Method for coating a component of an agricultural concave with a high hardness material

Patent metadata

Field	Value
Publication number	US-10028443-B2
Application number	US-201715684545-A
Country	US
Kind code	B2
Filing date	Aug 23, 2017
Priority date	Jun 4, 2015
Publication date	Jul 24, 2018
Grant date	Jul 24, 2018

Abstract

A method of coating an agricultural component including the step of providing a concave component. The concave component has a crop engaging surface. The method also includes the steps of applying a high hardness coating on the crop engaging surface, and bonding the applied high hardness coating to the crop engaging surface by heating the applied high hardness coating to a temperature of at least 1900° F.

First claim

What is claimed is:

1. A method of coating an agricultural component, comprising:
providing a concave component, said concave component having a crop engaging surface;
applying a high hardness coating on said crop engaging surface by a sprayer; and
bonding said applied high hardness coating to said crop engaging surface by heating said applied high hardness coating to a temperature of at least 1900° F. by placing said concave component with said applied high hardness coating in a furnace.

2. The method according to claim 1 , further comprising the step of hardening at least a portion of said concave component including said crop engaging surface at least one of before and after said applying step by an induction hardening process.

3. The method according to claim 2 , wherein said high hardness coating is applied by said sprayer to said crop engaging surface after said hardening step.

4. The method according to claim 1 , wherein said high hardness coating is applied by said sprayer to said crop engaging surface as a powder, said powder comprising at least 35 mass % tungsten carbide.

5. The method according to claim 4 , wherein said powder comprises said at least 35 mass % tungsten carbide and a remainder 65 mass % of said powder is a metallic matrix.

Assignees

• Cnh Ind America Llc

Inventors

• Haus Thomas P
• Kemmerer Benjamin
• Flickinger Wayne

Classifications

• A01F12/26

  Multi-part threshing concaves · CPC title

• A01F12/24 Primary

  One-part threshing concaves · CPC title

• C21D1/18

  Hardening (C21D1/02 takes precedence); Quenching with or without subsequent tempering (quenching devices C21D1/62) · CPC title

• A01F12/16

  Safety devices · CPC title

• C23C4/10

  Oxides, borides, carbides, nitrides or silicides; Mixtures thereof · CPC title