Reasons for corrosion of slag splash adhesion layer

2021-10-18 Steel World Comments Off on Reasons for corrosion of slag splash adhesion layer

Experimental studies have shown that the resistance to melting loss of the slag splash layer is related to the TFe content in the slag splash layer. The higher the TFe content, the easier the slag spl...

Molten steel refining process

2021-10-18 Steel World Comments Off on Molten steel refining process

Patent No.: 98125048.3 Patentee: Baoshan Iron and Steel (Group) Company Technical Abstract: The present invention discloses a molten steel refining process, which belongs to the treatment method of mo...

GB T12241-2005 safety valve general conditions

2021-10-18 Steel World Comments Off on GB T12241-2005 safety valve general conditions

1 Scope This standard specifies the terminology, design and performance requirements, testing, displacement determination, equivalent displacement calculation, marking and lead sealing, quality assura...

Maintenance of mechanical seals for pumps

2021-10-18 Steel World Comments Off on Maintenance of mechanical seals for pumps

    There are many types of mechanical seals for maintenance pumps with mechanical seals, with different models, but there are mainly five leakage points: (l) the seal between the shaft sleeve and the...

What is S50C steel? What are the applications of S50C steel?

2021-10-18 Steel World Comments Off on What is S50C steel? What are the applications of S50C steel?

Through the implementation of spheroidizing treatment, the cutting performance of this type of carbon steel can be improved. The steel is usually used after tempering to a hardness of 19~22HRC to incr...

What is SKH9 steel? What are the applications of SKH9 steel?

2021-10-18 Steel World Comments Off on What is SKH9 steel? What are the applications of SKH9 steel?

(%): Carbon: 0.8-0.9  Forging: 1.100~900℃ Annealing: Heat to 800-850°C, stay at this temperature for two to four hours, and let it cool down in the furnace. Quenching: first preheat to 550-600°C, then...

What are the two variables of hydraulic pump monitoring

2021-10-18 Steel World Comments Off on What are the two variables of hydraulic pump monitoring

1 Current situation  After the reform and opening up, with the vigorous development of China’s economic construction, the valve industry has also shown a thriving vitality. Now there are thousa...

Defects and Prevention of Lost Foam Casting-Sand Sticking

2021-10-18 Steel World Comments Off on Defects and Prevention of Lost Foam Casting-Sand Sticking

The molten metal penetrates into the sand mold to form a mechanical mixture of metal and sand. There are two situations: one is that the molten metal penetrates into the molding sand through the crack...

What is FDAC steel? What are the applications of FDAC steel?

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

Carbon (C) 0.33~0.42 Manganese (Mn) 0.55~0.75 Alum (V) 0.30~0.80 Silicon (Si) 0.80~1.20 Chromium (Cr) 4.80~5.50 Molybdenum (M0) 1.20~1.60 Phosphorus (P) ≤0.030 Sulfur ( S) 0.10~0.151. The hardness is ...

Insulation and soaking method

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The steel ingot heating method uses the latent heat of the liquid core and its heat recovery effect to make the surface and the inside temperature of the steel ingot uniform. The specific steps are: a...

Compound extrusion

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Compound extrusion (compound extrusion) is an extrusion method in which metal flows in two opposite directions simultaneously in the space between the extrusion rod and the extrusion barrel and the ex...

Measures to be taken to improve the purity of steel

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The purity of molten steel mainly refers to the gas content and the number, shape and distribution of inclusions in the steel. Only pure molten steel has good castability, can guarantee the quality of...

Rebar production process and application fields

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First, the production process of steel   rebar steel surface is ribbed, also called ribbed steel bar, usually with two longitudinal ribs and transverse ribs uniformly distributed along the longitudina...

What is DF2 steel? What are the applications of DF2 steel?

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(%): Carbon chromium molybdenum manganese nickel tungsten vanadium silicon aluminum C Cr Mn Ni WV Al0.95 0.6 1.2 0.6 0.11 4. After hardening and tempering, the high surface hardness and the good match...

Subcutaneous bubbles of continuous casting billet

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Below the surface of the cast slab, there are large bubbles growing toward the columnar crystals with a diameter and a length of 1 mm and 10 mm or more. These bubbles are called surface bubbles that a...

What is 304 stainless steel

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A universal stainless steel, it is widely used to make equipment and parts that require good comprehensive performance (corrosion resistance and formability). It can withstand general rust in the buil...

How did “iron” transform into “steel”?

2021-10-18 Steel World Comments Off on How did “iron” transform into “steel”?

Steelmaking begins with ironmaking. Steel comes from pig iron. Pig iron smelted from iron ore has a high carbon content and contains many impurities (such as silicon, manganese, phosphorus, sulfur, et...

Features of roll cross wedge rolling mill

2021-10-18 Steel World Comments Off on Features of roll cross wedge rolling mill

The roll cross wedge rolling mill is the most widely used of the three types of rolling mills: its main advantages are as follows: (1) High productivity, generally 6~25 (pairs)/min. (2) Equipped with ...