| 查看: 542 | 回复: 1 | |||
| 本帖产生 1 个 翻译EPI ，点击这里进行查看 | |||
huangguaha木虫之王 (文坛精英)
我不是我
|
[求助]
英译汉
|
||
|
Generally, the upper yield point ReH has to be determined. This corresponds to the maximum stress preceding the initial drop in tensile load as the elongation increases. For determining the yield point at room temperature, the rate at which the stress is increased shall be not be less than 6 N/mm2 per second and may not exceed 30 N/mm2 per second for steel. For non-ferrous metals the rate at which the stress is increased shall not be less than 2 N/mm2 per second and may not exceed 10N/mm2 per second. The test result shall be stated accurate to 1 N/mm2. 3.2 Proof stress Rp In the case of materials without a marked yield point, the proof stress Rp [N/mm2] shall be determined. Generally, the 0,2 % proof stress Rp 0,2 shall be specified. For austenitic steels as well as austenitc-ferritic (= duplex) steels, the 1 % proof stress Rp 1,0 may be stated instead of, or in addition to, Rp 0,2. The rate of loading and the indication of the results shall be as stated in 3.1. 3.3 Tensile strength Rm In determining the tensile strength Rm [N/mm2], the rate of elongation, once the yield point or proof stress has been passed, shall not with ductile materials exceed a maximum of 40 % per min.. With brittle materials, e.g. grey cast iron, the rate of stress increase may not exceed 2,5 N/mm2 per second. The test result shall be stated accurate to 1 N/mm2. |
回复此楼» 猜你喜欢
售SCI-T0P文章，我:8O.5.5.1.O.54,科目齐全,可+急
已经有6人回复
-
售一区SCI文章T0P，我:8O.551.O54,科目全,可十急
已经有9人回复
-
售SCI-T0P文章，我:8O.5.5.1.O.54,科目齐全,可+急
已经有3人回复
-
考博求助
已经有3人回复
-
售SCI一区文章，我:8.O.551.O.5.4,科目全,可伽急
已经有5人回复
-
售SCI一区T0P文章，我:8.O.55.1.O.5.4,科目全,可+急
已经有4人回复
-
售SCI一区T0P文章，我:8.O.55.1.O.5.4,科目全,可+急
已经有5人回复
-
售SCI-T0P文章，我:8O.5.5.1.O.54,科目齐全,可+急
已经有9人回复
-
售一区SCI文章T0P，我:8O.551.O54,科目全,可十急
已经有9人回复
-
售SCI一区T0P文章，我:8.O.55.1.O.5.4,科目全,可+急
已经有10人回复
reko34
木虫 (正式写手)
- 翻译EPI: 132
- 应助: 117 (高中生)
- 金币: 4794.2
- 散金: 22
- 红花: 12
- 帖子: 780
- 在线: 417.4小时
- 虫号: 3055206
- 注册: 2014-03-15
- 性别: GG
- 专业: 机械测试理论与技术
【答案】应助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ...
RXMCDM: 金币+1, 多谢应助！ 2014-07-11 11:55:58
huangguaha: 金币+166, 翻译EPI+1, ★★★★★最佳答案, 非常感谢 2014-07-11 14:20:55
RXMCDM: 金币+1, 多谢应助！ 2014-07-11 11:55:58
huangguaha: 金币+166, 翻译EPI+1, ★★★★★最佳答案, 非常感谢 2014-07-11 14:20:55
|
一般需确定上屈服点ReH。对应伸长量增加过程中拉伸载荷首次下降前的最大应力。确定室温下的屈服点时，钢的应力上升速率不应低于每秒6N/mm2，不应超过每秒30N/mm2。非铁金属（有色金属）的应力增加不应低于每秒2N/mm2，不应超过每秒10N/mm2。试验结果应精确到1N/mm2。 3.2 屈服强度Rp 对于没有显著屈服点的材料，应确定屈服强度Rp[N/mm2]。一般规定为0.2%屈服强度Rp0.2。 对奥氏体钢和奥氏体-铁素体（=双相）钢，可使用1%屈服强度Rp1.0代替或附加于Rp0.2。加载速率和结果表示参照3.1。 3.3 拉伸强度Rm 确定拉伸强度Rm[N/mm2]和伸长率时，经过屈服点或屈服强度后，韧性材料不应超过每分钟40%的最大值。脆性材料，例如灰铸铁，应力上升速率不应超过每秒2.5N/mm2。试验结果精确到1N/mm2。 |
2楼2014-07-11 11:07:12
