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introduction： The appearance of the cold partition is characterized by irregular and obvious sinking lines on the surface of the workpiece(There are penetrating and non-penetrating types)，The shape is small and narrow，There is a tendency to develop under the action of external forces。 Its formation reason： l)Multi-ladle multi-point pouring at the same time，Butt the two metal streams，But it is not fully fused and there is no inclusion in it，The bond between the two layers of metal is weak； 2)Multi-ladle sequential pouring，The interruption time between the front and back packets is too long； 3)Low mold temperature。 Improvement measure： 1)Raise mold temperature appropriately
2014-12-30 Reading quantity 2768
introduction：Thermal spraying is a surface strengthening technique，It has always been a key promotion of new technology projects in our country。It uses electric arc、Plasma arc、A heat source in the form of gas and oxygen，Heat a metal or nonmetallic material to a molten or semi-molten state，Under the action of high-speed air flow, it is atomized into fine droplets or high-temperature particles，It is sprayed onto the surface of the treated workpiece at a high flight speed，Form a firm covering layer，So that the workpiece surface to obtain different hardness、wear-resistant、rotproofness、heat-resisting、antioxidant、Thermal insulation、insulation、conduction、seal、disinfection、Protection against microwave radiation and other special physical and chemical properties。It can be repaired during equipment maintenance
2014-12-30 Reading quantity 2774
introduction：The production process refers to raw materials（Or semi-finished product）The whole process of making the product。For machine production, this includes the transportation and preservation of raw materials，Preparation for production，Manufacture of blank，Machining and heat treatment of parts，Assembly of products、And debug，Things like paint and packaging。The content of the production process is very extensive，Modern enterprises use the principles and methods of system engineering to organize and guide production，Think of the production process as a production system with inputs and outputs。It can make the management of enterprises scientific，Make enterprises more resilient and competitive。 In the production process，Direct change of raw material（Or blank）shape、Size and performance
2014-12-30 Reading quantity 1420
introduction：By and large，Any part of the thermoplastic elastic system can be welded。however，It is not clear yet，What happens inside the weld of a thermoplastic elastomer。This isIK2Systematic research is carried out in the research topic。 Thermoplastic elastomer(TPE)，It has the advantages of both thermoplastics and elastomers，But its still a very immature material component。On the one hand, it can be processed like a thermoplastic；On the other hand，Over a certain temperature range，Finished product with thermoplastic elastic system，It has the characteristic of elastomer，But its not the same with elastomers，Waste or production residues can be reused，moreover
2014-12-30 Reading quantity 2761
introduction：A hydraulic control valve with a certain functional relationship between output and input and can respond quickly﹐It is an important component of hydraulic servo system。Hydraulic servo valve according to the structure is divided into slide valve type﹑Nozzle baffle﹑Fluidic tube type﹑Jet plate and plate, etc﹔According to the input signal can be divided into hydraulic servo valve﹑Electro-hydraulic servo valve and pneumatic servo valve。Hydraulic servo valve is a small power of the mechanical action into a hydraulic output(Flow or pressure)The machine liquid conversion element。Hydraulic servo valve is mostly slide valve structure﹐In the ships steering gear﹑Copying device for machine tools﹑It was first used on aircraft boosters。The electro-hydraulic servo valve is an electro-hydraulic that converts electricity into hydraulic output
2014-12-30 Reading quantity 2776
introduction： 1.Manual oil feeding device An oil hole directed by an operator to a lubricating point using an oil can or oil gun，Oil nozzle and oil cup oiling is called manual lubrication，Mainly used for low speed、Sliding surface for light load and intermittent operation、Open gear、Chains and other individual friction pairs。The amount of fuel is controlled by the workers sense and experience。 2.Drip lubrication Drip lubrication mainly uses the oil cup to supply oil to the lubrication point。Commonly used oil cups are：Needle valve filling cup、Pressure action dripping oil cup, etc。The oil cup is made of light metal such as aluminum or aluminum alloy，The inspection holes in the cup walls are made of transparent plastic or glass，To see the oil inside
2014-12-30 Reading quantity 1427
introduction：KOYOBearing vibrates against bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]The damage is very sensitive。exfoliation、impression、corrosion、crack、Wear and tear will be reflected in the vibration measurement of the bearing，therefore，After using a special bearing vibration gauge(Frequency profiler, etc)The vibration can be measured，Through the frequency can not be divided
2014-12-30 Reading quantity 1429
introduction： Using gases or exhaust gases from the production process﹑Effluent liquor﹐And certain power machinery exhaust heat to produce steam or hot water boiler。Waste heat boiler is an important energy-saving equipment。The exhaust temperature of various smelting furnaces and roasting kilns is650～1250℃﹔The exhaust temperature of power machinery such as gas turbines and diesel engines is370～540℃。A waste heat boiler is installed to absorb some of the heat from these exhaust fumes﹐The energy efficiency of the whole system can be significantly improved。For example, after the waste heat boiler is installed in the steel rolling heating furnace﹐System-wide heat efficiency can even be improved 1About times。In the cracking process of chemical production﹐To avoid high temperature cracking gas
2014-12-30 Reading quantity 2779
introduction：1 before said from20century90post-mid-decade，Many cotton spinning enterprises began to pay attention to the comber investment，To continuously increase the proportion of combed yarn。In this process of development，As a professional comber manufacturer feel，The invisible hand of the market controls the development of the product，At the same time also absorb the nutrition of product development。 2 Combing machine selection basis The development of each product always revolves around the development and progress of the spinning process。In recent years，The comber market has gradually formed a common type、Medium-speed type、High speed three type combing machine。2 Combing machine selection basis
2014-12-30 Reading quantity 2772
introduction： one、KOYOWhether the outer packaging of the bearing is clear： In general，The factory brandKOYOBearings have their own special designers for external packaging design，And arrange the production of factories with satisfactory production conditions，Therefore, the packaging is very clear from lines to color blocks，In no uncertain terms,Some brands also have unique designs on the packaging of accessories specifically designed to protect their intellectual property rights。 two、KOYOWhether the steel stamp on the bearing is clear： inKOYObearing[bearing:bearing（“Be
2014-12-30 Reading quantity 1430
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