Stainless steel combines corrosion resistance, strength and durability across wet, chemical, high-temperature, low-temperature and high-pressure environments. These properties make it attractive for structural, wear-resistant and precision housing applications.
The same properties make stainless steel more demanding to deep draw than many conventional sheet materials.
Stainless steel can harden rapidly under cold work. Local over-strain affects later piercing, machining and dimensional control, while high forming forces increase demands on die strength, alignment and wear resistance.
Draw ratios, radii, blank-holder force, lubrication and station sequence must be selected to control cracking and wrinkling while maintaining a uniform wall.
A successful stainless process may include fitting surfaces, pierced features and controlled edges in addition to the basic drawn form. Venting inside the tool is important where trapped air could affect the component. Edge finishing and final sizing must be planned from the beginning.
Balford has developed stainless drawing sequences that can avoid intermediate annealing for suitable materials and geometries, reducing handling while maintaining precision.
Tool design and manufacture are coordinated with the required material and geometry. Engineers calculate the number and order of forming stages and evaluate whether conversion from a welded or machined process can lower cost.
The development team verifies every stage through tool trials and measurement before approving the process for production.
Drawn stainless components are used in containers, housings, fittings and industrial assemblies where corrosion resistance and long service life matter. When considering a new design, early review of material grade, wall requirement, annual volume and functional surfaces helps identify the most economical route.
Local thickening is an integrated forming method that moves material into a selected area so one component can contain both thin and thick sections. The reinforced area can improve strength and durability without increasing the gauge of the entire blank.
The technique also gives designers more freedom to create functional transitions and curved forms that would be difficult to obtain through conventional stamping alone.
Balford developed a multi-stage process that locally increased a high-strength material to approximately twice its original sheet thickness while controlling buckling, folding and cracking. In the formed region, work hardening increased strength to about 1.5 times that of the starting material.
The original assembly used a stamped cup, a separate washer and welding. Forming the thickened feature directly into the cup converted the design into a single stamped component.
High-strength sheet has lower ductility and creates greater forming load than conventional steel. Dividing material movement across several calculated stages is essential to prevent fracture and unwanted folds.
Tooling simulation, die development and controlled tryout are used to establish a repeatable production window before volume manufacture.
Local thickening is most valuable when the current design carries extra gauge everywhere or joins several elements only to reinforce one location. Balford can review the assembly and assess whether a one-piece precision stamping can meet the same functional requirement.
High-quality sheared edges, close flatness and reduced secondary machining for precision parts.
Deep drawing is already one of the more demanding stamping processes. When the part combines non-cylindrical walls, openings, flanges and multiple forming directions, the finished geometry cannot be achieved by simply adding stations in an obvious order.
Tooling engineers work backward from the completed part to define how material must flow at every stage. The sequence, radii, draw depth and restraint must control stretch and compression without losing dimensional accuracy or uniformity.
Balford combines multi-stage deep drawing with reverse-draw methods for difficult shapes. A part may first be formed deeply in the normal press direction, then redrawn in the opposite direction before a flange or final feature is formed.
This coordinated material movement enables geometries that would be difficult to produce with a single-direction process.
Complex aluminum parts can provide major weight savings; aluminum is approximately one-third the density of steel. This is useful in electric vehicles and other applications where every gram matters.
Aluminum also transfers heat quickly, is relatively soft and can adhere to tooling. Speed, cooling, lubrication, die material and surface condition all require careful control to avoid cracks, wrinkles and galling.
Balford reviews how many operations are necessary, in what order the geometry should be formed and whether a process conversion can reduce total cost. This development work continues through tool tryout and sample validation.
The engineering team evaluates cost, quality and function together. Rather than forcing a drawing into a standard route, the aim is to propose a process that fits the product requirement and is stable enough for production.