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Alloy vessel plate production method thereof

A production method and container technology, applied in the field of container plate and its production, can solve the problems of high smelting cost and reduced strength, achieve the effect of reducing production cost, reducing smelting cost, and meeting product use requirements

Inactive Publication Date: 2011-07-20
QINHUANGDAO SHOUQIN METAL MATERIAL +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] ① During the smelting process, a relatively large amount of alloying elements such as Cr and Mo are added, and the smelting cost is high. How to adjust the amount of alloy added is the key to reducing costs
[0005] ③Determined by the use environment, the steel plate needs to be annealed after welding, and the strength will decrease after annealing

Method used

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  • Alloy vessel plate production method thereof
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[0017] Example ①: Steel plate thickness: 22mm, continuous casting billet size: 250*2000*2700mm, billet heating time 260 minutes, furnace temperature 1238°C; two-stage rolling, starting rolling temperature 1160°C, finishing rolling temperature 830°C-840°C ℃; cooling rate 10℃ / S, final cooling temperature 680℃. The normalizing temperature of the steel plate is 920°C, the normalizing time is 48 minutes, the tempering temperature is 700°C, and the tempering time is 68 minutes.

[0018] Example ②: Steel plate thickness: 65mm, continuous casting slab size: 250*2000*2900mm, slab heating time 262 minutes, furnace temperature 1240°C; two-stage rolling, start rolling temperature 1160°C, finish rolling temperature 830°C-840°C ℃; cooling rate 5℃ / S, final cooling temperature 690℃. The normalizing temperature of the steel plate is 920°C, the normalizing time is 121 minutes, the tempering temperature is 630°C, and the tempering time is 180 minutes.

[0019] Actual Ingredients:

[0020] ...

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Abstract

The present invention relates to an alloy vessel plate and a production method thereof; the main components of the vessel plate are controlled as the following targets by weight percentage: 0.15-0.17 percent of C, 0.2-0.3 percent of Si, 0.4-0.6 percent of Mn, 0.8-1.0 percent of Cr, 0.45-0.55 percent of Mo, 0.02-0.04 percent of Al, and the remaining is Fe and unavoidable impurities. The alloy pressure vessel plate and the production method thereof are particularly suitable for 15CrMOR smelting, billet heating, rolling cooling and heat treatment normalizing and tempering production technologies, after the technologies are adopted, the production cost is low, machine hour yield is high, the toughness and weld simulation performances of the final products are good, thereby reducing the production cost and meeting the using requirements of the products.

Description

technical field [0001] The invention relates to a container plate and a production method thereof, and in particular provides a smelting, steel rolling and heat treatment technology of an alloy pressure vessel plate 15CrMoR. Background technique [0002] Alloy pressure vessel plate 15CrMoR, the delivery state is normalized and tempered, the main problems in the development and production process: [0003] ① During the smelting process, a relatively large amount of alloying elements such as Cr and Mo are added, and the smelting cost is high. How to adjust the amount of alloy added is the key to reducing costs. [0004] ②The thickness range is 8-80mm, and the strength, plasticity and impact toughness indexes of steel plates with different thicknesses fluctuate greatly. [0005] ③Determined by the use environment, the steel plate needs to be annealed after welding, and the strength will decrease after annealing. [0006] The alloy pressure vessel plate 15CrMoR mainly adds all...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/22C21C5/30C21C7/10C21C7/076C21D8/02C21D1/28C21D1/34C21D1/18B21B37/74
CPCY02P10/20
Inventor 张学峰何元春隋鹤龙王东柱张跃飞
Owner QINHUANGDAO SHOUQIN METAL MATERIAL