公开(公告)号：US20160031014A1

公开(公告)日：2016-02-04

申请号：US14779492

申请日：2013-12-11

Applicant: SINTOKOGIO, LTD.

Inventor： Masayuki ISHIKAWA ,  Naoya TANUMA ,  Tomohiro TOGARI

IPC: B22F9/10

CPC classification number: B22F9/10

Abstract: A method and device for producing shots are provided where the yield is improved. In a space (5) for forming molten drops, which space is surrounded by water (1) in a tank (20), by a cover (3) to cover an area surrounding a disc (2) that is located above the water and rotates, and by a tundish (4) that penetrates through the cover, a gas is discharged though an opening (6) that is formed in the cover and the film (9) of the water is formed on the inner surface of the cover. The molten metal (10) flows through the hole (11) in the bottom of the tundish to be supplied onto the rotating disc. The molten drops are formed by centrifugal force from the molten metal that has been supplied to the disc. Then the molten drops are caused to collide with the film of the water on the inner surface of the cover, to be divided into the droplets that are smaller than the molten drops. The droplets are cooled and solidified.

Abstract translation: 提供了提高产量的方法和装置。 在用于形成熔融液滴的空间（5）中，所述空间被水（1）在罐（20）中包围的空间中，通过盖（3）覆盖位于水上方的盘（2）周围的区域，以及 并且通过穿过盖的中间包（4），通过形成在盖中的开口（6）排出气体，并且水的膜（9）形成在盖的内表面上。 熔融金属（10）流过中间包底部的孔（11），供给到转盘上。 熔滴由来自已经供应到盘的熔融金属的离心力形成。 然后使熔滴与盖的内表面上的水膜碰撞，分成比熔滴小的液滴。 将液滴冷却并固化。

公开(公告)号：US20210069864A1

公开(公告)日：2021-03-11

申请号：US16981460

申请日：2019-03-08

Applicant: SINTOKOGIO, LTD.

Inventor： Yuto KATO ,  Masayuki ISHIKAWA ,  Naoya TANUMA ,  Hayato TANIGUCHI

IPC: B24C11/00 ,  B22F1/00 ,  C22C38/02 ,  C22C38/04

Abstract: The present disclosure relates to a shot used for blast processing, the shot being made of an iron-based alloy containing C: 0.20 to 0.50% by mass, Si: 0.50 to 1.10% by mass, and Mn: 0.50 to 1.15% by mass as additive elements, in which a mass ratio of C to Si is 0.30 to 0.75, a mass ratio of C to Mn is 0.30 to 0.75, and a mass ratio of Si to Mn is 0.70 to 1.60, and a Vickers hardness of the shot is HV 400 to 800.

公开(公告)号：US20190032176A1

公开(公告)日：2019-01-31

申请号：US16071633

申请日：2016-10-17

Applicant: SINTOKOGIO, LTD.

Inventor： Naoya TANUMA ,  Hayato TANIGUCHI

IPC: C22C38/18 ,  B24C1/10 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D9/00 ,  C21D6/00 ,  C09K3/14

Abstract: A cast steel shot media for performing a blasting treatment, including, at a weight ratio, 0.8% or more and 1.2% or less of C, 0.35% or more and 1.2% or less of Mn, and 0.4% or more and 1.5% or less of Si, in which a remainder has a hyper-eutectoid composition including Fe and inevitable impurities, and the cast steel shot media has a structure having a fine pearlite structure as a main constituent.