On December 12, 2021, The Cast Iron Sub-Technical Committee of National Technical Committee on Casting of Standardization Administration (SAC/TC54/SC2) held the review meeting of the two industry standards of "Inoculating Cored Wire for Cast iron" and "Sulfur Enhancer for Casting" in Changzhou, Jiangsu Province. The inspection will be chaired by professor Wang Zehua of Hohai University, chairman of the Cast iron technical Committee of the National Casting Committee. From the car qi shuyan locomotive vehicle technology research institute Co., Ltd., hohai university, jiangsu steel sharp precision Machinery Co., Ltd., liyang SONY mechanical casting Co., Ltd., yuzhou city henli to new material Co., Ltd., henan yu new material Co., Ltd., Shandong Longji Machinery Co., ltd. in 3517, the international China rubber products Co., Ltd., wuhu emerging casting pipe Co., Ltd., liaoning Xinfeng industrial Co., Ltd. and other units of 16 experts attended the inspection meeting.
"Inoculation Cored Wire for Cast Iron" is the fourth batch of industry standard Preparation and revision Plan in 2019 issued by the Ministry of Industry and Information Technology (Ke Han [2019] No. 276), "Sulfur Additive for Casting" is the first batch of industry standard preparation and revision Plan in 2020 issued by the Ministry of Industry and Information Technology (Ke Han [2020] No. 114). The two industry standards were drafted by Yuzhou Henglilai New Materials Co., Ltd. and Henan Yuzhongxin Materials Co., LTD.
The establishment of the standards of "Inoculation cored wire for Cast iron" and "Sulfur additive for casting" has filled the blank of the industry standard. The standards stipulate the quality indexes, testing methods and inspection rules of these two auxiliary materials, providing a technical basis for the quality control of the production enterprises and the quality acceptance of the purchasing enterprises.
For resource conservation and environmental protection, iron and steel scrap recycling use increase again, smelting energy into electrical energy by coke, the sulfur element was oxidized in the process of iron and steel scrap recycling and losses, the lower and lower sulfur content, low sulfur content affect the performance of the steel for the sulfur content in the steel material control in a reasonable range, In the production of high sulfur steel, free cutting steel and gray cast iron, the sulfur content should be appropriately increased, therefore, out of the demand of market and industry, sulfur additive appeared. According to the needs of industrial development, "sulfur enhancer for casting" was formulated. The formulation of standard has important guiding significance for the production and application of sulfur enhancer.
Due to the continuous improvement of cast iron inoculation treatment process, the application of feeding line method inoculation treatment method controlled by PLC increased year by year. This inoculation method is accepted and used by the majority of casting enterprises with its environmental protection, stability and high quality process characteristics. As the key part of the process of raw materials, dosage of packet core in the casting industry is becoming more and more big, to standardize market behavior, guarantee the quality of inoculation packet core, and the cast iron with inoculation packet core industry standards, standards for packet core production and quality inspection, scientific and rational choice for the user packet core specification, type to provide technical basis.
The review will be on the two industry standards submitted for review carefully review, focus on the main technical content of the standard submitted for review, the main technical indicators of the verification of the reasonableness of the technical performance of the review. The non-standard chapter and article Settings in the standard submission shall be adjusted and modified according to the rules of GB/T 1.1-2020.
The meeting required the drafting unit to seriously modify according to the review opinions put forward by the review meeting, the drafting unit to seriously prepare preparation instructions, supplement the necessary verification data and verification instructions, as soon as possible to form a standard for approval and approval of the annex, submitted to the secretariat of the National Casting Bid Committee for review. The materials submitted must be complete, detailed and accurate.
The two standards were unanimously adopted by the members attending the meeting.
