Factory Promotional professional cnc machining parts Manufacturer Supply to Ecuador
1. Feature:cnc part,cnc turning parts,cnc milling parts,cnc router parts, knob,cnc machining part 2.machine:CNC lathe,CNC milling, stamping machine,drilling machine,grinding machines. 3. Finish: color anodized,polishing, zinc plating, nickel plating, chrome plating, powder coating,etc. 4. Packing: Standard export carton or depending on customer’s requirement 5. MOQ: 500pcs and more(depending on the design) 6. Price: reasonable and competitive price as per your drawing Product Name ...
Factory Promotional professional cnc machining parts Manufacturer Supply to Ecuador Detail:
1. Feature:cnc part,cnc turning parts,cnc milling parts,cnc router parts, knob,cnc machining part
2.machine:CNC lathe,CNC milling, stamping machine,drilling machine,grinding machines.
3. Finish: color anodized,polishing, zinc plating, nickel plating, chrome plating, powder coating,etc.
4. Packing: Standard export carton or depending on customer’s requirement
5. MOQ: 500pcs and more(depending on the design)
6. Price: reasonable and competitive price as per your drawing
|Product Name||cnc machining|
|material we work on||Aluminum Alloy 5052 /6061/ 6063 / 2017 / 7075 / etcBrass Alloy: 3602 / 2604 / H59 / H62 / etc.Stainless Steel Alloy: 303 / 304 / 316 / 412 / etc.Steel Alloy: Carbon Steel / Die Steel / etc.Other Special Materials: Lucite / Nylon / Bakelite / etc.|
|process||Forging/ milling /polishing /Painting /anodizing /brushing /casting /assembling/inspecting|
|Quality Assurance||ISO9001: 2008 and ISO/TS16949: 2009 and GMC of TUV ( specially for auto industy) certification.|
|finish||zinc Plated, chrome plated, powder coating, hot-dip galvanized, electrophoresis or others;|
|surface treatment||Polishing, zinc plating, nickel plating or chrome plating, phos plating etc|
|part size||Diameter from 0.5mm to 150mm;|
|tolerance||Can be kept in +/-0.01mm|
|Machining Equipment||Machining Center / CNC Lathes / Grinding Machines / Milling Machines / Lathes / Wire-cuts / Laser Cuts / CNC Shearing Machines / CNC Bending Machines / etc.|
|main products||Precision Machined Parts / CNC Machined Parts /Machinery Spare Parts /Auto Parts / Brass Fittings;Oil Plugs /Oil Level Indicators /Gear Boxes/Speed Reducers ;Kinds of Valves / Bib cocks /Taps /Pipe Fittings/ Tee Fittings / Vent Plugs|
(2) classification as product raw material (Aluminum Alloy, Stainless Steel, brass, Steel, etc. )
(3) classification as application of product
(4) classification as surface treatm aluminum machining part ent ( Chrom plated, zincplated, nickleplated, anodizing, polishing, hot-DIP galvanized, electrophoresis, oxidation, coating, etc )
Product detail pictures:
Factory Promotional professional cnc machining parts Manufacturer Supply to Ecuador, The product will supply to all over the world, such as: , , ,
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BSA air rifles are the result of over 150 years of English gunsmithing success coupled with the very latest in precision manufacturing.
For many years BSA has been making gun barrels of the highest quality. Indeed, BSA is the only volume manufacturer of Air Rifles which uses Cold Hammer Forged barrels. These are usually reserved for use in high grade and military Fire Arms.
Special steel is used for BSA barrels which work hardens when it is cold swaged to enhance the wearing qualities of the rifling. The barrels are produced from solid bar, this is deep hole drilled on specialist deep hole drilling machines, a method of manufacture that ensures that the bore is straight and has a superior surface finish ready for swaging. Many other air rifle manufacturers use tube to produce their barrels, however the process of “drawing” the tube can result in a “skin” forming on the surface of the bore which can result in a “flaking” condition during later machining operations.
After deep hole drilling the barrels are rifled on a cold swaging machine where the barrel blank is passed between 6 rotating hammers, each weighing approximately 20lbs, over a specially machined tapered mandrel. To swage a single blank takes over 35,000 hammer blows. The action of this cold swaging increases the length of the barrel by 15%; work hardens the surface of the rifling, refines the grain structure of the steel, and produces a mirror like finish.
The tapered mandrels are made from specially formulated tool steel, which is manufactured in small batches under laboratory-controlled conditions. It is then CNC machined to the most exacting tolerances to produce the finished mandrels, each of which costs well over £1,000 but is capable of producing several thousand barrels.
The form of the rifling is reproduced as a mirror image on the mandrel. The swaging machine is able to accurately position the mandrel between the centre line of the hammers, and by setting its position up or down its tapered length, the size of the hammered bore of the rifling can be adjusted to very fine limits.
A further big advantage of the cold swaging process is that it can be used to produce a “natural” choke at one end of the barrel. The normal method of choking is to finish the barrel and then squeeze the outside diameter to reduce the bore size, but in some circumstances this can distort the pattern of the rifling. However with the BSA method the rifling form is reproduced perfectly from the impression on the mandrel, with the bore gradually decreasing very slightly in diameter to give a perfect choke with considerable benefits in accuracy.
By Maggie 2016-5-30 19:39
It is not easy to find such a professional and responsible provider in today's time. Hope that we can maintain long-term cooperation.
By Jonathan 2016-8-19 15:58