Try to use A514 grade Q quenched and tempered steel high-quality alkaline covered electrode as much as possible, and don't use inferior electrode to save money. According to the theory of chromium poor, chromium carbide will be precipitated on the upper edge of the grain boundary of the weld and heat affected zone when the A514 grade Q quenched and tempered steel temperature range is between 450 ℃ and 850 ℃, resulting in chromium poor grain boundary, which is insufficient to resist corrosion.
The basic principle of A514 grade Q quenched and tempered steel, heat treatment of steel: put the metal workpiece in a certain medium and heat it to a suitable temperature, keep it in this temperature for a certain time, and then cool it at different speeds. Objective: to obtain the desired structure and properties by means of heating, heat preservation and cooling, so as to make the metal workpiece have the required mechanical, physical and chemical properties.
The company was established in 2000, covering an area of more than 4,500 acres. It has fixed assets of 200 million yuan, and employs more than 1,200 people. It has now formed coking, sintering, white ash, pellets, ironmaking, A514 grade Q quenched and tempered steel steelmaking, steel rolling, oxygen production, gas and waste heat The complete circular economy industrial chain including power generation, comprehensive utilization of slag, soot and dust treatment, sewage treatment and recycling, etc. It mainly produces hot-rolled steel plates and A514 grade Q quenched and tempered steel carbon structural steels, high-quality carbon structural steels, low-alloy high-strength steels, medium and wide-band steels for cold-rolled stamping, and hot-rolled coils.
Due to the low level of futures trading, the business sentiment is slightly pessimistic. Affected by the market downturn, the purchasing power of downstream A514 grade Q quenched and tempered steel users has decreased, and the mentality of looking down is gradually rising. Some businesses give up profits to promote transaction. The market trading atmosphere is still relatively light, the steel demand release is slow, and the terminal delivery capacity is weak. In addition, the market has been rising for two days, the downstream fear of heights is strong. The market has entered consolidation stage again. Considering the low inventory pressure, it is expected that A514 grade Q quenched and tempered steel prices will fall down and adjust in some cases tomorrow.
