Saltcore for die-casting with aluminum and manufacturing method therefor

Patent metadata

Field	Value
Publication number	US-2018178271-A1
Application number	US-201715582293-A
Country	US
Kind code	A1
Filing date	Apr 28, 2017
Priority date	Dec 23, 2016
Publication date	Jun 28, 2018
Grant date	—

Abstract

Provided herein are a saltcore for casting with aluminum and a manufacturing method thereof, and more particularly, a saltcore and a manufacturing method thereof capable of reducing shrinkage while satisfying strength during die-casting by including at least one cation of K + , Na + and Mg 2+ and at least one anion of Cl − and C0 3 2− , wherein a saltcore for casting with aluminum may include at least one cation of K + , Na + and Mg 2+ and at least one anion of Cl − and C0 3 2− .

First claim

What is claimed is:

1 . A saltcore for casting with aluminum comprising:
at least one cation of K + , Na + and Mg 2+ and at least one anion of Cl − and CO 3 2− .

2 . The saltcore for casting with aluminum of claim 1 , wherein the K + is 35 to 40 mol %, the Na + is 110 to 130 mol %, and the Mg 2+ is more than 0 mol % and less than 1 mol %, the Cl − is more than 35 mol % and less than 42 mol %, and the CO 3 2− is 55 to 65 mol %.

3 . The saltcore for casting with aluminum of claim 1 , wherein the K + or Mg 2+ is bonded to the Cl − , and the Na + is bonded to the CO 3 2− .

4 . The saltcore for casting with aluminum of claim 3 , wherein the KCl is 35 to 40 mol %, the Na 2 CO 3 is 55 to 65 mol %, and the MgCl 2 is more than 0 mol % and less than 1 mol %.

5 . A saltcore for casting with aluminum, comprising:
at least one cation of K + and Na + , at least one anion of Cl − and CO 3 2− , and dolomite.

6 . The saltcore for casting with aluminum of claim 5 , wherein the K + is 35 to 40 mol % or the Na + is 110 to 130 mol %, and the Cl − is 35 to 40 mol % or the CO 3 2− is 55 to 65 mol %, and the dolomite is more than 0 wt % and less than 1 wt % with respect to the entire weight.

7 . The saltcore for casting with aluminum of claim 5 , wherein the K + is bonded to the Cl − , and the Na + is bonded to the CO 3 2− .

8 . The saltcore for casting with aluminum of claim 7 , wherein the KCl is 35 to 40 mol %, the Na 2 CO 3 is 55 to 65 mol %, and the dolomite is more than 0 wt % and less than 1 wt % with respect to the entire weight.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Lee Ji-Yong
• Lee Cheol-Ung

Classifications

• B22C9/105 Primary

  Salt cores · CPC title

• B22C1/08 Primary

  for decreasing shrinkage of the mould, e.g. for investment casting · CPC title

• B22C1/00

  Compositions of refractory mould or core materials; Grain structures thereof (refractory materials in general C04B35/00); Chemical or physical features in the formation or manufacture of moulds · CPC title

• B22C1/02

  characterised by additives for special purposes, e.g. indicators, breakdown additives · CPC title

• B22D17/00

  Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure · CPC title