Steel Guide

2021-10-18 Steel World Comments Off on Characteristics of the use of steel materials

(1) Melting point °C The melting temperature when a metal material changes from a solid state to a liquid state (2) Specific heat capacity c J/(kg·K) A certain substance per unit mass absorbs heat whe...

2021-10-18 Steel World Comments Off on Valve status, application and development

Infrastructure construction is the focus of China’s economic construction. Water supply and drainage projects, especially sewage treatment projects, are large in scale. WTO has entered, and the ...

2021-10-18 Steel World Comments Off on What is 35Mn2 steel? What are the applications of 35Mn2 steel?

35Mn2, alloy structural steel. Standard: GB/T 3077-1999 【Main Features】 The plasticity is moderate during cold deformation, and the machinability is fair, but the weldability is poor. Compared with 30...

2021-10-18 Steel World Comments Off on What is the meaning of pipeline valves

In the fluid piping system, the valve is the control element, and its main function is to isolate the equipment and the piping system, adjust the flow, prevent backflow, adjust and drain the pressure....

2021-10-18 Steel World Comments Off on Analysis of World Iron Ore Manufacturing Trends

According to Mining Journal, the world’s iron ore output in 2009 was about 1.59 billion tons, a decrease of 7.6% from 2008. After years of continuous growth, the world’s iron ore output de...

2021-10-18 Steel World Comments Off on What is S136H steel? What are the applications of S136H steel?

Pre-hardened HB290-330 quenching hardness: HRC52S136H steel characteristics: 1. The best polishing rotation 2. Good permeability 3. Good corrosion resistance 4. After this steel is quenched and mirror...

2021-10-18 Steel World Comments Off on Material selection of finishing stand roll

The large-scale steel finishing rolling stand must ensure the dimensional accuracy of the profile, the surface quality, and realize the negative tolerance rolling. Therefore, the finishing roll must h...

2021-10-18 Steel World Comments Off on Thoughts on Upgrading the Ore Drawing Scheme of the Coarse Crushing Chamber in Dahongshan Iron Mine

Dahongshan Iron Mine is a large-scale mine under construction in southwestern China. It is an important raw material base for Kunshan Iron and Steel Group, with a designed comprehensive production cap...

2021-10-18 Steel World Comments Off on What is special steel? What are the application areas of special steel?

310SS31008 310S is austenitic chromium-nickel stainless steel with good oxidation resistance and corrosion resistance. Because of the higher percentage of chromium and nickel, 310S has much better cre...

2021-10-18 Steel World Comments Off on Understanding and classification of alloy structural steel

1. Quenched and tempered steel Heat-treated steel that undergoes quenching and tempering below AC1 is called quenched and tempered steel. Traditional quenched and tempered steel refers to quenched and...

2021-10-18 Steel World Comments Off on Design and Application of Distributed Variable Frequency Pump System

1. The principle of distributed variable frequency pump system 　　In the traditional heating branch pipe network system, a set of circulating pumps are generally installed at the heat source or in the ...

2021-10-18 Steel World Comments Off on Breathable brick base brick

Patent No.: 99249349.8 Patentee: Baoshan Iron and Steel (Group) Company Technical Abstract: This utility model discloses a base brick of a breathable brick, which belongs to a base brick of a combined...

2021-10-18 Steel World Comments Off on What is w18cr4v steel? What are the applications of w18cr4v steel?

We produce and export high-quality w18cr4v steel, seamless and welded 2 halved butt-welded pipe fittings”. We do complete quality and performance measures for these super austenitic w18cr4v stee...

2021-10-18 Steel World Comments Off on What is polypropylene (PP) pipe fittings for water supply

Types of Standards Industry Standards of the People’s Republic of China Standard Issuing Units Approved by the Ministry of Light Industry of the People’s Republic of China on January 06, 1...

2021-10-18 Steel World Comments Off on Selection of welding methods for carbon structural steel and low-alloy high-strength steel

The important structures currently under construction of the Three Gorges Project mainly include power station penstocks, hydraulic turbine seats, and ship gates. The quality of the construction proce...

2021-10-18 Steel World Comments Off on Loose steel ingot

Shrinkage porosity kills the tiny pores inside the steel ingot. The tiny pores that are concentrated in the axial zone are called loose in the center, and the tiny pores scattered in other parts are g...

2021-10-18 Steel World Comments Off on What is H13 steel? What are the applications of H13 steel?

C: 0.32~0.45, Si: 0.80~1.20, Mn: 0.20~0.50, Cr: 4.75~5.50, Mo: 1.10~1.75, V: 0.80~1.20, p≤0.030, S≤0.030; H13 steel plate width (210- 610) * thickness (6-80) 　 hot rolled H13 steel pipe outer diameter...

2021-10-18 Steel World Comments Off on What is M2 steel? What are the applications of M2 steel?

Factory hardness: ≤255HB Hardening temperature: 1220-1240 Hardness: ≤63 cold forging dies, fine punching dies, powder pressing dies, etc., shearing machine dies, glass fiber-added plastic dies, etc. S...

