Hexagon nuts (also known as finished hexagon nuts) are available in ASTM A563-A and are compatible with mild steel Bolts, such as ASTM A307, ASTM F1554 Grade 36, SAE Grade 2 and AASHTO M183. SAE Grade 5 and Grade 8 nuts are also available in finished style. Since hot-dip galvanizing usually increases the thickness of the threaded part of the fastener by 2.2 to 5 mils, the thread size of the galvanized hexagon nut is too large to compensate for the anti-corrosion coating on the bolt. Carbon Steel Nut,Galvanized Nut,Carbon Nuts,Carbon Steel Hex Nut Taizhou Hongchuang Hardware Co., Ltd. , https://www.jstaizhouhongchuang.com
/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Home>Bearing knowledge>Selection of ring blanks Selection of ring blanks
Ring blanks include annealing bars, tubes, sheets, hot forgings, warm kneading parts, cold kneading parts, fine ramming parts, high-speed pier forgings, hot-rolled parts, etc.; the influence of the type of blank on the process Very large. The following applies to the analysis of the applicable conditions of various blanks. /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
Annealing bar material: suitable for turning small outer ring with outer diameter less than 50mm; solid bar material with round cross section; ring ring layout; therefore low data utilization; large turning amount. Suitable for multi-axis active Processing large quantities of ferrules on lathes.
Pipe material: It is mainly used in large-volume production of small and medium-sized bearings on the active line; direct turning with single-axis or multi-axis active lathe; turning amount. The size of the tube is usually 20-80mm; not exceeding 105mm. The ferrule is made of cold steel pipe; the large diameter can be used for hot-rolled steel pipe. The steel pipe is used to produce the ferrule; the data utilization rate can reach 50%-60%; the bearing life is higher than that of the general forging. The defect is Steel pipes are more expensive; the supply and standards are lacking.
Sheet: It is only suitable for making live and tight rings of small thrust ball bearings; or as a miniature bearing blank. High production power; saving data.
Hot forgings: the primary blank for the current turning ferrule; suitable for mass production; suitable for single and small batch production. The outer diameter of the forging is greater than 26~50mm. The hot forging is arranged tightly; the data utilization is slightly lower than the pipe material. However, there is a lack of solid outer surface layer, uneven thickness, large position error, large turning error, low turning power, and easy residual internal stress.
Warm extrusion parts, cold extrusion parts: suitable for large-scale production of medium and small ferrules; warm kneading is also suitable for larger or more confusing ferrule blanks. Such blanks are arranged tightly, with high precision in shape and scale; Small and even; the surface is flat and lubricated; the amount of turning. The more the å³è¾œè™»ã‚µ å³è¾œè™»ã‚µ å…¹ 圆 圆 怀 怀 怀 怀 怀 怀 怀 怀 怀 50 ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; However, there are still some problems in the production of such blanks.
Fine 辗 wide parts and high speed 镦 short 笺: fine cold, hot 辗 expansion parts are arranged tightly, shape and scale precision is high, appearance quality is good, less turning, data utilization is as high as 70% ~ 80%. Suitable for large quantities and Large ferrule production; but there are still some problems in the process. High-speed pier forgings contain units and towers; high quality, low cost, data utilization rate of 50% to 60%; suitable for medium and small ferrules Produced in large quantities; but the equipment is expensive.
Hot-rolled parts: ferrule blanks that are placed in a series of equidistantly placed necks (also rolled into a single piece). They are mainly used for rolling ferrules with a chaotic outer general shape; for example, inner cones and ball bearings Circles, etc. Suitable for large-scale production of small and medium ferrules; but due to the process of expanding the blank itself; there are not many thermal expansion parts.
In general, the selection of bismuth as a blank in practice should be reasonably selected according to the detailed conditions; the selection should be based on the size of the production batch, the layout shape and scale of the ferrule, the utilization of the workpiece data and the amount of turning, the supply capacity of the blank, and detailed Car processing ability (processing method, processing accuracy, etc.), and special requirements of satisfactory bearing users (such as life, corrosion resistance).
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Chinese hex nut manufacturer Hongchuang Hardware provides hex nuts of various materials, such as carbon steel, stainless steel, alloy steel, titanium, etc.
Source: China Bearing Network Time: 2013-03-31