Solar Photovoltaic Industry-Industry Application-Luoyang Mengchang Metal Materials Co., Ltd.

Solar Photovoltaic Industry

Tungsten and Molybdenum Modules for Solar Photovoltaic Industry

Monocrystalline silicon, a large number of raw materials required by the semiconductor and photovoltaic industries, is prepared and produced by the special equipment "monocrystalline silicon crystal growth furnace". Increasing the capacity of monocrystalline silicon and reducing the production cost of monocrystalline silicon have long been the technical topics that crystal manufacturers have to solve through equipment improvement and optimization. Increasing the crystal drawing speed is one of the important means to effectively improve the production efficiency and control the production cost.

In recent years, crystal manufacturers at home and abroad have added a layer of molybdenum draft tube (also called draft tube molybdenum bushing) in the graphite draft tube. The application of this technology and product not only isolates the direct radiation of graphite and crystal rods, effectively control the temperature of the ingot, and further improve the pulling speed. At present, all kinds of furnace-type molybdenum draft tubes for the production of single crystal silicon draft tubes. And the flat draft tube and wave linear draft plate selected in the crystal pulling market can only solve the problem of preventing light and heat radiation. The temperature center of the ingot is too high, which seriously affects the crystal pulling speed problem, and at the same time, the lifespan is also low, resulting in high manufacturing cost of single crystal silicon.

Tungsten wire rope Molybdenum draft tube Molybdenum heat shield Molybdenum heavy hammer Molybdenum flow port Molybdenum seed crystal chuck Molybdenum hook Molybdenum wire

Craftsmanship

Raw Material

Starting from raw materials, we select high-quality raw materials, which is very prominent in the stability and consistency of products. Identify different brands of raw materials and mark the batch number. And each batch of raw materials shall be sampled, inspected and archived. Ensure the traceability of each finished product and continuously improve the product quality.

Milling

The control of the milling process of Mengchang Metal products is very accurate, with several large mixers and vibration platforms to ensure that the materials in the pulverizing and mixing process can be fully stirred and evenly distributed, so as to ensure the internal organization consistency of the products.

Suppress

In the process of powder compacting, the powder is pressed by isostatic pressing equipment to make its internal structure uniform and dense. Mengchang has very perfect batch mold, and also has isostatic pressing equipment to meet the production of ultra-large batches of products.

Sinter

In powder metallurgy, after the metal powder is formed by isostatic pressing, it is heated at a temperature lower than the melting point of the main components to make the particles connect, so as to improve the performance of the products, which is called sintering. After the powder is formed, the dense body obtained by sintering is a kind of polycrystalline material. The sintering process directly affects the grain size, pore size and grain boundary shape and distribution in the microstructure, which is the core process of powder metallurgy.

Forging

The forging process can make the material obtain higher density, better mechanical properties, and play a role in strengthening the surface. Accurate control of the processing rate and forging temperature of tungsten and molybdenum materials is an important factor for the superior performance of Mengchang tungsten and molybdenum materials. A processing method of using a forging machine to apply pressure to a metal blank to plastically deform it to obtain a forging with certain mechanical properties, certain shape and size.

Rolling

The rolling process makes the metal material produce continuous plastic deformation under the pressure of the rotating roll, and obtain the required section shape and properties. With advanced tungsten and molybdenum cold and hot rolling technology and equipment, from tungsten and molybdenum metal blank to the production of tungsten and molybdenum foil, mengchang guarantees you more advanced production technology and superior metal properties.

Heat-Treat

After the forging and rolling process, the material is subjected to the heat treatment process to completely eliminate the internal structural stress of the material, give play to the material performance, and make the material easier for subsequent machining. Mengchang has dozens of vacuum furnaces and heat treatment hydrogen furnaces to meet the rapid delivery of mass production orders.

Machining

The material of Mengchanghas undergone complete heat treatment, and then processed into various customized sizes by machining equipment such as turning, milling, cutting, grinding, etc., and ensures that the internal organization of tungsten and molybdenum materials is tight, stress-free and hole-free, which can meet the needs of customers.

Quality Assurance

Quality inspection and control will be carried out from raw materialsand for each steps of the production , so as to continuously ensure the quality every product. At the same time, when finished products are delivered from the warehouse, the appearance, size and internal organization of materials are tested one by one. Therefore, the stability and consistency of products are especially prominent.