2021-10-18 Steel World Comments Off on What is 420 steel? What are the applications of 420 steel?

After tempering at 200℃ (at least 4 hours), the hardness can reach more than 48HRC, which has better polishability and better corrosion resistance. C Carbon Si Silicon Cr Chromium Mn Manganese Mo Moly...

2021-10-18 Steel World Comments Off on Immersion nozzle and its function

The immersion nozzle is to lengthen the tundish nozzle and insert it to a certain depth below the molten steel surface of the mold, which seals the pouring flow. The advantage of using the immersion n...

2021-10-18 Steel World Comments Off on Manufacturing and application of polybutene pipes

1. Overview of polybutene (PB) pipelines: In recent years, the amount of cold and hot water plastic pipelines used in buildings in China has soared. By 2007, the total amount had reached 400,000 tons....

2021-10-18 Steel World Comments Off on Causes and solutions of oxidation and slag inclusion in aluminum castings

Defect characteristics of oxidized slag inclusion: most of the oxidized slag inclusion is distributed on the upper surface of the casting, at the corners of the mold where no gas flow. The fractures a...

2021-10-18 Steel World Comments Off on Prevention of common problems in municipal drainage pipes

The drainage system is one of the important facilities for the normal use of other engineering facilities in its service area, and it is very important to ensure the quality of its construction. Based...

2021-10-18 Steel World Comments Off on Talking about the Broken Wire Condition and Measures of Slow-Walking Wire Cutting

Nowadays, as the advantages of slow-moving wire over fast-moving wire are gradually discovered and recognized, slow-moving wire cutting machines are widely used when processing high-precision parts. W...

2021-10-18 Steel World Comments Off on Method for reducing non-metallic inclusions in continuous casting slab

There are non-metallic inclusions in the steel. It will destroy the continuity and compactness of the steel, which is very harmful to the performance of the steel. In order to improve the quality of s...

2021-10-18 Steel World Comments Off on What is 4Cr5MoSiV steel? What are the application areas of 4Cr5MoSiV steel?

Material name: Alloy tool steel Brand: 4Cr5MoSiV standard: GB/T 1299-1985　　 4Cr5MoSiV steel is air quench hardening hot work die steel, which is the H11 steel imported from the United States. Its perf...

2021-10-18 Steel World Comments Off on U.S. HI pump system material website began to be put into use

eported  It is a new beginning in the field of American education. The main purpose of Pump Systems Matter (PSM) is to reduce the energy demand in the northern United States and increase the bottom li...

2021-10-18 Steel World Comments Off on The defining characteristics and basic principles of water source heat pump technology

Abstract: This article first introduces the concept and working principle of water source heat pump technology, and compares it with boilers and air source heat pumps in terms of energy utilization, a...

2021-10-18 Steel World Comments Off on What is ASP60 steel? What are the applications of ASP60 steel?

%: C: 2.03 Si: 4.0 Mn: 7.0 Cr: 6.5 Mo: 10.5 V: 6.5　　 Good grinding performance Good heat treatment dimensional stability good toughness Very good red hardness Very good wear resistance　　ASP60 steel is...

2021-10-18 Steel World Comments Off on National Plastics Quality Supervision and Inspection Center: PVC pipes belittle quality, which is equivalent to self-breaking

In the first quarter of this year, the State Administration of Quality Supervision, Inspection and Quarantine deployed and the National Plastic Products Quality Supervision and Inspection Center (Beij...

2021-10-18 Steel World Comments Off on Causes of bending when steel is cooled

Some of the cross-sectional shapes of steel are symmetrical, such as I-beams, and some are asymmetrical, such as steel rails and channel steel. Generally, the symmetrical section steel is not easy to ...

2021-10-18 Steel World Comments Off on Selection of water supply pipeline and its connection method

Foreword In the water supply project, the modern water treatment plant takes water from the water source, settles and filters it into the clean pool, and then pumps it to the urban pipe network to rea...

2021-10-18 Steel World Comments Off on What is M238 steel? What are the applications of M238 steel?

C Carbon Cr Chromium W Tungsten Mn Manganese Si Silicon V Vanadium 0.95 0.5 0.5 1.1 0.3 0.1　　M238 factory specifications: hardened and tempered to 980-1080N/mm² (30-34HRC). M238 steel charact...

2021-10-18 Steel World Comments Off on Machining Skills of Fluid Dynamic Pressure Groove on End Face of Mechanical Seal Ring

1 Introduction When the contact mechanical seal is in operation, the contact surface of the moving ring and the static ring should be friction and heat. For high PV value systems, the friction heat wi...

2021-10-18 Steel World Comments Off on Application of water source heat pump in civil air defense engineering

Abstract: This article focuses on analyzing the technical obstacles of the cooling tower water source heat pump air conditioning system, and through engineering examples, demonstrates the feasibility ...

2021-10-18 Steel World Comments Off on Control the position of the oxygen lance

In the entire steelmaking process, the position of the oxygen lance is a very important parameter, which is directly related to the occurrence of decarburization, slagging, heating and splashing in th...