Industry News
- These you all know that in the forging processTend to exist some shortcomings in the forging process, the following will summarize some for you.1. The large grain sizeLarge grain size is usually caused by a lack of forging temperature and deformation degree, or finish forging temperature is too high, or caused deformation degree fell into the critical deformation zone.Aluminum alloy deformation degree is too big, form texture;High temperature alloys deformation temperature is too low, the formation of deformation mixed can also cause bulky grain, coarse grains will reduce the plasticity and toughness of forgings, fatigue performance significantly decreased.2. Uneven grainUneven grain size refers to the special thick grain forging parts, some parts are small.Produce uneven grain is the main reason of the billet throughout the deformation uneven grain crushing degree is differ, or local deformation degree fell into the critical deformation zone, or high temperature alloy local work hardening, or quenching heating local coarse grainsIndustry News September 18, 2016
- Magnetic separator how to choose the thickness uniformity of the materialMagnetic separator is more and more popular in the mineral processing, with the emergence of more magnetic separation equipment, magnetic separation machine manufacturer's competitiveness is becoming more and more big, henan hongxing mining machinery co., LTD., according to the actual needs of customers, specially designed for the magnetic separator system parts with the same price to build higher yield, economic and practical machinery.My company based on magnetic separation of finished products, how to make magnetic separation issued a uniform thickness of the material, today we in dry magnetic separation machine for example to give customers make a further explanation:1, adjust the gap between the magnetic roller and platePoints plate with magnetic roller spacing is an important parameter in the primary technology, material baffle spacing is smaller, lean magnetite piece is not good, reduces the utilization of mineral resources;Points is the baffle spacing, the greater the gangue miIndustry News September 14, 2016
- Precision forging technology of auto partsPrecision forging technology with high efficiency, low cost, low energy consumption, the advantages of high quality, get more and more widely used in auto parts production.According to the deformation of the metal plastic forming temperature is different, the precision cold forging forming can be divided into cold forging forming, forming temperature, hot forging, hot forging forming, etc.Concrete is:1, the cold forging formingGeneral forming at room temperature, cold forging forgings with high mechanical properties, good surface quality and dimension precision higher advantages, but cold forging deformation resistance is big, the low plasticity, illiquid materials, especially high mechanical strength, is sensitive to cold work hardening material forming difficulties.Has been widely used abroad cold precision forging technology production of low carbon steel, medium carbon steel and low alloy steel parts, by a few grams of weight to more than ten kilograms.Japan and Germany on a car usIndustry News September 14, 2016
- Forging blank mould partsBy forging can make material organization close, carbide distribution and flow distribution is reasonable, to improve the performance and heat treatment increases the service life of dies.Casting mould parts are generally after forging processing and forming of the blank, is the purpose of the forging can get certain geometry, to save raw materials and save the processing time, reduce the cost.In the face of the mold of main work parts, especially in the heat treatment quality is higher, longer service life of parts, such as convex and concave die of punching die, forging die, plastic mould, die-casting mould cavity, in addition to the requirements to get a certain geometry, save raw materials and reduce processing time, mainly through forging to improve the performance of raw materials as the main goal.Especially in the main working parts, mould parts, therefore, have to pass before processing forging processing, mold can be long time to serve the public.Industry News September 12, 2016
- How to suppress is turbine fixed ball valve standardsTurbine fixed ball valve in some artificial environment shell test and seal test process is as follows.Turbine fixed ball valve features: the double block and discharge using floating seat spring preload turbine can be fixed ball valve, when the valve is in full open and close, under the condition of two different fluid blocking by upstream and downstream side of the seat, and the discharge valve will have the effect of discharge valve body lumen stranded content.Turbine fixed ball valve automatic relief function: when the abnormal pressure is caused by the temperature rise of stop valve body cavity medium, only the seat function can realize automatic pressure release, and completely do not need through the relief valve for pressure relief, which, when conveying liquid medium security is greatly increased.Fire safety structure: follow API607 and API6FA specification requires that the design and manufacture of valves, must have the function of fire safety is set up.Turbine fixed ball seIndustry News September 07, 2016
