Deep Drawing Process
Deep drawing manufacturing with conventional metal die technology is the stretching of sheet metal stock, commonly referred to as a blank, around a plug. The edges of the metal blank are restrained yet allowed to slide between two rings. One ring is the blank holder and the other is the die. The plug passes through the blank holder ring into the cavity of the die ring at the desired depth to achieve the end shape. The dimensions on the part are set based on the shape of the plug, the shape of the die, and how deep the part is drawn, meaning how far the plug travels into the die. Like hydroform deep drawing, conventional metal die deep drawn applications are typically enclosures, cans, cups, canisters, containers, cover, motor shrouds, tanks, shells, etc.
Depending on the depth to diameter ratio and the material type, we can draw, reverse draw and or redraw your part multiple times to achieve up to 2 to 1 ratios. While we can form most metals, deep drawing stainless steel is our specialty. 304 and 316 are common readily available grades and ideal materials to design with since they are excellent form-ability and corrosion resistance. Deep drawing is ideal versus spinning especially at the greater depths for parts with large annual volumes to minimize labor costs and to avoid the complications and corrosion issues common with welds and welding. For fatigue strength and uniform metal thickness critical applications, deep drawing and hydroforming are preferred over metal spinning.
Deep drawing metal pieces called preforms for metal spinning have been proven to compliment the spinning process to ensure the highest quality spun part. This is done when minimizing the material strain on the part by utilizing the best aspects of each process. Deep drawing and metal spinning as a process can produce parts that deep drawing alone and spinning alone cannot do. Once you have your part deep drawn, if it needs a hole, a stamped feature, welded fitting, or a metal polish specification you can also increase the value of your TMS drawn part while saving time and money by taking advantage of our secondary stamping, spin forming, machining, welding, and metal finishing operations.
- Build To Print Deep Drawing
- Deep Drawing Stainless Steel
- Deep Drawn Domes
- Deep Drawn Cups
- Hydroform Deep Drawing
Deep Draw Capabilities
|English Units||Metric Units|
|Max Part (Punch) Diameter||30.0 in||762 mm|
|Max Part Height||15.0 in||380 mm|
|Max Flange Diameter*||48.0 in||1,220 mm|
|Max Blank Size, Diameter||48.0 in||1,220 mm|
|Max Blank Thickness (CRS)||0.31 in||7.9mm|
|Max Blank Thickness (Stainless)||0.25 in||6.4mm|
|Min Blank Thickness||0.036 in||0.5 mm|
|Max Force||440 ton||3,914 kN|
|Typical Tolerance||+/- 0.030 in||+/- 0.75 mm|
|+/- 0.010 in||+/- 0.25 mm|
|Typical Production Volume||50 to 50,000 pieces / year|
|Typical Lead Time Prototypes / Samples||4 to 6 weeks|
|Production Lead Time After Samples||1 to 2 weeks|
Experience in Deep Drawing
TMS has over 75 years in metal forming experience and has used the deep drawing manufacturing technology for a variety of industries such as aerospace, automotive, military, ordnance, plastics, lighting, pharmaceuticals, dairy, etc… We have engineers on staff with deep drawing expertise to help guide you on designing a custom part and choose the optimal process to produce high quality deep drawn parts at a competitive and affordable price.
Our triple action hydraulic presses are state-of-the-art specifically developed for the production of deep drawn parts requiring more than one operation in a single press cycle. Our capabilities include presses up to 400 metric tons with 14″ deep cup capacity and a bed size of 48″ x 48″. If you need assistance in designing a deep drawing manufacturing process for a custom part, please give us a call today for prompt, courteous, professional service. We can assure you the finest quality job for any deep drawing process. We also can provide custom metal spinning services as well.
Custom Deep Drawing Services
Build To Print Deep Drawing
We use contract manufacturing to build highly customized, proprietary customer designed parts. We can deep draw large or small quantities, whether it is a one time part or repeat business. With in-house metal finishing, machining, and welding capabilities, TMS can deliver a ready to integrate welded sub-assembly. TMS offers pre-defined options for fittings, windows, brackets and much more.
The free use of TMS owned stock tooling.
