博文

目前显示的是 六月, 2024的博文

Composite Wear-Resistant Materials

  High Chromium Cast Iron Composite Wear-Resistant Materials Classic Practical Occasions Construction and Earth-Moving Machinery Shovel teeth Excavator and loader side panels Easily worn parts Crushers Filter plates Forehead plates Outlet chutes Swinging strips Crushing chamber linings Crusher gum Roller rings Conveying Equipment Hoppers Conveyor plates Conveying bends Sugar Making Equipment Screen bars Toothed disc ends Ramps Cabinet linings Other Machinery Stone arm racks Drum linings Recycling shovels Scoop wheel sheaths Drilling machines Roller bushings High Chromium Cast Iron Bimetallic Composite Wear-Resistant Pipes Classic Practical Occasions Dredger conveying pipelines Mining field conveying pipelines Feed and discharge conveying pipelines High Chromium Cast Iron Composite Surfacing Plate Classic Practical Occasions Mining Industry Excavator and loader linings Transport truck linings Conveying pipeline elbows Mixer linings and blades Crusher mortar wall linings Cement Indus...

Production and Supply of Iron and Steel Materials

  Red Steel丨Production and Supply of Iron and Steel Materials in Anti-Japanese Base Areas Introduction During the Anti-Japanese War, the production and supply of iron and steel materials were crucial for the military efforts in the base areas led by the Communist Party of China. This article discusses the significant contributions made in the anti-Japanese base areas and liberated regions, focusing on the efforts led by the Eighth Route Army and the New Fourth Army. Production in Anti-Japanese Base Areas Eighth Route Army Efforts The Eighth Route Army established base areas primarily in the Shanxi-Hebei-Shandong-Henan, Shanxi-Chahar-Hebei, and Shanxi-Suiyuan regions. They relied on self-reliance to produce iron and steel using small earthen blast furnaces and crucible furnaces. This indigenous production method, despite its limitations, contributed significantly to the war effort. Key Factories Wuxiang County Self-Defense Force Iron Factory : Established in 1937 by returning worker...

Steel Industry News

  Egypt's Steel Industry Seeks Development Opportunities Government Commitment and Industry Growth Ahmed Samir, Egypt's Minister of Trade and Industry, recently met with representatives from 137 international steel companies at Suez Steel's headquarters to discuss investment in the Egyptian steel sector. He emphasized the industry's crucial role in Egypt's economic development. In 2023, Egypt produced 9.8 million tons of crude steel, solidifying its leadership in Africa. The government plans to prioritize the industry's development and focus on export opportunities driven by global infrastructure projects. Additionally, economic growth in Africa has increased local demand for high-quality steel. Challenges and Innovations However, the European Union's Carbon Border Adjustment Mechanism (CBAM) poses challenges to Egypt's steel exports. To stay competitive, Egypt must transition to low-carbon steel production. The Ministry of Trade and Industry is supporti...

ASTM A588 and A606-4 High-Strength Low-Alloy Steels

  ASTM A588 and A606-4 High-Strength Low-Alloy Steels Overview of ASTM A588 ASTM A588 specifies high-strength low-alloy structural steel shapes, plates, and bars for welded, riveted, or bolted construction. It is primarily used in welded bridges and buildings where weight savings or increased durability are important. Corrosion Resistance The atmospheric corrosion resistance of ASTM A588 steel is significantly better than that of carbon structural steels, with or without copper addition. When exposed to the atmosphere, this steel is suitable for many applications in its bare (unpainted) condition. Characteristics of A606-4 Steel A606-4 is a type of high-strength low-alloy steel known for its rusted appearance. It is popular for making metal panels due to this distinctive look. Natural Weathering Process Corten coils, made from weathering steel like A606-4, do not arrive pre-rusted. Instead, they will rust naturally when exposed to the weather, developing a protective patina over ti...

Can 304 Stainless Steel be Heat Treated?

  Can 304 Stainless Steel be Heat Treated? Stainless steel, created in 1913, is valued for its robustness, recyclability, and resistance to corrosion, heat, and cold due to its chromium content and other alloying elements. These qualities make it suitable for a variety of applications, including medical tools and kitchen items. Properties of 304 Stainless Steel Grade 304 stainless steel is widely used, consisting of 8% nickel and 18% chromium. Its austenitic structure enhances its malleability, making it flexible for various configurations. The high chromium content also provides a strong defense against deterioration. Heat Treating 304 Stainless Steel Heat treatment involves heating and cooling materials under controlled conditions to alter their properties without changing their shape. However, 304 stainless steel cannot be significantly hardened by heat treatment due to its stable austenitic structure. Annealing Annealing is the most common heat treatment for 304 stainless steel...