- Fold line that sand mold casting what advantageSand casting is one of the casting, sand casting mold used generally made from a mix of sand mold and core.Because of sand mold casting molding materials used in the cheap, simple mould manufacturing, piece of casting production, the batch production and mass production are able to adapt to, for a long time, has been the basic technology of casting production.At present, internationally, in all casting production, 60 to 70% of the casting is made of sand mold production, and about 70% of them are using clay sand mold production.Sand mold casting of crusher wear parts at home and very common, like jaw, high chromium plate hammer, crushing wall, rolling mortar wall and so on, because in crusher equipment, as a larger wear resistant castings, relatively accuracy is not high, especially such as jaw, out of the finished product is almost no lathe polishing, crushing wall, roller rolling mortar wall, is just like casting parts need lathe polishing, so especially suitable for use sand mold caIndustry News September 07, 2016
- August expanding manufacturingCompared with last month, China's manufacturing economy expanding in August, the economy running smoothly.In the monitoring of the eight plates, the biggest gains is a steel plate, the second is energy;, drop the largest is the colored plates, followed by textiles.Business club commodity supply and demand index (BCI) is 0.26, are up 1.58%, reflecting the manufacturing economy is expanding last month, the month economy running smoothly.In August to analysis, Shanghai, wuhu, wuhan and other parts of the city housing boom, boosted the iron and steel, building materials market.In the second half of the manufacturing market is expected to top high low, after the overall slant.Commodity markets or in September will be extended gains, but colour will reduce, most likely is silver, nine in the fourth quarter of the market is not optimistic.Industry News September 06, 2016
- Machining of these hazards is on your side?A wide range of machinery manufacturing industry, including transport, machine tools, agricultural machinery, textile machinery, power machinery and precision instruments and other machinery manufacturing, generally speaking, there are casting, forging, heat treatment, machining, assembly and painting and so on, the occupational disease hazard is very significant.Mechanical processing is the use of all kinds of machine tools for metal parts for car, planing, drilling, grinding, milling, cold;General mechanical processing production process of occupational disease hazards are relatively small, mainly used in metal cutting cutting oil emulsion and the influence on workers, due to the high speed machine tool rotation, emulsion splash around, easy pollution skin, can cause folliculitis, acne, and so on.In the coarse grinding and fine grinding process and can produce large amounts of dust.1, industrial dust: the main existence and casting industry, the green sand preparation, modelling, shaIndustry News September 06, 2016
- For the maintenance of full welded ball valve do you understand?Standard if all welded ball valve under the condition of the uninsured raises a gender maintenance, once the leak, often is the damage is very serious, which not only increased the difficulty of repair, and often have even lose the possibility of repair and value.Therefore, for organization and management of complete valve repair work, not only should have corresponding consciousness of the people concerned, more importantly, prevention and maintenance measures, namely the regular inspection on the valve (for example, standard relative to the outside world all welded ball valve sealing, the valve in the closed state of closure, etc.).Preventive maintenance standard full welded ball valve is the key in the first time that the valve has a leak occurs, immediately to repair of the valve, because even in tiny circulation medium sealing surface under the condition of the damaged, can also cause the sealing surface area in a short time badly damaged, so that cause the expensive maintenance cIndustry News September 01, 2016
- Welding has so many requirementsWelding process is not simple techniques, the welding process has many demands, summarizes some for everybody below small make up.(1) welding procedure qualification should be based on reliable steel welding performance and welds before completion of the works.Welding parameters used in the welding procedure qualification, in principle is according to the weldability of the steel welding test result to determine, especially after the heat input, preheat temperature and hot temperature.For weldability have been fully understood, there is a clear guidance of welding process parameters, and has long use in practice production in domestic and foreign mature steel grade, generally do not need to mount the construction enterprise to carry on the weldability test.For: domestic development and production of new steel grade, or imported from abroad without used types of steel, should be provided by the steel weldability test assessment data.Otherwise the construction enterprises should collectIndustry News September 01, 2016