加拿大外贸
Cold Rolled Coils Full Hard尤其是"Full Hard"是什么意思
非常感谢！
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打错了.
full hand,全手工
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楼上的错误!!!!!!!!!!!!!!1
经刚性和韧性测试过的冷扎钢卷
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Cold Rolled Full Hard Sheet
Typical Applications
Application Considerations
Tolerances
Product Description
Cold Rolled Full Hard Unprocessed Sheet is produced by U.S. Steel for direct use by customers for applications that do not require any formability beyond very limited bending and/or rollforming. It is supplied directly off the cold-reduction mill without any annealing to soften the steel. Thus, the steel is highly work-hardened, and exhibits a high resistance to denting, etc., but at the same time, it exhibits only minimal ductility. The hardness is Rockwell B 84 minimum.
Since the product is supplied directly after cold rolling without further processing, Full Hard Cold Rolled Unprocessed Sheet will have residual cold mill oils on the sheet surface. Also, the
product, in coil form, includes off-gauge coil ends unless further processing is needed to facilitate processing through the customer's operations.
Unprocessed Full Hard Cold Rolled Sheet is not subject to the same product standards that have been established for other cold rolled sheet products.
Definitive shape standards have not been established for Cold Rolled Full Hard Sheet. However, further processing
through a tension leveler can improve the shape so that the shape will normally meet the ASTM specification (A568) for cold rolled flatness. If further processing is required to flatten the strip to apply oil or to remove off-gauge material, Cold Rolled Full Hard Processed Sheet must be ordered.
Ordering Information
U. S. Steel Cold Rolled Full Hard Sheet is produced to either nominal or minimum thickness. For nominal orders, the thickness tolerances are plus and minus around the ordered thickness. For minimum thickness orders, the thickness tolerance is all plus/nothing under the minimum specified.
Standard Finish
Cold Rolled Full Hard Sheet product is provided with the surface finish produced on the cold reduction mill. This will be either a matte finish or a smooth ground finish depending on the product thickness and the mill processing parameters on the specific cold-reduction mill used to manufacture the product.
Surface Treatment
The standard practice is to provide Cold Rolled Full Hard Sheet product with the residual cold mill rolling oil on the surface. Any other customer requirement will entail special processing steps and added production cost.
Special Processing
Special processing can be applied to full hard sheet products. These include recoiling to remove off-gauge at the coil ends and tension leveling to improve shape. Also, a rust-inhibitive oil can be applied. However, this entails an additional processing step, i.e., temper rolling, recoiling, or tension leveling. If the product is ordered tension-leveled or cropped back to gauge, a rust-inhibitive oil can be applied at the same time. This product is ordered as Cold Rolled Full Hard Processed.
Steel Designations and Chemistry
If the purchaser of Cold Rolled Full Hard Sheet plans to further process the product such as by annealing to soften the product or apply a hot-dip coating, it is important to order the proper steel chemistry. The steel chemistry can be specified to allow the customer to meet the end-desired mechanical properties. Also, if U.S. Steel is made aware of the end application and the additional processing practices being planned by the customer, the proper chemistry can be selected by the producing mill. For example, if the product will be hot-dip galvanized and the final application requires that the steel exhibit extra deep-drawing properties (EDDS), the steel can be melted to provide a vacuum degassed, fully stabilized product. Or, if the final product requirement is to meet the ASTM Structural Steel (SS) Grade 40, the alloying additions made during steelmaking can be properly selected.
ASTM Specifications
There is no ASTM product specification that covers all Cold Rolled Full Hard Sheet product, per se. However, the general requirements of ASTM A568 are applicable with several exceptions.
ASTM Structural Steel (SS) Grade 80 described in Specification A1008 is often processed identically to Cold Rolled Full Hard Sheet product. Thus, the term full hard is often used to describe this product. In effect, the product attributes of Grade 80 and Cold Rolled Full Hard sheet are similar. However, if additional processing (annealing, hot-dip coating, etc.) is planned by the purchaser, special steel chemistry considerations beyond the requirements of Grade 80 product will usually be required.
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thank you very much!
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学习了，看来英语学习是一个日积月累的过程。我决定以后每天到这个版块来学习十分钟。
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好多热心的同志啊
以后我得向你们多多请教了。
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哇！ＬＺ好厉害呀！弄了那么一大篇文章．
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3楼的师傅 有较详细的说明吗 有类似于这样的其他专业术语吗？
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有没有中文翻译啊，谢谢
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