Recent Trends in Iron Ore Prices

  Recent Trends in Iron Ore Prices Declining Iron Ore Prices Recently, domestic iron ore prices have fluctuated and fallen. On June 5, prices continued their downward trend. At Rizhao Port, the price of 61.5% grade PB powder was 825 yuan/ton, a drop of 5 yuan/ton from the previous day. The price of 61% grade Mike powder was 805 yuan/ton, down 10 yuan/ton. At Qingdao Port, 61.5% grade PB powder was also 825 yuan/ton, down 10 yuan/ton, while 61% grade Mike powder was 800 yuan/ton, down 15 yuan/ton. At Tianjin Port, 61.5% grade PB powder was 850 yuan/ton, down 10 yuan/ton, and super special powder was 685 yuan/ton, down 10 yuan/ton. Overall, imported iron ore prices fell by 5 to 15 yuan/ton. Similarly, domestic iron ore prices dropped. On June 5, the price of 66% acid powder in Tangshan was 820 yuan/ton, a decrease of 10 yuan/ton from the previous day. Causes of Price Decline Increased Supply Industry experts attribute the price decline to supply and demand imbalances. Global iron ore...

Market Update: Scrap Steel Prices

  Market Update: Scrap Steel Prices Overall Market Trends Last week, the domestic scrap steel market continued to fluctuate and showed weakness. Merchants remained cautious with low enthusiasm for operations. Steel companies purchased on demand, and consumption stayed low. The average purchase price for key steel companies was down by 21 yuan/ton for heavy scrap, 19 yuan/ton for medium scrap, and 21 yuan/ton for general scrap compared to the previous week. Market Influences and Company Responses The ongoing decline in the futures market and finished steel prices hurt market confidence and steel company profits. To reduce costs, some steel companies lowered their scrap steel purchase prices again. Lower prices made it harder for bases to receive goods. High temperatures and rainy weather further reduced scrap steel processing and slowed merchant shipping, leaving steel company inventories low. Without significant macroeconomic policy changes to boost demand and market confidence, th...

China Stainless Steel Market Update

  Market Update: Recent Trends in Raw Material Prices Imported Iron Ore Prices Show Mixed Trends Imported iron ore prices experienced slight fluctuations last week, with a subsequent decline in foreign prices translating to lower RMB-equivalent spot prices. Some large steel companies and traders opted to secure fixed-priced foreign resources, leading to a minor uptick in foreign transactions. Towards the latter part of the week, iron ore prices stabilized after an initial drop, particularly noticeable in lump ore and pellet ore. While port inventories decreased recently, upcoming port arrivals remain robust. Domestic steel companies saw minor fluctuations in blast furnace operation rates, with port inventories expected to stay high. Despite reports of production cut plans by some steel companies, those along the river and coast continue to maintain reasonable profit margins. Future forecasts suggest moderate fluctuations in iron ore prices. Stable Outlook for Domestic Metallurgical...

Aluminum Perforated Sheet and Plate

  Aluminum Perforated Sheet and Plate Overview Aluminum perforated plates are lightweight, high-performance metal sheets ideal for various applications. They are easy to fabricate and can be punched into round holes, slots, and ornamental patterns. These plates are perfect for manufacturing perforated metal screens. Material Specifications Material Grade : Aluminum and aluminum alloy Plate Thickness : 1mm to 6mm Plate Width : Up to 2200mm Finish : Natural aluminum or powder-coated in various colors Advantages Aluminum perforated plates are lighter than steel and stainless steel options. They offer excellent corrosion resistance, weldability, and formability. They are available in several sizes, with staggered hole patterns being the most common, in both full and cut sheet sizes. Manufacturing Process Feeding : The aluminum sheet is fed into the machine using a roller system. The die is preloaded. Stroking : The upper section of the machine starts stroking as the sheet is fed. Perfo...

India Fails Again in EU Safeguard Exemption Negotiations

  India Fails Again in EU Safeguard Exemption Negotiations No Agreement Reached On June 18, 2024, India failed to secure an exemption from the EU Safeguard Measure on certain steel products. This setback marks another unsuccessful attempt following last year's failed negotiations with the US for special treatment under the Section 232 tariffs on steel and aluminium. EU's Decision on Indian Steel Recent reports indicate that the European Union has rejected India's request for an exemption. The European Commission, along with EU member states, has decided to extend the Safeguard Measure until 2026 after a rapid review. Persistent Efforts, Continued Failures India has made multiple attempts to obtain exemptions from the EU Safeguard Measure, but each effort has ended in disappointment. The ongoing challenges highlight the difficulties India faces in securing favorable trade terms for its steel industry. Teda Ganghua Metal -17 years Steel Sheets/Plates Supplier Bring detailed s...

