Heat treatment new technology produces medium application in mechanical razor blade

, ltd.

Meanwhile, it Also Explains Why Heat Treatment Technologies Are The Core Competence Of Machinery Blades.

Mechanical razor blade is lumber, papermaking, presswork, the cutting cutting tool with the raw material of the industry such as leather, plywood and product necessary treatment, bit norms breed is much, heat treatment difficulty is great. Develop as the high speed of afore-mentioned industries, the dosage of bit year after year increases by degrees. Object of treatment of mechanical razor blade basically is metalloid material, bao Ren is long and thin. As a result of the characteristic of treatment, requirement razor blade should have tall hardness, obdurability, wearability and certain hot rigid already, should have again fight fatigue fracture and carbide high flake ability, especially the dig cutting tool that lumber treatment uses and cutting tool coming back, performance characteristics demand is higher. The pull current of razor blade of round steel machine of after of form heated processing Cheng is current mechanical razor blade has two kinds of cases with material: Namely whole is alloy steel or ministry of high-speed steel, blade is carried on the back for alloy steel or high-speed steel blade (also weigh cutter hub) the steel that it is carbon. Latter shapes means has Zuo drill rod and high temperature to press make friends to set receive two kinds. Zuo solder also calls Zuo solder, a kind of method of join metal. Use the solder with lower than weldment melting point (fill metal) heat together with weldment joint (with heating furnace) , after solder is fused, infiltration and cram joint clearance and achieve connective goal. Make friends of high temperature pressing is set receive heat blade steel and carbolic steel cutter hub to high temperature namely, solder the cutter hub of blade steel together with rolling mill, belong to photograph of a kind of solid to solder method. Cent of the craft that set steel is set for hot-rolling solder medicine receive, set without oxidation hot-rolling receive, without oxidation hot-rolling of the medicine that add solder receives 3 kinds. Each has his strong point of craft of two kinds of figuration, but Zuo solder is received than setting more some more advanced. It is with Zuo solder craft exemple, pull current Cheng is as follows: (Expect below edge alloy steel or armor plate of steel of carbon of 1) cutter hub, high-speed steel armor plate, and school smooth alignment. (Skin of oxidation of surface of 2) abrasion armor plate, blade steel needs 4 to burnish. (Armor plate of 3) cutter hub solders place opens slot, blade steel again school is smooth. (Burr of chamfer of 4) purify knife, cleared blade steel 4 weeks of burr. (5) washs knife chamfer and blade steel face. (6) reachs blade steel batten in the sheet copper on knife chamfer upper berth and secure, make the preparation before good solder. (7) installs furnace to heat, drill rod solder is finished in protecting atmosphere furnace, heat, cooling labor situation. (8) examination quenchs metallographic hits hardness. (After 9) gives heat, fast burnish goes to the broken bits that drop copper, the school that take the advantage of heat is smooth. (10) temper. (After temper of 11) first time gives heat instantly school smooth alignment. (12) checks metallographic of hardness, temper. (Instrument of 13) a favourable turn is machined. (14) asks to decide to whether want deep cold treatment according to the client. (15) bag puts on a factory. Without oxidation protective atmosphere heats the technology is steely heat to wait for generation oxidation decarbonization blemish in air, to prevent this corrupt practice, people will fill neuter atmosphere to be like nitrogen in heating furnace, undertake protective heating to workpiece, this kind of technology calls protective atmosphere heat treatment. Nitrogen abounds in in air, occupy airy about 79% . It is OK that nitrogen is gotten on industry the oxidation in the methodological depart air of chemically or physics and nitrogen. The nitrogen of molecularity condition is in normally heat neuter shows to general metal and iron and steel in the process, both neither oxidation, decarbonization, also not oxidize content is reductive. Use azotic radical to protect atmosphere energy-saving environmental protection, will be henceforth the way that heat treatment develops. Solder - quench technology of compound heat treatment is compound heat treatment is will two plant or more heat treatment craft are compound, or it is heat treatment craft is mixed other technology is compound, dig the latent capacity of material with older rate, make workpiece acquires the admirable property that onefold technique cannot obtain. As the development of national economy and science and