How to take preventive measures when welding and cutting
Source：http://www.mu263.comRelease Time：2018-06-02
During the welding and cutting operations, the articles shall be cleaned. Attention shall be paid to the trenches in the working environment, the presence of flammable liquids and flammable gases in the sewers, and whether they may leak into the trenches and combustible and explosive substances in the sewers so as to avoid disasters caused by welding slag and metal Mars. ACCIDENT.
During welding at high altitude, it is forbidden to throw the welding rod head, and the welding and cutting work should be isolated below. After the operation is completed, careful inspection must be done to confirm that there is no fire hazard before leaving the site. Gas cylinders that meet the requirements of relevant national standards and regulations should be used. Safety procedures must be strictly observed in the storage, transportation, and use of gas cylinders.
The pipelines for transporting combustible gases and combustion-supporting gases shall be installed, used and managed as required, and special safety technical training shall be provided for operators and inspectors. When welding fuel tanks and pipelines, weld repair methods should be determined in light of actual conditions. When the replacement method is implemented, the replacement shall be thorough. When the flammable material is strictly controlled during the work, the pressure shall not be replaced and the voltage shall be maintained as required. Oxygen should be strictly controlled during work. To strengthen the detection, pay attention to guardianship, there must be safe organizational measures.
Art creation and craftsmanship are inextricably linked. As an industrial technology, the emergence of welding caters to the needs of the development of metal arts for new technological means. On the other hand, the unique and wonderful changes that the metal produces under the influence of welding heat also satisfy the need of the metal art for a new artistic expression language. The art of metal welding can be separated from traditional metal art as a relatively independent art form in a branching manner because:
First, welding is artistic.
Welding can produce a rich artistic expression language. Welding is usually carried out at high temperatures, and metals produce many wonderful and abundant changes at high temperatures: metal base metals undergo color changes and thermal distortions (ie, weld heat affected zones); the wire melts to form some beautiful textures; Welding defects are often used in the welding art. Welding defects are those defects in the welding process that do not meet the design or process requirements. The main manifestations are welding cracks, pores, undercuts, incomplete penetration, unfused, slag inclusions, welds, collapses, pits, burn-throughs, and inclusions. This is a very interesting phenomenon: The art of welding is usually reflected in the failure of some industrial welding operations, or in some welding defects that industrial welding is trying to avoid.
Second, the welding art language is unique.
The above-mentioned manifestations of various welding defects and welding heat affected zones are formed through welding operations under certain specifications, and these art languages ??can only be produced through welding. The surface effect of welding works of art is that other metal processing techniques are either impossible or difficult to achieve, and thus the art of welding is uniquely artistic. Using different metal materials and using different welding techniques, the art of welding can be used in different metal art forms:
In welding sculptures, welds and cuts are not passively present as a trace of technical processing, but are embodied in a wonderful and indispensable expression language. A welded sculpture, with rough welds exposed on the surface of the sculpture, various irregular cutting marks have also become the artist's beautiful art language... In many cases, due to the rough and rustic style of welding sculpture, metal Corrosion and cockroaches are also mostly reserved according to the needs of the work. Therefore, in the welding sculptures, a kind of non-carved and original beauty can often be felt.
The welds in the steel plate joints at the lower part of the sculpture are very thick. From the standpoint of the welding process, this is obviously not only due to the consideration of the degree of sturdiness of the sculpture. In this sculpture, the lower several distorted welds have been used as An important element of the overall aesthetic of the sculpture has become an indispensable part of it. From the point of view of the sculpture as a whole, whether it is the shape of the upper part or the texture of the lower part, there are twisted welding marks everywhere, and the whole work has achieved the unity of the overall visual language.
If you consider a wall decoration work as a picture, the point, line, surface, black, white, gray, and even color processing on the screen can be achieved by welding. Various types of metal wires of various materials may be applied in different forms on the screen by applying different welding processes. Different metals have different colors, such as bright silver in stainless steel, sub-silver in aluminum, bright black in carbon steel, titanium steel, bronze, copper, brass, etc. And in the case of steel, different steels will be different when heated at high temperatures. The color change, that is, the heat affected zone is different. In addition, cutting is also one of the methods used to create the wall art of welding art. It can be used either in combination with welding or alone, depending on the creator's intentions and mastery of craftsmanship and effects. The above mentioned methods are combined and the richness of the changes can be imagined.
The method of manual plasma cutting is used to make the cutting edge produce a heat affected zone by using the heat of the current when cutting, so that the bright white stainless steel is “stained” with a gradual change of color. At the same time, through the adjustment of the welding specifications, the strong air flow from the torch will “blown” a random texture on the cutting edge at the moment of melting of the cutting steel plate. After the metal cooling is completed after cutting, it will solidify into a beautiful cut. The marks form a texture contrast with the smooth stainless steel plate in the middle. The formation process of this random effect has a certain chance, but it is a phenomenon that will inevitably occur under a certain welding specification.
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