As a professional in the field of welding, I can tell you that stainless steel is indeed a challenging material to work with due to its high corrosion resistance and high alloy content. However, it is certainly possible to stick weld it, which is also known as Shielded Metal Arc Welding (SMAW). This process involves using a consumable electrode coated with flux that protects the weld area from atmospheric contamination during the welding process.

When it comes to welding stainless steel, there are several key factors to consider:


1. Material Selection: The type of stainless steel you are working with will determine the appropriate filler material and welding parameters. Austenitic stainless steels, such as 304 and 316, are the most commonly welded due to their ease of welding and good corrosion resistance.


2. Electrode Selection: For stick welding, you must choose an electrode that is compatible with the type of stainless steel you are working on. The electrodes are typically classified by their AWS (American Welding Society) classification number, which indicates the type of current to use (DC or AC), the position of the weld, and the penetration characteristics.


3. Cleaning: Stainless steel must be thoroughly cleaned before welding to remove any contaminants that could cause defects in the weld. This includes grease, oil, dirt, and rust.


4. Welding Technique: Proper technique is crucial when stick welding stainless steel. The arc should be maintained at a short distance, and the electrode should be manipulated to ensure full penetration and fusion without overheating the base metal.


5. Post-Weld Cleaning: After welding, it's important to clean the weld area again to remove any slag or spatter. This helps to prevent corrosion and maintain the aesthetic appeal of the stainless steel.


6. Heat Treatment: Depending on the application, post-weld heat treatment may be necessary to relieve stresses and restore corrosion resistance.

Regarding the use of a MIG welder or wire feed for stainless steel, it's true that gas is required because stainless steel is not available in a flux-cored form. The gas serves as a shielding agent to protect the weld pool from atmospheric gases that could cause contamination.

Now, let's move on to the translation of the above information into Chinese.

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Welding Stainless Steel. ... It isn't the easiest metal to weld. Stick and wire feed welders can both be used when you want to weld stainless steel, but if you use a MIG welder, or wire feed, you have to use gas. This is because you won't find stainless steel in a flux-cored form.Feb 24, 2011read more >>