Industry News
- Forged titanium do you understand?Forging of titanium metal blank sheet (excluding) exerting force, make its produce plastic deformation, change the size, shape and improve performance, to manufacturing machinery parts, artifacts, tools or blank forming method.In addition, according to the slider movement way and slide block vertical and horizontal movement (used in slightness piece forging parts, lubrication, cooling and high-speed production forging) mode, compensating device can be used to increase the other direction of movement.This way is different, the forging force, process, material utilization ratio, yield, size tolerance and lubrication cooling way is different, these factors also affect the level of automation.According to the movement of blank, forging can be divided into free forging, upsetting and extrusion, die forging, closed die forging, closed upset.Closed die forging and closed upset because there is no flash, material utilization ratio is high.With a process or a few process can complete complex foIndustry News September 01, 2016
- The characteristics of exhaust directly buried all welded ball valveExhaust directly buried all welded ball valve main characteristics are as follows:1, end connection body end connection pipe (note: end connection size to a standard: ASTM, EN, KS/JIS, etc.)2, mirror polishing the entire stainless steel ball test3, bubble tight seal constitution and carbon reinforced PTFE (Teflon) the seats4, preloading cushion spring closely to ensure low leakage and reduce the valve operating torque5, according to the international standard against burst the valve stem6, two o-rings can ensure that the stem seal and replacement7, dry stem bearing with PTEF and metal coating automatic lubricating ability, don't need to add lubricant8, the valve stem and port connection pipeline extension can be designed according to customer requirements.Above is the exhaust vent directly buried all welded ball valve features, hope can help to you.Industry News August 31, 2016
- Resistance welding technology to save in the advantages and disadvantagesResistance welding has the following advantages:1) melt nuclear formed, always surrounded by a plastic ring, molten metal from the air, metallurgical process is simple.2) short heating time, heat concentration, so the heat affected zone is small, the deformation and stress are also small, usually don't have to arrange correction after welding and heat treatment process.3) don't need welding wire, welding rod, such as the filler metal, and oxygen, acetylene, argon welding materials, welding of low cost.4) simple operation, easy to realize mechanization and automation, improve the working conditions.5) high productivity, and no noise and harmful gas, in mass production, can make up to the assembly line with other manufacturing process.But flash butt welding with spark splash, need isolation.Resistance welding faults:1) there is a lack of reliable nondestructive testing method, welding quality only by destructive test of the specimen and artifacts to inspection process, and guaranteed byIndustry News August 31, 2016
- Forging of dangerous and harmful factorsIn forging production easy injury accident happened, according to its reason can be divided into three kinds:(1) mechanical damage.In the manufacturing process of forging, machinery and equipment, tools, or abnormal selection and use of workpiece, the illegal operation, etc., can lead to mechanical damage.Such as forging hammer hammer wounded;Fly forgings hurt;Auxiliary tool for flying wounded;Die, punch dozen fracture, damage to hurt;Raw material, forging, etc in the process of transportation cause of parts;Lever wounded, hammer rod fracture of the wounded, etc.(2) the fire explosion.Red blank, forging and splash scale once encounter flammable items, easy to cause fire and explosion accidents.(3) burning hot.Forging billet heating to 800 ~ 1 200 ℃, the operator once in contact with the red blank, forging and splash scale, etc., will surely get burnt.Heating furnace of occupational hazards and scorching artifacts radiation of heat energy, using a variety of fuel combustion flame furnacIndustry News August 31, 2016
- Parts processing and heat treatment have you seen?What kind of subsequent processing parts processing using deformation and heat treatment process control, manufacturing process of other protective antioxidants in how to solve this problem?Magnesium alloys can be divided into casting magnesium alloy, magnesium alloy machining and heat treatment deformation of magnesium alloy face a big problem, including aluminum alloy also has a lot of deformation, in order to eliminate deformation of my several methods.After aging treatment is the deformation and stress to the school, the school in the form of heat on the way to the school, when another kind of method is formed on the surface of the school form, I suggest that can try to use the shot peening processing methods, including shot peening processing formed in the shape of airplane wings.Peen forming - the advantage is: first of all introduces the compressive stress, material properties, especially the fatigue performance is good;The second thin-walled parts, especially magnesium alloy afIndustry News August 30, 2016