technology, onefold heat treatment technology often cannot satisfy the high demand that people uses to material, cause the development application of technology of compound heat treatment. Zuo solder, quench technology of compound heat treatment can make solder intensity and heat treatment quench quality promotes substantially. With Jia Longfeng company of steel cutting tool is exemple, company place chooses stuff of Zuo solder edge to quench heat temperature exceeds 1, 100 ℃ , the melting point of outclass copper (1, 083 ℃ ) , heating in the process, welding flux copper is molten, originally blade steel and matrix firmly solder, finish already solder to produce austenite photograph to change again, kill two birds with one stone, when energy-saving section. Cooling chamber turns to fill tall purity nitrogen after austenite is changed, finish quench cooling working procedure. When workpiece cold control to 550 ℃ , open box to give heat. Nextpage heats quickly the technology is in craft of cutting tool heat treatment, have two the most important craft parameter, heat namely temperature and heat time. According to formulary P=T (37 Tgts) the P - in type quenchs heat parameter; T - quenchs heat temperature, k; Ts - quenchs heat time, s. From increase carbide deliquescent quantity, raise austenite alloy to spend set out, austenite changes temperature to had been jumped over higher, in order to increase the wear-resisting of cutting tool and hot rigid, but from refine grain, raise tenacity consideration, quench temperature shoulds not be exorbitant. Use a characteristic according to mechanical razor blade, should adopt quench inferiorly heat temperature, longer heat preservation time, but this action can waste much the sources of energy, carry out through relapsing, the author fumbles go out to heat quickly craft, use higher temperature, shorter time namely, make edge is achieved hard the effect of pliable but strong, can see from formula, raise temperature more apparent than the effect between overtime, the parameter that wants both action only is identical, the effect of heat treatment should be consistent. Aborning author experience arrives to heat quickly must have mastered " degree " concept, otherwise outsmart oneself. Form heated handles a technology to combine forming and heat treatment effectively, can produce the double effect of deformation aggrandizement and heat treatment aggrandizement at the same time, acquire the integrated and mechanical property that cannot obtain by onefold aggrandizement method place, the craft of this kind of integrated aggrandizement calls deformation heat treatment. Deformation heat treatment besides can acquire exceedingly good mechanical property, because rise forming and heat treatment marriage, can of leave out heat treatment heat afresh working procedure, thereby leave out many energy resources is used up, heating installation and workshop cover an area of an area, the oxidation that still can reduce material at the same time burns caustic and decarbonization, be out of shape wait for heat treatment blemish. Accordingly, craft of deformation heat treatment holds exceedingly good Jiang Ren concurrently to change the effect and enormous economic benefits double effect. The thorough research of deformation heat treatment and application, can make forming and heat treatment more close together ground union rises, will cause technological process of mechanical manufacturing industry, working procedure to differentiate equipment is decorated etc happen a series of heavy revolution, the science that also will promote forming and heat treatment technology at the same time develops, it is the hot-working technology that has applied perspective very much. Change after exceeding the classics of steel of tall alloy tool such as high-speed steel of plasticity alignment technology to quench normally, the rudimental austenite that 25%~30% contains in the organization (RR) , RR does not return can further change firmly to become martensite surely (M) . Martensite photograph changes in the process, when stress under soft photograph (austenite) succumb when intensity, can produce plasticity to be out of shape, this kind of phenomenon calls martensite photograph to change plasticity. According to the author old test studies, proof steel changes in heat treatment photograph prominent appearance is had to change in the process exceed plasticity effect, changing namely the plasticity in the process wants than changing the plasticity of new old organization raises around severalfold and even a few times. Will think all the time for years, quench take the advantage of heat corrective can obtain remarkable result, although the bag contains thermoplastic element, the contribution with RR good plasticity, but the mainest is to change the action that transcends plasticity. Change the whole