Glorysteelwork

Steel mills keep low inventory Iron ore market continues to weaken Today, the domestic iron ore fines procurement prices have steadily dropped. The purchase price of 66% Fe fine powder of Handan Iron and Steel is reduced by 21 to 626 rmb/ton, and the dry basis does not include the tax ex-factory price; the purchase price of 65% Fe fine powder from Xinxing cast pipe is reduced by 21 to 611 rmb/ton, and the dry basis does not include the tax ex-factory price. The purchase price of new Fushun Steel 65% Fe fine powder is reduced by 30 , and the dry basis tax is now remitted to the factory base price. Today, the domestic steel spot market traded in general, the pressure of finished steel products shipments was relatively large, coupled with further decline in iron ore futures, steel mills will increase their willingness to suppress the iron ore market, still follow the “buy up or not buy” market Principle, more transactions, a small amount of purchases, maintaining low inventory

POSCO and Hyundai Steel Will Suspend Blast Furnace Production On June 5, the two largest steel companies in South Korea Posco and Hyundai received official documents from the provincial government in their region to shut down the blast furnace. Currently, the two companies are facing an unprecedented crisis. Since the two major  steel mills  received surveys on exhaust emissions from various operating regions in April, the South Korean Jeollanam-do and Chungcheongnam-do government have informed Gwangyang Plant and Hyundai Plant on April 24 and May 16 Plant to shut down blast furnace for 10 days. On May 27, the government of Gyeongsangbuk-do in South Korea officially issued a notice to the Posco Factory. On May 30, the Chungcheongnam-do government confirmed the punishment measures for the Hyundai Steel factory, but the specific implementation time has not yet been determined. It is understood that the exhaust gas discharged is used to prevent safety accidents during blast f

Tata Steel and ThyssenKrupp Abandoned the Steel Merger in Europe Tata Steel and ThyssenKrupp have abandoned plans to merge their European steel operations as they are expected to be blocked by the European Commission. Glory Steel could offer  CK45 square steel bar  for Thyssen Krupp elevator. Although the joint venture plan ended without results, Tata Steel said that the proposed joint venture was an important strategic move of the company to create a sustainable investment portfolio to help it divest its European operations while completing its assets and de-leveraging of the balance sheet. Tata Steel will continue to adhere to this strategic direction and will continue to explore other strategic ways to achieve this strategic goal in the future. ThyssenKrupp CEO Guido Kerkhoff said that after abandoning the merger with India’s Tata Steel, ThyssenKrupp will continue to find new partners for its steel business. After declaring abandonment of the merger plan last Friday,

Quenching and Tempering Process of Grade 12.9 Fastener Steel The automotive industry is moving toward high performance and light weight. Advances in the automotive industry have placed higher demands on bolts for coupling, namely high design stress and light weight. High-strength bolt has become one of the iconic parts of automotive quality and cost. For example, engine bolts, the original materials have been difficult to meet the requirements of the new engine high stress. The main raw material for the production of fasteners is cold heading steel wire rods. High-strength and high value-added cold heading steel is an important research and development direction of material production enterprises. The rational quenching and tempering treatment process of high-strength fasteners is also one of the important contents of metallurgical industry research. Quenching and tempering is a key process in the production of high strength fasteners. After quenching and tempering, the fasten

Experimental Study on Cold Drawn Steel Square Bar Cold drawn steel square bar  refers to square cold drawn steel. Under normal temperature conditions, the tensile stress exceeds the strength of the original steel yield point, and the steel bar is forced to be stretched, so that the steel bar is plastically deformed to improve the yield point strength and save the steel. Cold drawn steel is a cold extrusion technology with precise mold to pull out all kinds of high-precision, smooth-surface round steel, square steel, flat steel, hexagonal steel and other special-shaped steel. High-precision cold drawn steel square bar is a versatile profile. The cold drawn steel products have the following advantages, like various shapes and specifications. Cold drawn steel bar with different section shapes and different specification tolerance can be drawn by designing molds of different shapes. The angles can be designed to be right angled or rounded. High precision, high quality carbide mo

