【Q&A】Catalytic Coking Reformate Blending Edition 20171015
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Participation: Reward of 3~5 Wealth points； Correct answer: Reward of 10 wealth points ； Note: This post is valid for 48 hours. Question: What principles should be considered when selecting a groove? Answer: (1) Minimize the amount of weld metal filler, (2) Ensure full penetration and avoid cracks, (3) Consider minimizing welding deformation, (4) Facilitate machining. Use your fingers to get involved – our ultimate goal is for everyone to acquire knowledge. http://bbs.hcbbs.com/static/image/hrline/1.gif http://bbs.hcbbs.com/static/image/hrline/2.gif The answers will be announced automatically in two days. Petrochemical Zone – “Creative Ideas for Energy Saving”: The second phase of this activity is currently in full swing. http://bbs.hcbbs.com/thread-1666758-1-1.html [Daily Question] Summary post for 2017 on the blending of catalytic coking and reforming products. http://bbs.hcbbs.com/thread-1811219-1-1.html [Q&A] Summary post for 2017 on the blending of catalytic coking and reforming products. http://bbs.hcbbs.com/thread-1826018-1-1.html
Answer: (1) Minimize the amount of weld metal filler, (2) Ensure full penetration and avoid cracks, (3) Consider minimizing welding deformation, (4) Facilitate machining.
According to the design or manufacturing requirements of aluminum alloy louver systems, a bevel or groove of specific geometric shape and size that is created on the part of the welded joint to be welded is called a groove. The purpose of preparing a welding groove is to ensure thorough penetration and good fusion at the joint of the two pieces being welded. By providing a groove at the weld joint, it is possible to bring the welding material (electrode or wire) to the proper position, to melt through the base material in accordance with specific welding parameters, and to ensure good fusion of the base materials on both sides. To achieve thorough penetration and good fusion, when selecting a groove, in addition to considering the thickness of the workpiece to be welded, the welding method, welding position, and effects of the welding process, as well as ensuring easy access to the welding material, the following factors should also be taken into account: 1) Use the minimum amount of filler material possible. For example, when plates of the same thickness are butted together, using double-sided V-grooves saves more material compared to single-sided V-grooves, while using double U-grooves in a 1:1 ratio saves even more material. 2) Slope H is easy to process and has low costs. For example, V-shaped and double V-shaped grooves can be processed by gas cutting, while U-shaped grooves generally require mechanical processing or carbon arc gouging followed by surface grinding. 3) It helps to control welding deformation. For example, a single-sided V-groove is smaller than a double-sided V-groove, and a single-sided U-groove experiences less deformation.
Minimize the amount of weld metal filler； Ensure full penetration and prevent crack formation ； Consider minimal welding deformation ； Easy to process
Minimal use of filler material; easy to machine, low cost; helps control welding deformation
(1) Minimize the amount of weld metal filler, (2) ensure full penetration and avoid crack formation, (3) take into account minimal welding deformation, (4) facilitate machining.
Minimize the amount of filler metal; the groove shape should be easy to work with, facilitating welder operation and slag removal; post-weld stress and deformation should be kept as low as possible
(1) Minimize the amount of weld metal filler, (2) ensure full penetration and avoid crack formation, (3) consider minimizing welding deformation, (4) facilitate machining.
(1) Minimize the amount of weld metal filler, (2) ensure full penetration and avoid crack formation, (3) consider minimizing welding deformation, (4) facilitate machining.
(1) Minimize the amount of weld metal filler, (2) ensure full penetration and avoid crack formation, (3) consider minimizing welding deformation, (4) facilitate machining.
(1) It ensures thorough welding of the workpiece (the penetration depth in stick welding is generally 2–4 mm), and it facilitates welding operations; for example, when welding inside a stainless steel water tank is not feasible, a single-sided groove should be used for welding on the outside of the container. (2) The groove shape should be easy to machine. (3) Improve welding productivity as much as possible and save welding electrodes. (4) Minimize the deformation of the workpiece after welding as much as possible.