Method of making an assembly having a cast iron subassembly

• US 10,569,328 B2
• Filed: 07/30/2014
• Issued: 02/25/2020
• Est. Priority Date: 07/30/2014
• Status: Active Grant

• Current Assignee: ArvinMeritor Technology LLC (Meritor, Inc. (Nevada))
• Original Assignee: ArvinMeritor Technology LLC (Meritor, Inc. (Nevada))
• Inventors: Melekian, Joseph
• Primary Examiner(s): Patel, Devang R
• Application Number:
  US14/446,709
• Publication Number:
  US 20160031005A1
• Time in Patent Office: 2,036 Days
• Field of Search: None
• CPC Class Codes: B22D 19/00 Casting in, on, or around objects which form part of the product B22D23/04 takes precedence; alumino-thermic welding B23K23/00; coating by casting molten material on the substrate C23C6/00
• CPC Class Codes: B22D 19/16 for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills casting compound ingots B22D7/02
• CPC Class Codes: B23K 20/08 Explosive welding
• CPC Class Codes: B23K 2103/04 Steel or steel alloys
• CPC Class Codes: B23K 2103/06 Cast-iron alloys
• CPC Class Codes: B23K 2103/18 Dissimilar materials
• CPC Class Codes: B23K 35/0255 for use in welding B23K35/0205 takes precedence
• CPC Class Codes: B23K 35/0261 Rods, electrodes, wires
• CPC Class Codes: B23K 35/30 with the principal constituent melting at less than 1550 degrees C
• CPC Class Codes: B23K 35/3053 Fe as the principal constituent
• CPC Class Codes: B23K 35/306 with C as next major constituent, e.g. cast iron
• CPC Class Codes: B23K 9/232 of different metals
• CPC Class Codes: B60B 35/00 Axle units; Parts thereof steerable vehicle stub axles B62D ; Arrangements for lubrication of axles
• CPC Class Codes: F16D 2200/0013 Cast iron
• CPC Class Codes: F16D 2250/0007 Casting
• CPC Class Codes: F16D 2250/0015 around inserts
• CPC Class Codes: F16D 65/10 Drums for externally- or internally-engaging brakes

Abstract

A method of making an assembly having a cast iron subassembly. The method may include providing a steel insert having a first joining surface and bonding the steel insert to a cast iron part to form a cast iron subassembly such that the first joining surface may be an exterior surface of the cast iron subassembly.

Claims

1. A method of making an assembly having a cast iron subassembly, comprising:

providing a steel insert having a first joining surface;

bonding the steel insert to a cast iron part to form the cast iron subassembly such that the first joining surface is an exterior surface of the cast iron subassembly;

providing a steel component having a second joining surface;

abutting the second joining surface with the first joining surface; and

joining the cast iron subassembly to the steel component proximate the first and second joining surfaces by welding, wherein the weld obtained by welding generates a weld pool, an area immediately adjacent to the weld and the weld pool defines a fusion zone and a heat affected zone, the heat affected zone does not extend to the cast iron part, and the cast iron of the cast iron part is not converted to white cast iron.

2. The method of claim 1 wherein the weld does not extend to the cast iron part.

3. The method of claim 1 wherein the cast iron part is cast around the steel insert.

4. The method of claim 1 wherein the steel insert is configured as a ring.

5. The method of claim 1 wherein the cast iron part is made of ductile cast iron.

6. The method of claim 1 wherein the steel component is a cast steel bracket.

7. The method of claim 1 wherein the steel insert protrudes from the cast iron part.

8. The method of claim 1 wherein welding produces the heat affected zone in the steel insert and the steel component.