Development of A32 and A36 High Strength Shipbuilding Steel Plates Since the 1990s, China’s  shipbuilding steel plates  industry has entered the international market on a large scale, and the shipbuilding steel plates industry has gradually become one of the pillar industries in China. With the development of shipbuilding steel plates in the direction of large-scale and light-weight, the general strength ship plates can no longer meet the needs of the hull, and the proportion of high-strength ship plates will continue to increase. Therefore, the development of high-strength shipbuilding plates has broad market prospects. Structural steel for hull can be divided into general strength steel and high strength steel. A32 and A36 are one type of structural steel for high strength hull. With the development of the shipbuilding industry, the requirements for materials are becoming more and more demanding. At present, in the factory approval, besides the certification of the quality s

US Steel Company Will Temporarily Shut Down 3 Blast Furnaces Beginning in 2018, the US government has been promoting the huge contribution of the steel-aluminum tariff policy introduced in March last year to the revitalization of the domestic steel industry. However, there have been different industry trends in the United States recently. US Steel Corp., one of the beneficiaries of the import tariff policy, announced that it would temporarily shut down two blast furnaces in the US and a blast furnace in Europe. The shutdown will continue until the market environment improves. As a professional manufacturer, Glory Steel could offer  steel flat bar crane rail . The decision was made at a time when US steel prices continued to fall, as there was widespread concern that new capacity that emerged in the next few years could lead to oversupply. After the implementation of the new steel and aluminum tariffs in the United States, several US steel mills have announced plans to expand

Welding Process and Application of Q345 Steel Flat Bar Q345 steel flat bar  has good comprehensive mechanical properties, low temperature impact toughness, cold stamping and machinability, and can be used to manufacture welded structures for large ships, railway vehicles, bridges, pipelines, etc., which requires not only good mechanical properties, but also good soldering properties. Q345 steel flat bar has a wide range of applications, and the welding-related structures mainly include various large combined gears, turbine rotors, turbine runners and various shafts. Q345 steel flat bar is low-alloy high-strength structural steel with high strength, high toughness, good corrosion resistance, good weldability and cold forming ability. Q345 steel is generally used in hot rolled state and has good comprehensive mechanical properties. Q345 steel has good toughness at low temperature, and the impact energy at -40 °C is greater than or equal to 27J. If it is used to improve the perfo

Analysis on Structure Adjustment of Cold Drawn Steel Industry Cold drawn steel  refers to the process of stretching steel by tensioning mechanical equipment at normal temperature. Cold drawing produces a cold-strengthening effect. The yield strength of the steel will increase to the unloading stress level. Industrial restructuring and optimization and upgrading are important ways and urgent tasks for transforming economic growth mode and improving the quality of economic growth. The cold drawn steel industry must seize the opportunity to accelerate the adjustment of industrial structure and make the cold drawn steel industry develop soundly. The following six tasks should be done in the adjustment of industrial structure. We should target the automotive industry to improve supporting capabilities. The automobile industry has made great progress in China in recent years, and its output has grown rapidly. It has become a pillar industry for the development of the national econ

Development Trend of the Cold Drawn Steel Industry The  cold drawn steel  process is a process with less cutting, even no cutting in the processing industry. Cold drawn products are widely used in machinery, automobiles, agricultural machinery, electromechanical, military, home appliances and other industries. Compared with the machining production mode, cold drawn has the advantages of simple process, low consumption, energy saving, high surface hardness and large economic benefits. With the rapid growth of China’s national economy, great changes have taken place in various industries across the country, and the industry of cold-drawn steel has also changed. After the cold drawn, the yield strength of the steel can be increased by 20% to 30% with the rust removal and straightening effect. However, the steel plasticity is reduced after cold drawn, and the strength ratio of the steel bar is reduced. Since the design strength of mild steel is based on the yield strength, the col