TMS may have excess deep draw tooling available for customer use. At TMS, we invest heavily in our own tooling can produce shapes that are very close to the designed dimensions. Sometimes, the design can be altered slightly to avoid an engineering charge. Sometimes, a re-cut charge can be offered when the tool is no longer active and can be re-purposed. If we do not have the tooling to fit your needs, our machine shop can design a custom tool to fit your parts.
In a hurry? We may have the deep drawn part for you!
TMS flanged cups are deep drawn, providing you with a seamless stainless steel part that can be used for motor shrounds, enclosures, cups, lids, storage containers and more. The elimination of seam welds reduces the issues common with welded containers like leaks and corrosion. TMS can customize your deep drawn cup in-house, or work with your fabricator of choice. Common markets for deep drawing are: food manufacturing, hospitality, architecture and automotive industries.
Toledo Metal Spinning Company has designed and built the necessary tooling to manufacture several different sizes of metal domes offering various metal thicknesses and metal types. TMS utilitizes a unique one-piece flow manufacturing process to produce metal domes with very little throughput time and extremely high quality. This translates into quick delivery times and competitive pricing for customers.
Turnkey in-house tool & die services for custom tooling & DFMA Support
With DFMA Support you will reduce part cost, assembly time and increase reliability. Place an order for an assembly with us and we’ll collaborate with your design team to perform design for manufacturing and assembly (DFMA) reviews to streamline your assembly to reduce cost, improve quality, minimize inventory and time to replenish stock.
Before releasing a large volume, you want to make sure your part is going to work for you. With TMS prototyping, you can use lower cost metal spinning options to ensure the reliability of your product.
Prototyping to higher volume production quantity capabilities.
Typical Deep Drawn Materials
Standard materials we use for deep drawing are shown below. Have something else in mind? Let us know by sending us a request for quote. Our sales estimators are ready to work with you to get exactly the part you are looking for!
|Stainless Steel||304||Good||Lowest cost of high quality deep drawing stainless steel material. The high nickel content allows for good deep draw working.|
|Stainless Steel||304 DDQ||Excellent||DDQ stands for deep draw quality. 304 DDQ is similar to stainless steel 304 but with more nickel added to the alloy to further improve the ability to deep draw. When extensive secondary working of the material is to occur, this material is ideal.|
|Stainless Steel||316||Good||More corrosion resistant than 304 grade due to the addition of molybdenum with the same higher levels of nickel, thus allowing for it to be an excellent deep drawing stainless steel.|
|Stainless Steel||410||Low||400 series, generally lower cost stainless steel than 300 series since there is no nickel, is not ideal for extremely deep parts since the lack of nickel reduces stainless steels deep draw ability. The lower amount of alloying elements also reduces the material's resistance to corrosion and ability to weld.|
|Stainless Steel||430||Low||430 is similar to 410 with little less strength. Like 410, material is readily available and is less expensive than 300 series stainless steel.|
|Inconel||625||Good||This nickel based alloy as compared to most nickel based alloys has good drawing properties, but low to stainless steels and steels. Since Inconel 625 strain hardens quickly, multiple stress relieves and draw operations are required as the ratio of the diameter to the depth of the part increases.|
|Inconel||718||Low||This nickel based alloy can be formed but has less deep draw ability than 625 Inconel. The lower ability means more stress relieve operations would be required which would lead to a more expensive part costs than 625.|
|Copper||CDA 655||Good||This 97% Copper 3% Silicon Bronze draw forms well and has good strength. (UTS 92 ksi, Yield 55 ksi, %E 22) This can be used for marine applications and for cooking kettles.|
|1008-1020||Excellent||Low alloy steels generally draw very well when cold rolled and produce a good quality finish that is normally easy to powder coat after forming and minimal washing.|
|Carbon Steels||1008-1020||Excellent||Like cold rolled, hot rolled low carbon alloys form well. The hot rolling process tends to leave a surface that is not as smooth so when lower cost is priority over surface quality, hot rolled steel is a better choice.|
|Aluminum||1100-O||Excellent||Low strength alloy, nearly 100% aluminum. Draws very well.|
|Aluminum||3003-O||Excellent||Higher strength than 1100-O. 3003 Aluminum is stain-hardened when cold worked during the deep draw process.|
|Aluminum||6061-O||Excellent||6061-O aluminum is easily form in the O-temper due to its low mechanical properties. Once the final shape is obtained, the material can be solution heat-treated and aged. T4 is naturally age, T6 artificially aged.|