News information_Tonghai Yunshi Industry and Trade Co., Ltd.

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2024

03-12

There are seven factors that affect the sealing of the cylinder, mainly including cylinder wear, piston ring damage, piston wear, valve seat damage, valve guide wear, cylinder gasket damage, valve clearance and other problems.

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2024

03-12

Development History of Ductile Iron

According to modern archaeological research, a large number of cast iron-related relics and relics have been found at the back end bay cast iron site in Xinzheng Zheng Han's old city. The back end bay cast iron site is located in the southwest of Dongcheng District in Xinzheng Zheng Han's old city, covering an area of nearly 100000 square meters. The site is an official handicraft workshop for casting tools and farm tools in the capital of South Korea in the middle and late Warring States period. Decarbonization kiln was first discovered at the cast iron site in Tuiouwan, Henan Province, advancing the history of ductile iron in China by at least 200 years. It is at least 2000 years earlier than the West.

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2024

03-12

Building steel pipe scaffold fastener

Construction steel pipe scaffold fastener is an indispensable and important accessory on the construction site, which is used to connect and fix the steel pipe scaffold. Its precise length ensures the safety and stability of the project. Generally made of high-quality steel, with good compression and impact resistance. Fastener surface is smooth, galvanized anti-corrosion and anti-rust, prolong service life. Various specifications, suitable for steel pipes of different diameters, convenient installation, convenient disassembly, recyclable use, and effective cost saving. In the construction site, play a key role in ensuring the smooth progress of the project. Therefore, the selection of high-quality scaffolding fasteners is essential to ensure building safety.

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2024

03-12

Basic characteristics of gray iron castings

Clay content and silt content. High clay content of sand, with the specific pressure rise strength also increased, usually effective bentonite control in 7% to 10%. The sum of effective clay and dead clay in the molding sand is equivalent to the silt content, which is generally controlled at 12% ~ 16%. The mud content is too high or too low will affect the performance indicators of the sand.

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Basic characteristics of gray iron castings

2024

03-12

Causes of brittle fracture formation in gray iron castings

According to the analysis of relevant experts, the fracture process of gray iron castings is more complicated, but on the whole, it has to go through three stages of internal crack initiation, crack expansion and fracture. The fracture line without obvious plastic deformation belongs to brittle fracture. Under the action of normal stress, brittle fracture is the fracture formed by the separation of the material along the reasonably weakest crystallographic plane between atoms, also known as cleavage fracture.

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$Causes of brittle fracture formation in gray iron castings$

2024

03-12

Cast iron enamel pot daily maintenance

When using an enamel pot on a gas stove, do not let the flame overrun the bottom of the pot. Because the cast iron material of the pot body has a strong heat storage efficiency, the ideal cooking effect can be achieved without the need for fire. Fierce cooking is not only a waste of energy, resulting in excessive fume, but also on the outer wall of the pot enamel porcelain damage.

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2024

03-12

Cast iron enamel pot boiling steps

The inner wall of the black enamel new pot is still rough and jerky, which is not suitable for food with high starch content. It is best to make meat with more oil. After using for a period of time, the roughness of the black enamel pot will slowly disappear, becoming more and more lubricious, and becoming more and more non-sticky.

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2024

03-12

Pot Type-Cast Iron Enamel Pot

Enamel coated cast iron pot, referred to as enamel pot. Enamel is also called enamel porcelain, which is an inorganic glass enamel coated on the surface of the metal substrate. Mainly composed of high-strength quartz and feldspar silicate minerals, without any side effects on the human body. Enamel enamel on the metal surface can prevent the metal from rusting, so that the metal will not form an oxide layer on the surface when heated, and can resist the erosion of various liquids, so in the process of using enamel pot to cook food, it will not produce harmful dissolved substances due to high temperature, and has good acid and alkali resistance and will not react with food.

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2024

03-12

Application field of wear-resistant steel ball

Wear-resistant steel balls are widely used in many fields. First of all, it has important applications in the mining industry for crushing and grinding of ore. Secondly, wear-resistant steel balls also play a key role in the cement industry, for grinding and mixing cement materials. In addition, it is also widely used in the power industry, especially in the coal mill of coal-fired power plants, where wear-resistant steel balls can effectively crush coal.

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Application field of wear-resistant steel ball

2024

03-12

What are the classification of wear resistant steel ball?

Forged steel ball main material: 45# steel, and 50mn and 60mn or 65mn, the current wear resistance and high chromium ball comparable to 75mncr material. Forged steel ball advantages: broken rate of less than 1%, good wear resistance, cheap, cost-effective.

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What are the classification of wear resistant steel ball?

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Tonghai Yunshi Industry and Trade Co., Ltd.

Now it has 2 excellent automatic casting production lines of Denmark Disha, with an annual production capacity of 50000 tons of various castings. The company's construction fasteners,

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