矿物冶金-6

 A gabion is essentially a heavy-duty wire mesh. It is a steel mesh (also known as a grid) that is treated to withstand the more demanding pressures from its contents and elements. At one time, gabions were made of lightweight wicker. It wasn't perfect, but it was innovative and effective. Today, gabions are made of tougher materials, giving them greater strength and longevity.   How do you build a  gabion fence ?   Step 1 - Laying out the site Begin by laying out the wall using a string and line level or a carpenter's level mounted on a long straight edge (usually 2 "x4" - 12' long) and check that the mat is level in both directions.   Step 2 - Provide a firm and level foundation Use a hoe or flat shovel to remove any grass, weeds or topsoil. If the soil is hard, you can place the gabion wall directly on top of the existing soil. If you have sandy or clayey soil, you will need to replace it with compacted gravel or concrete footings about 6 inches deep, otherwise

Tropinone  is a tropane alkaloid, usually in needle-like crystals (gasoline), used as an intermediate in the synthesis of atropine sulfate. It is an alkaloid molecule worth mentioning in the history of organic synthesis. Use tropinone to react with dimethyl carbonate in the presence of alkali to generate 2-methoxycarbonyl tropinone, and then hydrogenate the product in the presence of Raney nickel to generate methylecgonine, and finally methylecgonine is combined with Cocaine can be obtained by esterification of benzoyl chloride in the presence of pyridine. The synthetic method of Tropinone Wierstedt (1915 Nobel Laureate in Chemistry) used cycloheptanone as the starting material. Although the yield of each step in the route was high, the total yield was greatly reduced due to the number of steps, only 0.75%. . Of course, it was a great contribution to the development of synthetic organic chemistry to be able to synthesize such complex compounds artificially in the early 20th century. Th

Some people say, isn't a  gabion mesh box  made of hexagonal metal mesh? This is only one part of it. There is a gabion box made of hexagonal metal mesh.  Beginning Wire Mesh Manufacturer  will first introduce what hexagonal wire mesh is, and then what gabion box is. Hexagonal metal mesh is made of high quality metal wire. It is said to be metal wire because it is divided into many kinds, such as high carbon steel wire, low carbon steel wire, iron wire, galvanized wire, cold galvanized wire, dipped plastic wire, PVC wire, etc.     Hexagonal wire mesh, as the name implies, is a  Hexagonal Wire Mesh . It is divided into three types: hexagonal and pentagonal spiral hexagonal twisted wire mesh. Hexagonal wire mesh can be further processed into gabion mesh and also used as hanging mesh for girding hillsides. They are used for chicken raising, duck raising, goose raising, rabbit raising and zoo fencing, machinery and equipment protection, highway fencing, stadium purse seine, and street

  We manufacture products by melting pig iron and pouring molten metal into molds. We design cast iron furniture to your customer's specifications, adding a new look to your outdoor furniture. We offer a variety of powder-coated finishes for our furniture, combined with rust-resistant aluminum for wrought-iron strength and reliability. Our furniture is known for its durability and strength. We offer a wide range of cast iron furniture, including chairs, tables and benches. Our furniture is highly appreciated by our clients for its superior quality and the most affordable prices. Offering free casting solutions  - Reply within 24 hours and soonest within 10 minutes. We have a group of team members who are very proficient in this field and they know what type of furniture our customers are particularly demanding. Our experts put their choice first to bring a unique collection of iron furniture to our customers.  As a result, we are known as one of the  leading manufacturers and suppl

  The  Stainless Steel Cable Mesh   is a combination of softness and rigidity. The metal wire mesh can be widely used in the decoration industry to create any effect that the designer dreams of. Stainless Steel Cable Mesh is a decorative metal net. flexible stainless steel cable mesh   product features 1. Fireproof: Unlike cloth, this kind of mesh is not flammable. high strength 2. Easy to clean: When the metal cloth is dirty, you only need to wipe it with a rag. Highly functional 3. Easy and quick installation, chic and elegant appearance 4. The product is durable, gorgeous and high-end, reflecting unlimited creativity and artistic beauty. 5. To be welcomed and excited by architects and designers all over the world. 6. Various openings and sizes; 7. Unique design and appearance; architectural inspiration, aesthetic enjoyment. BZ  Stainless steel cable  mesh   products are widely used in indoor and outdoor decoration. Such as hotels, high-rise buildings, elevators, luxury office buildi

Electro galvanized wire Electro galvanised wire  (cold galvanized wire) is made by means of wire drawing followed by heat treatment and electro galvanizing.     The galvanizing is made with mild steel or carbon steel wire in the plating bath, through the electric current unipolarity making zinc plating gradually on the surface. The galvanizing speed is slow to ensure a uniform coating, with thin thickness, usually only 3 to 15 microns. The outward appearance of electro galvanised steel wire is bright, the corrosion resistance is poor, the wire will get rust in a few months. Relatively the cost of electro galvanizing is low than hot dip galvanizing.   The following is electro galvanized wire process: Steel rod coil →Wire Drawing → Wire Annealing → Rust Removing → Acid Washing →Boiling → Zinc Feeding → Drying → Wire Coiling   Wire diameter: BWG8# to BWG16#. Materials: Carbon steel wire, mild steel wire. Size range: 0.40mm-4.5mm Weight of Zinc coating: 20 g/m2- 70 g/m2   Applications:  El

  Design Expectations of a PCB for Medical Devices To design a circuit board for use in medical equipment requires following PCB design best practices to produce the highest quality. These practices include: ● Selecting the highest quality parts. ● Attention to detail during circuit development to create a schematic that is logical to follow. ● Using circuit simulation and PCB analysis tools to ensure function and cut back on PCB prototyping. ● Careful component placement and trace routing during PCB layout to create a board that can be manufactured without errors.   Medical equipment also has to operate flawlessly, whether used in the field, operating room, or analyzing test results in a lab. Doctors, nurses, and technicians don’t have time to deal with equipment that works intermittently or not at all. Additionally, the equipment must be robust enough to work in various environments, including chemicals, fluctuating temperatures, and fluids. Another aspect of the equipment is that it

What is color coated steel? An important innovation in steel in construction is ‘ Colour Coated Steel .’ The increasing urbanisation is causing the building and construction sector to boom. This trend is giving rise to many new residential, commercial, and industrial infrastructure projects. Consequently, the architectural world is continuously researching and looking for innovations in building materials and processes. Colour-coated steel is one such innovation that is gaining a lot of momentum. With time, colour-coated steel has become a crucial material used in the building and construction sector, wherein, it is used majorly for industrial roofing and cladding, cold storage and warehouses, airports, atriums in malls, showrooms, false ceilings, lighting fixtures etc. Also known as pre-painted steel, the manufacturing process of colour coated steel involves applying a decorative coating (liquid paint) to a coiled steel form. This paint coating protects the steel from atmospheric corr