Checkered Aluminum Ceiling Plate

  Checkered Aluminum Ceiling Plate Overview Checkered aluminum sheets, made from aluminum alloy and stainless steel, feature uniform chequers on their surface, adding decorative effects to architectural designs. The raised ornamental pattern, without perforations, makes the checker plate both decorative and waterproof, suitable for ceiling panels. Benefits Aluminum checkered plates are lightweight, maintenance-free, and non-rusting, making them ideal for both outdoor and indoor ceiling and wall panels. Specifications Panel Material : Aluminum alloy 5005-H187 Minimum thickness: .063 inches Standard Sizes : 600x600mm 600x1200mm Maximum Dimensions : Width: 2000mm Length: 8000mm Thickness Options : 2mm 3mm 4mm 5mm 6mm Surface Treatment : Polished Coated in various colors Features Weather Resistance : Highly resistant to weather, corrosion, and pollution. Durability : Strong and long-lasting. Variety : Available in multiple finishes and colors. Eco-Friendly : Recyclable material. Applic...

Overview of Electrical Steel

  Overview of Electrical Steel Introduction Electrical steel, also known as silicon steel, is an alloy of carbon, silicon, and iron. It contains 0.5% to 4.5% silicon. The magnetic permeability of iron is greatly enhanced by adding silicon, which improves the efficiency of electric energy generation, transmission, and use. Electrical steel, therefore, has high magnetic permeability, low coercive force, and high resistivity, making it ideal for use in power, electronics, aerospace, and military industries. Classification of Electrical Steel Electrical steel is classified based on production processes and grain orientation: Production Processes : Hot-Rolled Electrical Steel : Largely replaced by cold-rolled electrical steel due to technological advancements. Cold-Rolled Electrical Steel : Preferred for its superior properties and divided into non-oriented and oriented types. Grain Orientation : Oriented Electrical Steel : Grains are aligned in the rolling direction, offering excellent...

Italian Stainless Steel Mill Faces Greenwashing Scandal

  Italian Stainless Steel Mill Faces Greenwashing Scandal Scandal Overview Date : 19 June 2024 Company : Arvedi Acciai Speciali Terni (AST) A significant environmental scandal may be unfolding around the Italian stainless steel manufacturer Arvedi AST, which recently obtained its ResponsibleSteel certification. This issue has gained attention following the resignation of the environment councillor from the Bandecchi council, leading to increased media scrutiny in Italy. Allegations of Greenwashing The ResponsibleSteel certification, developed mainly by European steel manufacturers, is now under scrutiny. Critics argue it serves more as a public relations tool for greenwashing rather than a genuine commitment to environmental responsibility. This suspicion has been reinforced by reports of environmental damage linked to Arvedi AST in Terni. Impact on Stainless Steel Prices Italian stainless steel prices have surged recently due to a widespread shortage. Strikes at a major Finnish st...

High Chromium Cast Iron: Enhancing Wear Resistance and Toughness

  High Chromium Cast Iron: Enhancing Wear Resistance and Toughness Overview High chromium cast iron is known for its high hardness and moderate toughness, making it a popular choice for wear-resistant parts. However, its primary failure mode is cracking due to insufficient toughness. To address this, a composite wear-resistant material combines a tough carbon steel matrix with a high chromium cast iron layer. This combination enhances overall toughness while maintaining high hardness and wear resistance. Technical Features 1. Improved Bonding: High-temperature furnace processing destroys chromium oxide films and surface attachments. Metallurgical bonding is achieved through controlled atmosphere adjustment, prolonged heat preservation, and slow cooling, reducing composite stress. 2. Structural Optimization: Heat treatment design forms a microstructure of martensite and residual austenite in the high chromium layer, with pearlite and ferrite in the substrate layer. 3. Customized Per...

Aircraft Aluminum Alloy 2024

  Aircraft Aluminum Alloy 2024 What Is Aircraft Aluminum Alloy? Aircraft aluminum alloy is an ultra-high-strength deformed aluminum alloy widely used in the aviation industry. It surpasses ordinary aluminum alloys in strength, hardness, toughness, fatigue resistance, and plasticity. This alloy has excellent mechanical and processing properties, good plasticity after solution treatment, and effective heat treatment strengthening. It is considered an ideal material for aviation structures due to its high strength and good toughness. Aluminum Alloy 2024 Aluminum alloy 2024 is a typical duralumin alloy, specifically an Al-Mg-Cu aluminum alloy. Its composition includes 4.5% copper, 0.6% manganese, and 1.5% magnesium. This combination provides a balanced composition and good overall performance. Key features of 2024 aluminum alloy include high strength and a certain degree of heat resistance, making it suitable for parts that operate below 150°C. Notably, when the temperature exceeds 125...