- Such precision forging you know?After forging, precision forging is refers to the parts only need a small amount of processing or processing is no longer meet the requirements of the parts dimension precision forming technology.Precision forging forming ways there are two main types: the elaboration blank, namely direct forging blank that could satisfy the requirement of precision machining.Precision forging, the whole parts or parts directly USES the precision forging process, thus reducing machine.Many currently used in production of precision forging process.According to the different forming temperature can be divided into hot forging, cold forging, warm forging, composite precision forging, etc.1, hot forging processHot forging is refers to the above the recrystallization temperature of precision forging technology of forging.Because of the high deformation temperature, in the forging deformation resistance of materials is low, good plasticity, so prone to forming complex geometry parts.2, cold precision forgingIndustry News August 30, 2016
- Stainless steel parts processing cutting tool would you use?Stainless steel parts processing on the tool surface roughness of cutting part for higher cutting part of the surface finish can reduce friction, the chip formation curl tool durability.Compared with the processing of ordinary carbon steel, stainless steel processing cutting dosage should be reduced to slow the tool wear;While selecting the appropriate cooling lubricants, in order to reduce the cutting heat and cutting force in the cutting process, extend the service life of cutting tools.Stainless steel processing when the demand for cutting tool geometric parameters, the general should be after former Angle, Angle of options to consider.When choosing anterior horn, want to consider volume crumbs slot type, presence of chamfering and blade Angle of dip Angle of the positive and negative factors such as the size.No matter what kind of cutting tools, processing must be used when stainless steel larger rake Angle.Shoulds not be too small to the Angle of choice, but also shoulds not be toIndustry News August 29, 2016
- Forging process of automobile axle shaft blankBelow small make up to introduce the introduction of the forging process of automobile axle shaft blank.1. Process improvementUnder the condition of the original process, due to the quenching temperature is low, a large amount of alloy carbides dissolved, so after quenching hardness is low, only 20 ~ 25 HRC, make through the secondary hardening tempering hardness reached more than 30 HRC, such mould toughness can be, but after work soon appear thermal fatigue, thermal wear serious, life is not high.Improvement process to improve the quenching temperature, the carbide alloy has a lot of dissolved, but formed during tempering diffuse distribution of hard phase in great quantities, cause mould although fatigue resistance increased, but the impact toughness is decreased, the mold after the use of more than 100 JianCi split into 3 pieces.The plan won't work.Again after improvement process, after fully preheat, interrupted quenching after high temperature insulation 0.5 h, after high temperaIndustry News August 29, 2016
- Mechanical processing and surface treatment of the original so many requirementsNow the machining process generally have requirement on surface treatment, some even more demanding.Machined part surface treatment, also is the important link in machining, the use of late because it is related to the job performance, is the assembly parts, may affect the assembly process.Different materials, choose the same surface treatment, processing and the effect is distinct.So, in order to meet the requirements of surface effect, the choice of raw materials is also very important.Such as cold rolled steel and hot rolled steel, adopt different surface treatment methods.Processing equipment is has a great influence on the surface of the machined part, advanced equipment and tool could achieve better results than expected.The factors affecting the surface of the machined part at the core, when processing technology.Some materials need to heat treatment before processing, as usual for quenched and tempered 45 # steel, after the processing will have different surface effect.AdditionIndustry News August 26, 2016
- Have you ever seen such flange forging?The use of large diameter flange range although there is no ordinary flange widely, but it is also due to the difference of using the environment can be divided into different kinds.The most common in the field of mechanical manufacturing large diameter flange there are two main types, namely, flat welding flange, flange and butt weld ends with flat welding flange production the most.The two flange structure difference is bigger, use scope also has its own specific.Flat welding flange is much less rigid than the butt welding flange, so it used the occasion of high temperature and pressure also without the latter, butt welding flange has another name called high neck flange, for large diameter flange sealing surface of the industry is mainly divided into planar and concave and convex type, mainly in the production of flange, is according to the different use of large diameter flange environment and temperature level to determine its sealing surface forms.Production technology of large dIndustry News August 26, 2016