机械部件9

  Ball bearings are some of the most commonly used bearings in rotary movement applications. They comprise a row or multiple rows of balls between inner and outer raceways. This design capitalizes on the concept that rolling elements produce less friction than sliding elements. One ring is normally attached to the rotating assembly, or shaft, and as it rotates the balls roll around the inner raceway, while the other ring remains stationary. This allows for rotational movement with an extremely low friction coefficient, making it great for applications with high speeds and low friction requirements. Bearings typically need to handle two types of loads: thrust loads and radial loads. Thrust loads, also called axial loads, are forces acting parallel to the bearing axis, while radial loads act perpendicular to the bearing axis.  Ball bearings   can withstand both thrust and radial loads. However, they have a relatively low load capacity, so they are typically used in applications with ligh

  In recent years,  DC air conditioners  have become increasingly popular due to their many advantages over conventional air conditioners. Since the compressor consumes the most power of any air conditioning system, changes in compressor technology have made it possible to deploy better and more efficient air conditioners or heat pumps. AC Induction Motors In a three-phase AC induction motor, the windings of the motor stator are designed to produce a rotating magnetic field when a three-phase AC voltage is applied to the windings. The rotor usually has a winding embedded in an iron laminate. When power is applied to the windings, a magnetic field is generated in the rotor, causing it to react with the magnetic field in the stator. The rotating magnetic field of the stator pulls the rotor, which tries to keep up with the rotating field. The lag or slip is about a few percent. This design is one of the traditional ways to drive a three-phase motor in a compressor.   DC Brushless Motors I

How Do TIG Welders Work? If you are familiar with the oxy-acetylene torch, then you will have an easy ride with  TIG welding . During the welding process, you will use an electric torch to weld while feeding the filler rod into the molten puddle. The method also provides welders with the capability to soft start and stop, making the process different from other MIG or stick welding processes. The process also requires a welder to use an accelerator pedal to control the heat, especially while working on a bench. The heat can be controlled using fingertip remotes on the torch.   What’s the Difference Between MIG and TIG Welding? Understanding TIG welding involves breaking down the processes involved in MIG.  MIG welding  involves continually feeding a cord through a metal wire into the weld you are creating. The cord uses the metal supply to easily combine two metallic objects as the welder’s filler material. On the other hand, TIG uses inert tungsten gas to join the two metal objects to

  Non-woven wallpaper  has been a popular product on the wallpaper market since the 1990s. The compacted mixture of cellulose and polyester fibers provides very good dimensional stability and is highly resistant to mold and mildew growth.   Blends of cellulose and polyester fibers Blends of cellulose and polyester fibers, i.e. natural and synthetic fibers, are called "nonwoven materials". This revolutionary wallpaper material was introduced to the market in the early 1990s. Pulp or cellulose is obtained from chemically treated plant fibers. Polyester is a synthetic fiber that is very important in the textile industry.   Dimensional stability due to compaction In the production of nonwoven wallpapers, natural and synthetic fibers are compacted together with a binder, resulting in very good dimensional stability. The two types of fibers are fused together to form a tear-resistant, stable unit that is still breathable. The compaction process also ensures that individual lengths

  How to Design a Die Casting Mold Die casting  is a technique for mass-producing metal products and components, and die casting mold design is one of the most important steps in the process because the shape and attributes of the mold directly affect the final product. The die casting procedure forces molten metal into molds using high pressure and it requires a mold with exact specifications to achieve the task. The Importance of Die Casting Mold Design Mold design affects the shape, configuration, quality, and uniformity of a product created through the die casting procedure. Improper specifications can result in tool or material corrosion, as well as inferior product quality, while an effective design can improve efficiency and production time.   Factors Contributing to Quality Die Casting Mold Design There are a number of mold design factors to consider when deciding on the appropriate specifications for a project. Some of these factors include: ● Die draft ● Fillets ● Parting lin

Filter Bag  is a special device that extracts harmful or excessive quantities of substances from the air and cleans up polluted air. These Baghouse Filters are made from filter garments or needle-punched fabric and have a cylindrical or round shape. Efficacy, competitiveness, proficiency and ultimately longevity are the key advantages of best filter bags. Generally, after purification, the pollution in the outlet is only 10 mg / m3 while the air quality is 99.99%. In dust collection systems and suction systems, a filter to clean the compressed air is mounted and can be widely used in various industries production, including: Elimination of dirt and soil from transport companies, such as, in the cement industry; Dispensation of ferrous and non-metallic materials, let’s say, in the foundry;  Getting rid of the filth from the kettle settings, in biomass burning. So, how should you choose the best filter bags to cater to your demands? To make your hunt easy and stress-free, we have listed

  How do I know when my saw blade is blunt? It goes without saying that from the moment you start to use your tool accessory, it will start to wear. The longer you use it, the more it loses its edge, but at what point should you replace or resharpen it? If your  saw blade  starts to deteriorate during operation, there are four obvious signs you should be aware of:     • The saw blade starts to splinter or tear the wood. This often happens when cutting across the grain. As the blade exits the material, it can lift up small pieces, leaving a rough and unsatisfactory finish.    • The sound of the saw will change. You can often hear the sound of the saw’s motor labouring and you may also notice it getting warm. Any heat build-up in a motor will shorten it’s life. A trained ear can tell from the sound of the machine when the blade is getting blunt. • The cutting speed noticeably decreases. A sharp blade will cut much faster than a blunt one. The more the bladeBurnt Wood wears, the longer th

Machines employed for filling of liquids or powders into bottles are called bottle filling machines. The bottle   filling machines   are the important machine tools for the packaging process in various industries like pharmaceutical, chemical, agriculture, food etc. The manual methods of bottle filling cannot be applied in modern industries with bulk filling requirements as the process can consume considerable time and may causing spilling or wastage of the products. Consistency in filling of the bottles can also be yet another issue rising out of the manual bottle filling processes. Therefore the special devices called bottle filling machines are employed in industrial packaging processes.   Types of Bottle Filling Machine The bottle filling machine is available in different formats and specifications and therefore can be selected to suit diverse requirements of packaging and filling in various industries. Bottle filling machines are today available for meeting various requirements of