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Dynamic tdd ul/dl configuration indication for tdd eimta in carrier aggregation

一种高强度螺栓、耐延迟断裂的技术，应用在螺钉、螺纹紧固件、拉伸载荷作所特别改进的连接件等方向，能够解决耐延迟断裂性降低、制造成本增大、耐延迟断裂性说不上充分等问题，达到耐延迟断裂性和螺栓成形性优异、螺栓成形性优异的效果

Active Publication Date: 2016-05-11
KOBE STEEL LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem in these ordinary steels that if the tensile strength is 1100 MPa or more, brittle fracture, so-called delayed fracture, is likely to occur suddenly after a period of use.
However, if the tensile strength is 1400 MPa or more, delayed fracture resistance may decrease in a severe environment where corrosion of steel and hydrogen ingress proceed simultaneously.
In addition, in the above-mentioned Patent Document 3, since the bottom of the screw needs to be applied to compress the residual stress, there is a possibility that the manufacturing cost will increase.
[0013] Thus, in the prior art proposed so far for improving the delayed fracture resistance, the delayed fracture resistance under severe environments is not sufficient.

Method used

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  • Dynamic tdd ul/dl configuration indication for tdd eimta in carrier aggregation
  • Dynamic tdd ul/dl configuration indication for tdd eimta in carrier aggregation
  • Dynamic tdd ul/dl configuration indication for tdd eimta in carrier aggregation

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Embodiment

[0091] Below, the present invention is described in more detail by enumerating the examples, but the present invention is not limited by the following examples, and can also be modified and implemented within the scope of being able to meet the purpose of the foregoing and the following, and these are all included in the technology of the present invention. within range.

[0092] The steel grades A to F and A1 to T1 composed of the chemical composition shown in Table 1 below were hot rolled to Thereafter, quenching and tempering were performed under the conditions shown in Table 2 below. The conditions of hot rolling are as follows.

[0093] The reheating temperature of the billet: 1000-1200°C, the finish rolling temperature: 900-1100°C, and then cooling to 300°C at an average cooling rate of 0.05-10°C / sec.

[0094] For each sample thus obtained, the prior austenite grain size number, tensile strength (TS), ductility (reduction of area), corrosion loss, delayed fracture str...

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Abstract

Systems, methods, apparatuses, and computer program products for time division duplex (TDD) uplink / downlink (UL / DL) configuration indication for TDD interference management and traffic adaptation (eIMTA) are provided. One method includes providing, by a network node, a time division duplex (TDD) uplink / downlink (UL / DL) configuration indication pattern. The TDD UL / DL configuration indication pattern may be used to indicate multiple TDD UL / DL configurations in DCI format C associated with the certain configured carriers andthe concrete fixed downlink subframe index.

Description

technical field [0001] The present invention relates to steel for bolts used in automobiles and various industrial machines, and bolts obtained by using the steel for bolts. In particular, it relates to steel for bolts and high-strength bolts useful as raw materials for high-strength bolts that exhibit excellent delayed fracture resistance and bolt formability even when the tensile strength is 1100 MPa or more. Background technique [0002] As general bolt steels, JIS standard steels such as SCM435 and SCM440 are particularly commonly used. However, there is a problem in these ordinary steels that if the tensile strength is 1100 MPa or more, so-called delayed fracture, which is brittle fracture, is likely to occur suddenly after a period of use. Therefore, for the purpose of improving properties against delayed fracture, that is, for the purpose of improving delayed fracture resistance, high-strength bolt steels in which temper softening resistance is improved have been pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/00C21D1/18C21D9/00C22C38/50F16B35/00
CPCC21D1/18C21D1/25C21D6/004C21D6/005C21D6/008C21D9/0093C22C38/00C22C38/001C22C38/002C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C22C38/46C22C38/50F16B31/06C22C38/40
Inventor 松本洋介稻田淳千叶政道嬉野欣成加藤令子
Owner KOBE STEEL LTD
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