METHOD OF MAKING AN ASSEMBLY HAVING A CAST IRON SUBASSEMBLY

• US 20160031005A1
• Filed: 07/30/2014
• Published: 02/04/2016
• 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
• Granted Patent: US 10,569,328 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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 a 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.

2. The method of claim 1 wherein cast iron subassembly is joined to the steel component by welding.

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

providing a first steel insert having a first faying surface;

casting a first cast iron part about the first steel insert to make a first cast iron subassembly;

providing a second steel insert having a second faying surface;

casting a second cast iron part about the second steel insert to make a second cast iron subassembly;

aligning the first faying surface with the second faying surface; and

welding the first cast iron subassembly to the second cast iron subassembly along the first faying surface and the second faying surfaces such that the weld does not extend to and does not carburize the first cast iron part and the second cast iron part.

9. The method of claim 8 wherein the first cast iron subassembly and the second cast iron subassembly are axle housings.

10. The method of claim 8 wherein the first cast iron subassembly is welded to the second cast iron subassembly such that the first cast iron part and the second cast iron part are not converted to white cast iron.

11. The method of claim 8 wherein the first cast iron part is made of ductile cast iron.

12. The method of claim 8 wherein the first cast iron part is made of gray cast iron.

13. The method of claim 8 wherein the first steel insert is substantially linear.

14. The method of claim 8 wherein the first steel insert has a first lateral surface that extends from the first faying surface into the first cast iron part, wherein the first lateral surface has a length greater than the first faying surface.

15. The method of claim 8 wherein the assembly is a brake drum assembly.

16. The method of claim 8 wherein the first steel insert protrudes from the first cast iron part and the second steel insert protrudes from the second cast iron part.

17. The method of claim 16 wherein the first cast iron subassembly is welded to the second cast iron subassembly where the first steel insert protrudes from the first cast iron part and where the second steel insert protrudes from the second cast iron part.

18. The method of claim 17 wherein the weld is does not engage the first cast iron part.

19. The method of claim 18 wherein the weld does not engage the second cast iron part.