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SGS Brushed Deep Drawn Stainless Steel Parts CNC Milling

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SGS Brushed Deep Drawn Stainless Steel Parts CNC Milling

Brand Name : Huanhai

Model Number : HHTD-010

Certification : SGS

Place of Origin : Qingdao

MOQ : 2000pcs

Price : negotiable

Payment Terms : T/T, Western Union

Supply Ability : 5000ton/year

Delivery Time : 4-6weeks

Packaging Details : plywooden

Material : Stainless Steel

Application : Stainless steel cover

Surface : Polishing

Grade : Food stainless steel

Thickness : 0.3-3.0mm

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Deep Drawing Parts Of Stainless Steel Part Metal Deep Drawing Parts

Stainless steel deep-drawn parts

It is often difficult for metal stamping companies and tool shops that use ordinary carbon steel to make parts from stainless steel. Past negative experiences and poorly designed manufacturing processes often produce misunderstandings and myths about these corrosion-resistant materials.

For example: the hardening rate of all stainless steel is higher than that of ordinary carbon steel. This fact contributes to a long-standing myth that stainless steel is more difficult to form than low-carbon steel because they work too fast. In reality, stainless steel is very formable. In fact, some grades of inductance are much higher than ordinary carbon steel. In addition (another myth-breaker), stainless steel is often deep drawn into difficult shapes, without intermediate fading. Even ferrite grades that are not easy to form have outstanding ductility and are easy to be painted in depth. The North American Specialty Steel Industry Association is a voluntary industry association that represents almost all specialty steel producers in North America. It asserts that it is not difficult to cooperate with stainless steel, it is just different.

Stainless steel is an iron-based alloy with a chromium content of more than 10.5%. The chromium in the steel naturally reacts with the oxygen in the air to form a passive chromium oxide (Cr2O3) film on the surface of the steel. Simply put, being passive means that the board no longer chemically reacts to its surrounding environment. It is this passive membrane that stainless steel lacks its corrosion resistance.

Essentially, two sets of stainless steels are commonly used for deep-drawn metal stamping: these steels are classified into the celestial and ferrite groups. Type 200 and 300 series identify groups of celestial bodies. Types 304 and 316 are non-magnetic types and are the most widely used grades in the celestial group: Type 304 is the most common. Some difficult deep paintings may require a special version with a slightly higher nickel content of grade 304. This grade is sometimes referred to as 304 DDQ. However, using 304 DDQ by default is not a reasonable approach because it is more expensive and unavailable. In addition, most depth drawings can be easily implemented with standard grade materials, such as 304 or 305.

The type 400 series identifies the ferrite group, although there are also some Matensi stainless steels in the 400 series. Type 430 is a general-purpose stainless steel made of ferrite. Its ductility is similar to that of carbon steel, and this grade is magnetic.

Both ferrite and celestial stainless steel work faster than carbon steel. Therefore, the pressure to form stainless steel is higher than that of ordinary carbon steel with the same thickness and temper. In addition, the chromium oxide surface film, even if it is a very thin layer, significantly increases the level of friction between the tool and the work piece. The combination of high forming pressure and surface friction results in a tool wear rate that is significantly higher than the tool wear rate used to form carbon steel. These higher wear rates increase tool maintenance, downtime and production costs. Therefore, appropriate processing methods, tool coatings and lubricants must be used to improve overall tool performance.

Mould materialD2,DC53,YG15,YG20,SKD11/51/61,SKH-9,Cr12mov, Cr12,45#, etc.
Product materialcopper, brass, metal, stainless steel, BeCu,aluminum
Processing methodsForings,CNC milling and turning,Grinding,Broaching,etc.
Processing equipmentCNC machine,Automotic lathe machine,EDM machine,Stamping lathes,Wire-cutting machine,Milling/Grinding machine,Punching/Drilling machine,Ultrasonec cleaning machine,etc.
Detection equipmentProjector,Calliper,Height gauge,Screw gauge,Hardness gauge,etc.
ApplicationElectronic:Vehicle parts,CNC machining parts,Wireless receiver metal parts, 3G/4G Modem Wireless Network metal parts,USB housing. Automotive interior parts: connector, navigation frame, car key. All kinds of connectors, digital parts.
surface treatmentPlating,Painting,Powder coating,Anodization
Vibration grinding,Polishing,Brushing.or according to customer’s requests.
Design softwarePROE ,,UG,SOLIDWORK, CAD,etc.
CavitySingle / Multi per request
Mould life1-30million shots
SpecificationMany years machining parts processing experience;Precision tolerance less than 0.001mm;Depends on customer’s requirements.
DeliveryNormally within 7-45 days (according to customer drawing, quantity and material) special case will be sooner
Payment termsT/T

Wooden case or as customer's requirements

Precautions for the production of stainless steel deep-drawn parts

Due to the fast working hardening speed of stainless steel, more pressure and press energy are required. Generally, compared with ordinary carbon steel of the same thickness, it needs to be increased by 100%.

The mold material must have sufficient hardness and a highly polished surface. D2 is a high chromium alloy tool steel, which is the most commonly used steel in stamping dies. Since stainless steel also contains a high concentration of chromium, it is best to avoid such molding materials in deep drawing and severe forming applications. Whenever sliding occurs between two materials, you must ensure that the materials in contact are different to avoid pain. The best deep drawing performance is usually achieved by using cemented carbide drawing rings or duralumin bronze devices.

Extreme pressure lubricants are essential for deep drawing stainless steel, but soluble oils can be used with aluminum bronze tools. Common practice should include lubricating the sides of the blank to reduce the tendency for timidity.

Polyethylene (PE) or polyvinyl chloride (PVC) plastic film can be applied to the steel surface to help paint and protect the surface surface. These films provide excellent lubrication and have a lower coefficient of friction value than oil. PE is usually sufficient for most purposes, but PVC may be required for serious draws and multiple molding operations. Warning: Both may be difficult to delete and should not be left on the stamped part for a long time. Exposure to the sun may make them impossible to remove.

The pressure of the blank holder is much higher than that of carbon steel. The iron grade (430) requires about 50% of the pressure, while the celestial grade (304, 316) may require up to three times the strength of ordinary carbon steel. This is an important factor that needs to be considered when evaluating news energy and tonnage capacity in the news selection process.

Due to the high pressure and frictional heat, the drawing speed will be much slower than that of ordinary carbon steel. A unique feature of cold-formed stainless steel is that when a slower forming speed is used, more severe deformation may occur. This is very different from ordinary carbon steel. Regardless of the formation speed, the formation form of ordinary carbon steel is almost the same. Generally speaking, when the stainless steel is formed into a difficult shape, the speed is reduced.

Compared with ordinary carbon steel, stainless steel has a larger required gap between the broaching hole and the cavity wall. Generally speaking, celestial grades require alloy thickness plus an additional 35% to 40%: most ferroalloys require material thickness plus 10% to 15% additional clearance.

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