Sleeve for DIN7991 Hex Socket Cap Bolts Screw A4-70 A4-80

Beyond Screw has been in the industry since 2004, offering a comprehensive range of processing equipment and production lines. We incorporate advanced manufacturing technology from Taiwan and are equipped with state-of-the-art machinery and a team of skilled professionals. With many years of experience, we provide high-quality products and exceptional service to meet the needs of our customers.
Our professional manufacturing capabilities include self-drilling screws, self-tapping screws, special screws, machine screws, and various hardware products. Whether you're an industrial manufacturer, OEM, wholesale distributor, contractor, or retailer, we understand your requirements and have the capability to consistently deliver quality solutions. Feel free to contact us for samples, drawings, or orders.
Beyond Industry Group mainly produces screws and bolts. Please note that the materials here include: Stainless steel bolts: A common choice for hex screws due to their corrosion resistance without needing any coating. Carbon steel bolts: The most commonly used hex head bolts are zinc-plated to enhance corrosion resistance. Alloy steel bolts: These hex bolts are designed to withstand high pressure and are typically coated with cadmium or zinc plating to protect against corrosion. Hex socket cap screws are available with standard or full threading depending on the bolt length. They are suitable for use in exterior, automotive, marine, coastal, and high-temperature environments. No matter what type of hex socket cap screw you need, Bolt Products has it. Feel free to contact us. There are always DIN912 and DIN7984 standards for hex socket cap screws, but we can also produce according to your samples or drawings. We look forward to your inquiry or order.

Dust Free Molybdenum Containing Iron Sulfide Series For Resin Grinding Wheels

Pyrite as Fillers Used in Grinding Wheels/ Abrasive Tools

Ablation grinding wheel / abrasive( filling agent )

PYRITE__As fillers used in grinding wheels/ abrasive tools

Place of Origin: Henan Luoyang, China

Pyrite, Iron Pyrites, pyrites lump, Ferro sulphur, Pyrites powder.

Product Description

Detailed introduction: s filling agent for ablating grinding wheel abrasive, which can effectively reduce the grinding wheel temperature during ablation, improve the heat resistance, and prolong the service life of the grinding wheel.

Formation of a protective layer
(1)The reaction absorbing oxygen occurs between 400 and 475 degrees, thereby reducing the oxidation of resin, reducing the oxidation burn of workpieces, and prolonging the working life of grinding wheels at high temperature.

4 FeS2 + 11 O2→2 Fe2O3 + 8 SO2
(2) 4 FeS + 7 O2→4 Fe2O3 + 4 SO2

400-475 degrees is a limit that the grinding wheel can easily reach. The above reaction creates an oxygen-free and hypoxic environment for the grinding wheel at the micro level, thereby improving the high-temperature performance of the grinding wheel.
Decomposition reaction occurs at 650-degree heat absorption, thereby reducing the working temperature of the grinding wheels.

FeS2→FeS + S
(3) It enters the melting state at about 1100 degrees, which becomes a good lubricant to protect the grinding wheel FeS(s)→FeS(l).

(4)Sulfur, sulfur dioxide and sulfur trioxide react with the workpiece surface to form FexSy:

Quality:

S: 48%min, FE: 42%min, SIO2: 3.0%max, PB: 0.1%max,

ZN: 0.1%max, AS: 0.1%max, . C: 0.3%max, CU: 0.2%max,

H20: 1.0%max, SIZE: 95%min

Granularity: (0-3)mm/(3-8)mm/(3-15)mm/(15-50)mm or other particle size.

Packing: 25KG/500KG/1000KG/BAG or 1000KG/BAG or other packaging.

Note: if there are special requirements, the product can be customized according to clients` requirements.

(In addition, our company is specialized in the production of `Hengkai Metallurgical" Brand - ferro sulphur series for foundry, copper removal agent series for lead smelting, debismuthizing agent for lead smelting, iron sulphide series for resin grinding wheel abrasive industry, iron sulphide series for brake pad friction industry, iron sulphide series for heavy metal wastewater treatment, iron disulphide series for soil improvement, iron disulphide for lithium battery anode, alloy sand series for wear-resisting flooring industry, ferrous sulphide powder series for ferrous sulphide cored wire, ferrous sulphide for ferrous sulphide cored wire, iron sulphide for resin grinding wheel, ferrous sulphide powder for heavy metal wastewater treatment, ferrous sulphide powder for soil improvement, ferrous sulphide cored wire, pyrite, ferrous sulphide ore, molybdenum oxide, high purity molybdenum trioxide, ammonium molybdate, titanium dioxide, cryolite powder, mullite, etc.)

Export Dust-free Iron Sulfide S36,Customizable Molybdenum Containing Iron Sulfide,Premium Molybdenum Containing Iron Sulfide S36

LUANCHUAN COUNTY HENGKAI METALLURGICAL MATERIALS SALES CO.,LTD , https://www.pyritechina.com