Metallurgi

Kommittébeteckning: SIS/TK 261 (Maskinsäkerhet i järn- och metallverk)
Källa: CEN
Svarsdatum: den 15 nov 2019
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This document applies for plant (containing machinery and equipment) used in the process of continuous casting of liquid steel (hereafter referred to as continuous casting machine, CCM) as defined in 3.1. This document deals with all significant hazards, hazardous situations and events relevant to machinery and equipment for the continuous casting of steel, when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer (see Clause 4). This document specifies the safety requirements to be met during design, assembly, transport, commissioning, operation, maintenance (as described in Clause 5) and decommissioning of the equipment. This document assumes that the machinery and equipment of the plant is operated and maintained by adequately trained and competent personnel (see 7.5). Manual intervention for setting, adjustment and maintenance is accepted as part of the intended use of the plant. This document assumes that the machinery is used with adequate workstation lighting conforming to EN 12464-1. NOTE National regulations regarding lighting should be considered and could differ from requirements of EN 12464-1. This document applies to: CCM for the transformation of molten liquid steel into solid products in sections (e.g., square, rectangular, beam blank, circular) - CCM's from the point where overhead cranes or other transport systems deposit ladles to CCM (e.g., in a ladle turret, ladle car or ladle stand); - via casting process and solidification process; - via cutting equipment; - thru the run-out-area where the cut product is finished, collected and removed from that area. This document does not cover safety requirements for: - horizontal-CCM for steel; - auxiliary plants (e.g., water treatment, refractory handling); - ladles; - cranes; - winches and hoists; - conveyors or handling systems; - workshop equipment (mould and segment shop, tundish workshop). NOTE It is recommended to use this standard in case of modernization for the parts to be modernized.

Kommittébeteckning: SIS/TK 121 (Bestämning av mikrostruktur i stål)
Källa: ISO
Svarsdatum: den 20 nov 2019
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This International Standard describes procedures for measuring average grain size derived from a two-dimensional polished cross-section using electron backscatter diffraction (EBSD). This requires the measurement of orientation, misorientation and pattern quality factor as a function of position in the crystalline specimen[1].

NOTE 1 While conventional methods for grain size determination using optical microscopy are well-established, EBSD methods offer a number of advantages over these techniques, including increased spatial resolution and quantitative description of the orientation of the grains.

NOTE 2 The measurements in this standard are made on two dimensional sections. The reader should note carefully the definitions used (section 3.3) which draw a distinction between the measured sectional grain sizes, and the mean grain size which can be derived from them that relates to the three dimensional grain size.

NOTE 3 The method also lends itself to the measurement of the grain size of complex materials, for example those with a significant duplex content.

NOTE 4 The reader is warned to interpret the results with care when attempting to investigate specimens with high levels of deformation.

Kommittébeteckning: SIS/TK 261 (Maskinsäkerhet i järn- och metallverk)
Källa: CEN
Svarsdatum: den 22 nov 2019
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This document specifies the general safety requirements for cold rolling mills for flat products as defined in 3.1. This document is applicable to: Plant (machinery, equipment, devices according Annex D) used for the manufacturing of metal cold rolled flat products from the material supply from entry (1), via the mill stand(s) (2) with roll changing devices (4), to the material removal (3) (see Figure 1). Figure 1... This standard does not cover: - Thermo process equipment, e.g. in accordance with EN 746 series; - Strip processing lines according to EN 15061, e.g. pickling line; - Abrasive blasting plants according to EN 1248; - Coil transporting system before coil take-over-point at the entry section and after coil take-over-point at the exit section, e.g. hook conveyors, overhead cranes, fork lift and railway trucks and other vehicles; - Roll shop equipment; - Hook conveyors according to EN 619; - Non-fixed load lifting attachments, e.g. according to EN 13155; - Storage equipment (e.g. high-bay warehouses); - Cranes, fork lifts, trucks and railway trucks and other vehicles; - Process technology (e.g. systems for rolling lubricant, compressed air, treatment of water, cleaning system for exhaust air); - Firefighting system. NOTE 1 Special requirements for protection of persons in case of using asphyxiant gases used in firefighting system is covered by this document, see Annex C. This document deals with foreseeable significant hazards, hazardous situations and events relevant to cold rolling mills for flat products, when used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer. It provides the requirements to be met by the manufacturer to ensure the safety of persons and property during transport, commissioning, operation and de-commissioning, as well as in the event of foreseeable failures or malfunctions that can occur in the equipment. NOTE 2 For modernization, this document (C-type standard) can be applied for the part to be modernized.

Kommittébeteckning: SIS/TK 261 (Maskinsäkerhet i järn- och metallverk)
Källa: CEN
Svarsdatum: den 22 nov 2019
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This document specifies the general safety requirements for hot rolling mills for flat products as defined in 3.1. This document is applicable to: Plant (machinery, equipment, devices according Annex D) used for the manufacturing of metal hot rolled flat products from the material supply from entry (1), via the mill stands (2) with roll changing devices (6), to the exit (5) (see Figure 1). Figure 1.... This standard does not cover: - thermo process equipment, e.g. in accordance with the EN 746 series; - continuous casting machines according to EN 14753; - hook conveyors according to EN 619; - non-fixed load lifting attachments, e.g. according to EN 13155; - roll shop equipment; - storage equipment (e.g. high-bay warehouses); - cranes, fork lifts, trucks and railway trucks and other vehicles; - process technology (e.g. treatment of water, rolling lubricant, compressed air, etc.); - separate cleaning system for exhaust air; - firefighting system. NOTE 1 Special requirements for protection of persons in case of using asphyxiant gases used in firefighting system is covered by this document (see Annex C). This document deals with significant hazards, hazardous situations or hazardous events relevant to hot rolling mills for flat products, when it is used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer. It provides the requirements to be met by the manufacturer to ensure the safety of persons and property during transport, commissioning, operation and de-commissioning, as well as in the event of foreseeable failures or malfunctions that can occur in the equipment. NOTE 2 For modernization, this document (C-type standard) can be applied for the part to be modernized.

Ämnesområden: Korrosion
Kommittébeteckning: SIS/TK 146 (Korrosion)
Källa: CEN
Svarsdatum: den 8 dec 2019
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This part of ISO 7539 covers procedures for designing, preparing and using reversed U-bend (RUB) test specimens for investigating the susceptibility of the metal to stress corrosion cracking. The term "metal" as used in this standard includes alloys.