ROLLING OF METAL (auxiliary operations used in connection with metal-working operations covered in B21, see B21C; bending by rolling B21D; manufacture of particular objects, e.g. screws, wheels, rings, barrels, balls, by rolling B21H; pressure welding by means of a rolling mill B23K20/04)

Child Classifications

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• B21B 1/00 Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section (B21B17/00 - B21B23/00 take precedence; with respect to composition of material to be rolled B21B3/00; extending closed shapes of metal bands by simultaneous rolling at two or more zones B21B5/00; metal-rolling stands as units B21B13/00; continuous casting into moulds having walls formed by moving rolls B22D11/06); Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations IPC+CPC Available in IPC and CPC
• B21B 11/00 Subsidising the rolling process by subjecting rollers or work to vibrations, IPC+CPC Available in IPC and CPC
• B21B 13/00 Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories (B21B17/00 - B21B23/00 take precedence) +5 CPC IPC+CPC Available in IPC and CPC
• B21B 15/00 Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills +9 CPC IPC+CPC Available in IPC and CPC
• B21B 17/00 Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling IPC+CPC Available in IPC and CPC
• B21B 19/00 Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work (straightening by rollers B21D) IPC+CPC Available in IPC and CPC
• B21B 21/00 Pilgrim-step tube-rolling +1 CPC IPC+CPC Available in IPC and CPC
• B21B 2201/00 Special rolling modes 2nd only +9 CPC CPC only CPC only
• B21B 2203/00 Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods 2nd only +22 CPC CPC only CPC only
• B21B 2205/00 Particular shaped rolled products 2nd only +2 CPC CPC only CPC only
• B21B 2261/00 Product parameters 2nd only +6 CPC CPC only CPC only
• B21B 2263/00 Shape of product 2nd only +6 CPC CPC only CPC only
• B21B 2265/00 Forming parameters 2nd only +8 CPC CPC only CPC only
• B21B 2267/00 Roll parameters 2nd only +7 CPC CPC only CPC only
• B21B 2269/00 Roll bending or shifting 2nd only +3 CPC CPC only CPC only
• B21B 2271/00 Mill stand parameters 2nd only +2 CPC CPC only CPC only
• B21B 2273/00 Path parameters 2nd only +8 CPC CPC only CPC only
• B21B 2275/00 Mill drive parameters 2nd only +2 CPC CPC only CPC only
• B21B 23/00 Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes (B21B25/00 takes precedence) +1 CPC IPC+CPC Available in IPC and CPC
• B21B 25/00 Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor IPC+CPC Available in IPC and CPC
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