Development Trend of Elevator Guide Rail Industry The elevator industry is one of the industries closely linked to the development of the national economy. With the rapid development of the national economy and the advancement of urbanization, the elevator industry has also flourished. The solid steel guide rail is an indispensable reference component in the elevator system. The hot rolled  elevator guide rail (T-type) profile steel (elevator guide blank) is important raw material for the solid (T-type) guide rail. In recent years, it has grown with the development of the elevator industry. The elevator guide rail is two or more columns of vertical or inclined rigid rails installed in the elevator shaft or between the floors to ensure the vertical movement of the car and the counterweight along the vertical and vertical directions, ensuring that the escalators and moving walkways are making inclined or horizontal movement along them. The elevator guide rail provides guidance

Research and Prospect of Tower Crane Safety With the development of the construction industry, tower cranes have become widely used in the construction industry as an important symbol of construction and major transportation machinery. Glory Steel could offer  hot rolled steel square bar as crane rail . Our products mainly include Q345B  steel square bar crane rail , S355JR steel square bar crane rail. As a large-scale equipment, the working characteristics of the tower crane are that the items are lifted and moved in a large space according to the needs of the building, which is a dangerous operation. At present, in the construction of construction, the casualties and equipment accidents caused by tower cranes are repeatedly prohibited, and the incidence of major accidents remains high. How to improve the intrinsic safety of tower cranes, rationally use and manage tower cranes, and make tower cranes work better is one of the difficult problems in the construction industry. Th

Innovative Design of Precision Flat steel Bar Finishing Equipment Precision  flat steel bar  finishing equipment is one of the key equipments used in the manufacture of membrane water-cooled walls for boilers. It is used for size finishing, leveling and straightening of annealed flat steel raw materials to meet the pre-weld requirements in size and shape. The membrane type water wall structure boiler has the advantages of high heat transfer efficiency, good sealing performance, light weight of the furnace wall, energy saving and small pollution. With the continuous improvement of boiler performance and environmental protection requirements, the application of membrane water wall has become increasingly widespread. Membrane water wall production technology includes precision flat steel bar production technology, pre-weld pretreatment technology and membrane water wall welding production technology. One of the keys to ensuring the quality of the membrane water wall manufacturing

The growth of market demand in the  special steel  industry is mainly due to the rapid growth of the domestic machinery industry and the automotive industry. The development of the automotive industry has affected the steel industry and has also attracted people’s attention. There are many varieties of steel for automobiles, but mainly thin steel plates and high-quality steel profiles. Different models have different steel consumption. The steel consumption of the car is mainly thin steel sheet, accounting for more than 70% of the steel consumption. Heavy goods vehicles consume more quality steel profiles, of which steel plates account for 56%, structural steel accounts for 36%, and steel strips account for 5%. In the structure of automobiles, trucks currently account for 28% of the total number of vehicles, of which light-duty trucks are developing rapidly, accounting for more than half. Heavy-duty trucks grew moderately, accounting for about 15%. Passenger cars account for 30% of

In the past, due to the limitations of technical conditions and the shortage of products, many steel products that cannot be directly used by users need to be processed by intermediate manufacturers before they can be used. However, the middle factory processing can’t treat steel products appropriately, which will cause steel waste in actual application. Glory Steelwork could offer steel processing, like  S45C steel square bar cutting ,  S45C steel round bar  machining, etc. With the advancement of science and technology in steel companies and the shortening of steel production processes, many steel products that require offline processing in the past are gradually being processed online (on-line heat treatment of steel rails, steel bars, on-line coating of steel sheets, etc.). Moreover, with the advancement of technology, the proportion of deep processing of steel products will also become higher and higher. Through the development of deep processing of steel, the products can be ext

The failure mode of forklift forks is mainly characterized by excessive plastic deformation, brittle fracture and early fatigue fracture. In order to ensure the mechanical properties and process performance of the fork, the carbon content of the material is preferably between 0.3% and 0.4%, and  SCM435 steel  is recommended. In the process of preparation, forging, heat treatment, and welding, the quality requirements should be strictly guaranteed. The fork is an important carrier of the forklift. During using process, once the fork breaks, it will cause serious accidents. In order to ensure the reliable performance of the fork, besides high strength limit, yield limit, good plasticity, toughness and low temperature performance, good surface quality is required. This depends on the material selection of the fork and the quality of the process such as forging, heat treatment and welding. Fork material must have good overall mechanical properties, including forging properties and welda

