公开(公告)号：US3805874A

公开(公告)日：1974-04-23

申请号：US23270672

申请日：1972-03-08

Applicant: SAAB SCANIA AB

Inventor： WAHLQVIST H

IPC: B22C9/10 ,  B22D29/00

CPC classification number: B22C9/106

Abstract: The present disclosure relates to a method for forming a canal when moulding a metal block, said canal being defined by a core inserted into the mould. The method involves using a core comprising a tube of powdered or granulated refractory material held together by an organic binding agent, and a rod located within the tube, coating the core with a blacking agent prior to moulding, carrying out the moulding operation and simultaneously combusting the binding agent and leading off gases through the core, and finally removing the rod and clearing away the remnants of the tube in the canal formed. The disclosure also provides a core suitable for use in said method.

Abstract translation: 本公开涉及一种在模制金属块时形成管道的方法，所述管道由插入模具中的芯限定。 该方法包括使用包含由有机粘合剂保持在一起的粉末或颗粒状耐火材料管的芯和位于管内的棒，在成型之前用遮盖剂涂覆芯，进行模制操作并同时燃烧 粘合剂和引出的气体通过芯体，最后移除杆，并清除管中形成的管道中的残余物。 本公开还提供了适用于所述方法的核心。