Method for cleaning carbon steel casting with weight smaller than 5 tons

• Main Authors: TIAN CHENGGANG, YAN XINFEI, LI SHAOYU, YE JUN, FENG ZHOURONG, TANG ZHONGXUE, LUO YONGJIAN, YANG JIAN, MA WENZHI
• Format: Patent
• Language: English
• Published: 07.10.2015
• Subjects: CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING

The invention relates to a method for cleaning carbon steel casting, in particular to a method for cleaning a carbon steel casting with the weight smaller than 5 tons. The method is characterized by including the steps that high-temperature knockout is firstly carried out; the casting is instantly lifted to a shakeout area after high-temperature knockout is carried out, large sand lumps on the surface of the casting are smashed to fall off; when the casting is cooled to 300 DEG C to 350 DEG C, the casting is lifted to a riser cutting area, and burnt-on sand and porcelain tubes which can influence riser and pouring gate cutting are eliminated; after cleaning of the burnt-on sand and the porcelain tubes is completed, the temperatures of the cutting part and the other parts of the casting are measured respectively, and riser cutting is carried out when the temperature of the cutting part is higher than 150 DEG C, and the temperatures of the other parts are larger than 100 DEG C; after riser cutting is finished, the casting is transferred to the interior of a heat treatment furnace, and furnace charging is carried for performance heat treatment. The method is unique, and the production period is shortened; the problem that riser cutting needs to be carried out through preheating after knockout and shakeout are carried out on the steel casting is solved, and the production cost is reduced.