The advantages of  cold drawn carbon steel  include high precision, high mechanical properties, which are widely used in the automotive industry. The mechanical properties of this type of cold drawn steel are strict, and it has strong tensile strength compared with ordinary  carbon steel . And the yield strength, elongation after break, hardness and other performance indicators are higher than the national standard. The strength index of the production process after annealing, straightening, drawing and polishing according to the conventional process route can reach 550 MPa or more. Many users require higher performance steel to increase the life of the workpiece. By improving the surface reduction rate before the finished product is processed, the performance index can reach 720 MPa, especially the tensile strength reaches 750 MPa or more. According to the previous process route, the tensile strength of the finished product is up to 700MPa, which is for the production of high mechani

S45C steel  is one of the most widely used metal materials. It has low hardness and is easy to be machined. It has high hardness and good comprehensive mechanical properties after heat treatment. It is used in various important structural parts and shaft parts. When the grinding wheel rotates at high speed, gas barrier will be formed around the grinding wheel, which makes it difficult for the coolant to enter the grinding process. Therefore, the following special liquid supply methods must be adopted, such as setting the air baffle, high pressure spraying method, cold hair in the grinding wheel and self-acceleration method, etc. When the feed speed of the  S45C steel  workpiece is 2m/min, the normal grinding force and the tangential grinding force increase correspondingly with the increase of the grinding depth, because the other grinding parameters are constant. In the same case, the grinding depth is increased, and the maximum undeformed chip thickness of the single abrasive grain

The strength level of high-strength bolts is generally divided into four grades of 8.8 grade, 9.8 grade, 10.9 grade, 12.9 grade. The high strength bolts are usually made of medium carbon steel or medium carbon alloy steel, and non-tempered steel, boron steel, FM duplex steel or low carbon martensitic steel. Glory Steel could supply  S20C hex steel bar  for bolts production. Since most of the bolt production requires heading, the bolt steel is mostly cold heading steel. With the increase in the size of cold heading equipment and the speed of production, the demand for cold heading steel is also increasing. The bolt acts role as connection, fastening, positioning, sealing in the mechanism. In addition to the simple positioning of the bolts, the bolts need to be pre-tightened during installation. Therefore, they need bear static tensile load. Some bolts, such as connecting rod bolts, cylinder head bolts are usually subjected to axial pre-tensioning tensile loads, and they are also subj

S355J2 steel  and  Q345D steel  two kinds of low-alloy high-strength steel have good comprehensive mechanical properties, and are widely used in bridges, ships, power stations, boilers, pressure vessels, petroleum storage tanks, lifting and transportation machinery. Glory Steel Work could supply  S355J2 steel square bar and flat bar  as crane rail. S355J2 steel and Q345D steel two alloys are the main materials for the tower section of wind turbines, so the study of the low temperature mechanical properties of this steel is of great significance to the production. For both S355 and Q345D steel materials, the strength gradually increases as the test temperature decreases. This phenomenon occurs because both materials belong to the body-centered cubic metal. In addition, it is difficult for the metal to slip at the low temperature. For the above two reasons, both metals have a sharp increase in yield strength and tensile strength with decreasing temperature. During the low temperature

Quenching and Tempering Treatment of S45C Cold Drawn Steel Parts Cold drawn steel bar , including hexagonal steel bar, round steel bar has advantages, like smooth surface, small machining allowance and steel saving, which has been widely used in machinery manufacturing. According to the technical requirements of high-quality structural steel  cold drawn steel bar , the total decarburization layer depth shall not exceed 1% or 1% of the nominal steel size. The small hairline depth is calculated according to the tolerance of the steel of different diameters. For common parts, the depth is about 0.05mm to 0.08 mm when the steel diameter is 10mm to 30 mm. That is to say, there will be defect on the non-cut surface of the part, and the processing stress during drawing process , which will cause quality problems in heat treatment of the part made of cold drawn steel. Due to the presence of the decarburization layer, individual small hairline and cold tensile stress are very easy to