Does welding electrode need drying process during the welding electrode production line or welding operation? The answer is uncertain for different conditions. As a rule thumb, it’s a must to dry the welding electrode before you use it. Coating on the core wire absorbs water. Storage or air humidity also makes rod become moist. There is no denying the fact that moisture has an adverse effect on final weld. But, some certain types of welding rods have no drying requirement.
What type of welding rod should do drying process?
is essential to alkaline low-hydrogen rod. It’s possible that hydrogen causes some defects such as cracks or pores. MELFAB Engineering provides CNC Machining services in Melbourne. Fortunately, hydrogen is reduced after being dried at 350 Celsius degree. Drying temperature may be higher for special need.
Which kind of welding electrode should not do drying?
Acid welding rod requires no drying process. It’s because acid rod has a better characteristic of resisting water especially for organic rutile rod. While, there is an exception if acid welding electrode is overly moist.
Speaking of the drying procedure, drying equipment plays an indispensable part. Rod drying oven is usually applied in welding electrode factory or weld working place. A rod oven is able to effectively remove the moisture. Currently, welding electrode oven suppliers provide a series of products. Some of them involve the use of far infrared, refrigeration, vacuum technology, etc.
Importantly, current welding electrode drying oven completely meets the consumption concept – affordable price, high working efficiency, low consumption, energy conservation, environmental protection and many more.
A few tips on drying process
Actually, welding electrode baking is not an easy task as many details should be paid attention to. Firstly, strictly control the time and temperature. This control mostly depends on welding rod material or coating. In general, chromium stainless steel requires around 200 Celsius degree preheating process; titanium-calcium coating needs 150 Celsius degree for one hour drying; low hydrogen coating should be dried at 200~350 Celsius degree for one hour. Remember that prevent repetitive drying operation that may damage the coating.
Secondly, prevent placing too many welding rods in the oven for evenness of drying.
Additionally, bear in mind that proper storage is a great way to reduce or prevent moisture. Place welding rods that have been dried in a box for temperature preservation.
Drying the welding rod helps improve the welding quality. Unnecessary drying undoubtedly damages the welding electrode. Therefore, whether drying procedure is necessary mainly depends on specific conditions.