Special stamping techniques
What is stamping with extrusion, and when is it used?
Answer
Raw material and process route The material form decides which processes are available: bar can be extruded, headed or forged; tube can be turned but has no bottom to form; sheet is what deep drawing and stamping start from. Raw material Process route Used for 1215 free-machining steel bar CNC turning Turned housings with no bottom wall 10# steel tube CNC turning Turned housings from tube Pure iron tube CNC turning Turned housings where magnetic response matters Pure iron sheet Deep drawing / stamping Deep drawn and stamped housings Pure iron bar Cold extrusion, cold heading or hot forging Extruded, headed or forged housings 10# steel bar Cold extrusion, cold heading or hot forging Extruded, headed or forged housings
Sources
- Solenoid Housing & Valve Housing Manufacturer | BalfordRaw material and process route The material form decides which processes are available: bar can be extruded, headed or forged; tube can be turned but has no bottom to form; sheet is what deep drawing and stamping start from. Raw material Process route Used for 1215 free-machining steel bar CNC turni...
- Machining Pre-Forms: Hot Forging, Casting or Bar Stock?What is cold extrusion used for? Cold extrusion forms the billet at room temperature, so the finished blank comes off the tool with a good surface finish and tolerances much closer to finished than hot forming gives. It suits symmetrical parts — sleeves, cups, bushes and drawn-type housings — and it...
- Machining Pre-Forms: Hot Forging, Casting or Bar Stock?A: It depends on how much material you are currently throwing away and what the part has to do. If the finished part is a shaped body with a boss or a lever, a forging arrives much closer to the finished geometry and the machining time falls sharply; above roughly a few thousand pieces a year the fo...
- Cold Extrusion vs Deep Drawing for Valve HousingsBalford evaluates both routes for every solenoid valve housing program. The comparison below is the starting point engineers should use when a new housing drawing arrives. Figure 1 — Cold extrusion route vs. deep drawing route COLD EXTRUSION Round bar Cold extrusion → near-net housing CNC mach...
- Cold Extrusion vs Deep Drawing for Valve HousingsCold extrusion upsets and forward-extrudes a round bar into a near-net housing. The process is efficient for axisymmetric parts and can produce thick-wall sections with excellent concentricity. After extrusion, CNC machining establishes the critical ID and OD dimensions, and surface treatment follow...
- Metal Stamping & Fabrication Blog | BalfordBlog Extrusion With Sharp Corners in Deep Drawn Stamping September 28, 2024 In deep drawn stamping, extrusion with sharp corners is a common technique used to create sharp edges and corners on metal materials. Read More Ironing in Deep Drawn Stamping September 23, 2024 Ironing is a key step in deep ...
What an engineer still needs from you
- material and material condition (grade, temper)
- material thickness, plus the key diameter, height and wall thickness
- tolerances, burr direction and the visual acceptance standard
- annual volume - it decides whether tooling is single-hit, progressive or transfer
- surface finish, and any secondary machining, annealing or plating
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Send the engineering drawing (STEP or PDF) with the material grade, thickness and annual volume. Balford engineers then check it against the process window - draw ratio, wall thickness, tolerances, blank and tooling route - and come back with what is feasible and what is not. An answer on this page cannot replace that review.
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This page is an engineering answer, not a quotation and not a dimensional acceptance. It is generated from Balford's published material and held to the verified company fact sheet.