Glorysteelwork

Inspection Measures about 30×50 Crane Rail Quality The quality of the 30×50 crane rail installation directly affects the quality of the crane’s operation. Only by grasping the quality control from the source can the installation quality of the 30×50 crane rail square steel bar be guaranteed. Through the understanding of the 30×50 crane rail installation technology, the inspectors can master the key parts and technical points of the inspection process, and ensure the quality of supervision and inspection. Span measurement 1.Tension measurement can be carried out with steel tape spring dynamometer. 2.The span should be measured at each column, and the selected points should be corrected by the diagonal method to improve the accuracy of the measurement. 3.The same tension should be used during the measurement and the measurement reading should be corrected. 4.The final measurement reading after the adjustment is completed shall be the official record of the acceptance of the work. As for...

Seamless Line Welding Technology of Crane Rail The seamless welding of the crane rail can significantly improve the smoothness of the crane rail, eliminate the harmful space generated by the crane rail joint and improve the service life of the crane rail. Welding of steel rails by arc welding began in the 1950s. With the method of using the end face of the rail end face, or the vertical welding method. It takes 3 to 5 hours to weld a joint, and some local areas cannot be effectively fused, so the welding quality is not ideal. The static bending strength is less than half of the other welding methods, and the service life is less than one year. In addition, the welding time is too long, and the labor intensity of the welder is large, so the actual use effect is poor. The narrow gap forced forming arc welding method is currently widely used in Japan and Europe, and is mainly used for wire welding of rails. Among them, Japan mainly applies to the Shinkansen’s orbital welding of trains. D...

QU80 Crane Rail Welding Material and Welding Process Since the shape of the end face of the QU80 crane rail is complicated, the welding of the QU80 crane rail waist and the QU80 crane rail top needs to be continuously performed. Such welding method is completely different from the slag removal of each section of the welding. It requires the viscosity of the slag of the electrode to be small at a high temperature and the specific gravity should be small. The slag is not easily wrapped in the weld metal during welding, and the slag floats in the separation of the liquid metal. According to the characteristics of this process, the previous slag system was adjusted to improve the alkalinity of the slag, appropriately increase the content of Mn in the alloy composition, and improve the process performance of the electrode. Before welding, the electrode is dried at 350 ° C – 400 ° C. Place the electrode in the insulated tub before use. The material of the QU80 crane rail is U71Mn, and the Q...

Research on QU100 Heavy Crane Rail Welding Technology With the continuous increase of import and export goods in the country, port cranes have become one of the main equipment for hoisting goods in ports. The crane is moving towards large tonnage and high efficiency. The crane rail installation is developed from the traditional rigid fixed rail to the welded joint. In view of the shortcomings of the welding process of the QU100 heavy crane rail , we have explored the QU100 heavy crane rail welding process. The components of QU100 heavy crane rail are sensitive to quenching during the slow cooling process, and the martensite structure is generated in the heat-affected zone to form a brittle hardening zone, which is prone to cracks. At the same time, due to the effect of the tissue stress on the weld metal, it may cause cracks in the overheated zone. During the welding process, part of the base metal is melted into the molten pool, which increases the carbon content of the weld metal and...

South Korea’s Posco Stainless Steel Production Fell Down Recently, South Korea’s Posco Steel (POSCO) released a report showing that in the second quarter of 2019, its stainless steel output was 466,000 tons, down about 6.4% from the previous quarter’s 498,000 tons and about 12.7 from the previous year’s 534,000 tons. Its stainless steel sales volume was 448,000 tons, down by about 11.5% and 15.2% from the previous season’s 506,000 tons and 528,000 tons in the same period of last year. The average price of stainless steel increased by 99,000 won/ton. In the same quarter, its crude steel output increased by 9.44 million tons compared with the previous month, while steel production decreased to 8.855 million tons due to production line maintenance. Steel sales volume was 8.746 million tons, of which sales to both domestic and foreign markets both decreased.The world’s top quality products (WTP) accounted for a year-on-year decline and the chain fell to 29.6%. Its sales fell to 7.476 tril...

ThyssenKrupp Targets ASEAN Additive Manufacturing Market Recently, ThyssenKrupp released a research report on the potential of additive manufacturing in ASEAN countries. Additive Manufacturing (AM), commonly known as 3D printing, has become an important development direction for advanced manufacturing technology. Glory Steel Work could offer ABS shipbuilding steel plate for ASEAN countries shipbuilding industry. According to the report released by ThyssenKrupp, additive manufacturing has been widely accepted on a global scale, but progress has been slow in ASEAN countries, and the prospects for additive manufacturing in ASEAN countries are bright. According to the report, investment in ASEAN countries accounts for only 5% to 7% of Asia’s $3.8 billion budget this year. However, given the contribution of ASEAN countries to global manufacturing output, the market potential for additive manufacturing is huge. It is reported that the manufacturing output value accounts for 20% of the GDP o...

Measures for Aluminum Thermal Welding of Crane Rail The construction process of aluminum thermal welding of crane rail steel flat bar includes welding tool preparation, rail preparation, rail, card sanding, hoe preparation, preheating, ignition and pouring, unpacking, pushing tumor, grinding and cleaning the site. Welding materials include flux, sand, sealing mud, high temperature matches, helium, oxygen and propane. The above materials are consumable materials, in which aluminum heat soldering flux, soldering materials, etc. should be placed in a dry place to prevent any behavior that may cause the solder material to get wet. Welding tools include preheater, angle grinder, wire brush, clamp, steel ruler, pusher, special grinding machine, multi-purpose stick, slag hopper, saw rail machine, rail, and gauge. Construction materials, tools and equipment include crane rail steel flat bar, rail fasteners and backing plates, adjustable wrenches, track wrenches, crowbars, hand hammers, protec...