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Forging round HVG – BVB Alyans, TOO | all.biz
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Forging round HVG

Forging round HVG

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58896.59 CNY
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Kazakhstan, Astana
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8 years on Allbiz
Technical characteristics
  • BrandСМЗ
  • Country of manufactureRussia
Description
The HVG tool steel is applied to production of the measuring and cutting tool, thread gages, broaches, taps long, development of long and other types of a special purpose tool, holodnovysadochny matrixes and punches, the machining attachments. The cutting end of such tools during the work is exposed to abrasion, thermal influences and power loadings, carrying out continuous deformation of the cut-off layer. These very severe conditions of work define requirements to materials of the cutting end. Suitability of similar materials is defined by their hardness, heat resistance, mechanical strength, wear resistance, technological effectiveness and cost. It is clear, that implementation to one material (wedge) in another (preparation) perhaps only with the prevailing resolution of the first. Diamond and cubic boron nitride have the highest hardness, and hard alloys and a mineralokeramika are much more solid tempered tool by staly. Firmness of the majority of constructional materials is lower than the hardness of the corresponding tool. However under the influence of high temperature when cutting the hardness of many materials decreases and, in particular, the hardness of the tool can be insufficient for cutting implementation. Property of material to keep necessary hardness at high temperature is called heat resistance which is characterized by critical temperature. The tool with a temperature will not be higher critical effectively to work. It is obvious that this temperature determines admissible cutting speed. Doping elements are entered for increase in hardenability, hardness penetration, reduction of deformations and danger of cracking of tools. Chrome - a constant element of low-alloy steels. For improvement of properties in them in addition enter manganese (1 - 2%), silicon (1 - 1.5%), tungsten (1 - 5%). Now the steel following is applied: X, 9HS, HVG, HVSG. HVG steel, is characterized by a small hardening strain and applied to long rod tools (a drill, development, a broach, etc.) . According to GOST 5950-73 ("Bars and strips from tool alloy steel. Specifications.") HVG low-alloy steel is exposed to the following heat treatment: 1. Annealing at t = 770 - 790 of C with the furnace with a speed of 30 With / the p 2. Tempering at t = 830 C, oil 3. Issue at t = 180 C, air. For this steel such mechanical properties as a conditional limit of flowability, strength, percentage elongation and relative narrowing are not defined. On structure of HVG - hypereutectoid steel of a perlitic class. It is exposed to incomplete hardening from temperature slightly above a point And, and to low issue. The structure of martensite and excess carbides (the alloyed cement carbide) provides it the hardness (HRC 62 - 69) and high wear resistance. However because of low heat resistance low-alloy steels have operational properties, almost identical with carbon steels. Unlike carbonaceous they are less inclined to an overheat and allow to produce tools of the big sizes and more irregular shape, however are applied to the tools working with the small cutting speeds which are not causing heating over 200 - 260 Pages. The hardening strain at HVG steel is small. Such doping elements as manganese, silicon and tungsten are a part of this steel. Manganese (1-2%) provides the minimum dimensional change of the tool when tempering. Intensively reducing an interval of temperatures of martensite transformation, it promotes preservation in structure of the increased amount of residual austenite (15-20%) which partially or completely compensates increase in volume as a result of formation of martensite. Silicon (1-1.5%) increases resistance to issue a little and promotes formation of easily separating scale. Tungsten (1-5%) increases wear resistance. Buy the Forging round HVG legko:1. You send zayavku2. We expose to you schet3. You pay convenient for you sposobom4. You receive the goods the Most important that you need to know about the BVB-alliance company. • Deliverable metal rolling constantly is available, and is stored "about 2000 tons" in a warehouse. • Own production of a professional flooring. • We offer a payment delay "about one month". • We do everything possible for minimization of terms of processing and delivery. • We carry out metal cutting in the size and according to your drawings. • We provide service of safe custody in the covered warehouse. • We offer the loyalty program allowing to receive discounts for purchase, processing or delivery of metal rolling. Advantages of work with nami:1. Goods available on sklade2. Official garantiya3. High quality tovarov4. Operational dostavka5. The program round HVG you can specify the loyalnostiaktualny price on the Forging at our manager. The final price of products forms, proceeding from terms of delivery: quantity, terms of payment and place of shipment. Ask the manager. This price list has exclusively information character and under no circumstances is not the public offer determined by provisions of the p. 2 of Art. 437 of the Civil code of the Russian Federation.

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