process that exceeds plasticity effect to happen at photograph of RR → M to change, but this kind of effect is transient, should change undertake the most acuteness when, change super- plasticity effect is the most distinct, consequently curve of model variable frequency should present a peak value. Apparent, the condition of correspondence of this peak value should be corrective optimal opportunity, master correctly and use this optimal opportunity, quench to guidance take the advantage of hot corrective craft and operation, will have real sense. Because mechanical razor blade is fine thin long, 10~30mm bends after quenching normally, apply change exceed plasticity principle, very easy and corrective come over. Steel is in quench the photograph in cooling process changes exceed plasticity to go up a bit than temperature is being nodded in Ms the austenite plasticity of condition is several times taller, accordingly, in quench take the advantage of when heat is corrective, understand correctly and make full use of to change exceed plasticity principle, actual to heat treatment production has direct effect. Application nods the following temperature to undertake alignment in Ms, not only it is feasible, and it is very applicable, can at the same time corrective thermal stress and constituent stress cause be out of shape, it is the requirement that is helpful for assuring workpiece tall hardness, good to be helpful for improving the work requirement, tonnage that drops pair of corrective devices and working requirement requirement and corrective quality, manufacturing efficiency is advanced advantage, answer to popularize application energetically. The induction heats the 1/5~1/10 that ministry of blade of razor blade of machinery of blade steel technology seizes cutter hub total mass only, want to undertake quenching having the effect that heats to whole likewise to blade steel only. The high frequency induction with advanced application heats technology, the design is special quench machine , the razor blade that is aimed at different specifications designs inductive group of individuation, make up photoelectricity high temperature to measure lukewarm plan, can undertake smoothly high frequency quench. Belong to as a result of high-speed steel and matrix steel from hard profiled bar, after high temperature heats, in air refrigeration can obtain very tall hardness, and as a result of high frequency quenching is local sclerosis only, and rate is rapid, so can greatly energy-saving. The computer accuses technology of lukewarm technology computer to apply at heat treatment domain is computer technology progress and the product that industry develops demand. Temperature is the soul of heat treatment, going up somehow tell, temperature decides everything, changing is unripe by temperature change, be out of shape cause by temperature. Fine dragon succeeds in heat treatment of mechanical razor blade and steadily carry accuses lukewarm technology with the computer, strode to intelligent heat treatment one stride. Personal computer applies it is to make traditional experience craft spans to develop for science model. The development of intelligent heat treatment studies, will make heat treatment casts off the laggard status that relies on experience and skill, to forecast manufacturing result and implementation accurately way of reliable quality pilot develops. Technology of deep cold treatment should client demand, some matrix steel, tall alloy steel blade steel razor blade, to increase its dimension stability, often increase deep cold treatment before finished product razor blade leaves factory. And 3 times temper already amounted to high-speed steel razor blade acme, not was necessary to have deep cold treatment again, if quench temperature photograph is spent to lower, grain,compare petty, tenacity is compared originally tall, if the client has a demand, also can have deep cold treatment. After the bit classics deep cold treatment with sufficient temper, hardness won't increase, have to tenacity instead damage, so, no matter what is new,technical application must have specific aim, cannot implicit. Technology development is never-ending, craft also is in the heat treatment of mechanical razor blade to change ceaselessly. Plating of Chinese nitriding ion is at present compound coating technology cuts paper razor blade in 65Mn steel successful already application, laser quenchs, the heat treatment new technology such as gas phase deposit is in development. What is core competition ability? Heat treatment technology is the core competition ability of mechanical product. Heat treatment does not give reject to be tasted without do poorly done work over again is the biggest energy-saving, make a product that has world advanced level, it is energy-saving more at the same time medium high-quality goods. CNC Milling