Special stamping techniques

What is stamping with extrusion, and when is it used?

Sources

1. Solenoid Valve Housing Manufacturer | Deep Drawn | Balford
   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 turni...
2. 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...
3. 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...
4. Cold Extrusion vs Deep Drawing for Valve Housings
   Balford 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...
5. Cold Extrusion vs Deep Drawing for Valve Housings
   Cold 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...
6. Metal Stamping & Fabrication Blog | Balford
   Blog 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

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.