mobile and New Orleans. Good luck!