초록 ▼

Wear resistors adapted for use in wear parts comprising steel castings for replaceable attachment to snow plows, road machinery equipment, agriculture, and construction excavator teeth. The wear castings provide a replaceable member for wear affected parts of equipment used for cutting, scraping, di

Wear resistors adapted for use in wear parts comprising steel castings for replaceable attachment to snow plows, road machinery equipment, agriculture, and construction excavator teeth. The wear castings provide a replaceable member for wear affected parts of equipment used for cutting, scraping, digging, plowing, etc. Each replaceable wear part can comprise a hard, impact resistant metal of high shear strength having at least one cavity filled with an abrasion resistant weldment or resistor. The abrasion resistant weldment can be placed proximal to the wear edges or wear surfaces of the expendable and replaceable wear parts.

대표청구항 ▼

I claim: 1. An expendable wear part adapted for replaceable attachment, comprising: a wear part comprising a unified steel casting having a mounting surface and a wear surface; said wear surface having at least a first casted cavity including a length extending along and integral with said wear sur

I claim: 1. An expendable wear part adapted for replaceable attachment, comprising: a wear part comprising a unified steel casting having a mounting surface and a wear surface; said wear surface having at least a first casted cavity including a length extending along and integral with said wear surface; said at least first cavity including an abrasion-resistant reconstitutable welding deposit therein whereby abrasion action on said wear surface is reduced by said deposit; said deposit comprising a weldment material selected from the group consisting of chrome carbide, vanadium carbide, and tungsten carbide; said weldment material having a higher hardness than said steel casting for extending the service life of said wear surface of said wear part; said welding deposit in at least said first cavity initially overfills said cavity forming a substantially bulbous deposit extending outwardly from said wear surface of said casting; said bulbous deposit having a surface area, wherein said bulbous deposit surface area extending initially in a co-linear arrangement with said wear surface and wherein said welding deposit extending co-planar with said wear surface at a time of reconstituting said weldment over substantially same said length; and, wherein substantially all of said deposit surface area exposed to the abrasive action. 2. The wear part in accordance with claim 1 further including a second cavity substantially aligned with said at least first cavity, said second cavity including said abrasion-resistant welding deposit therein. 3. The wear part in accordance with claim 2, wherein said first and said second cavities are substantially parallel to one another. 4. The wear part in accordance with claim 3, wherein said first and said second cavities are spaced from one another and run along the majority of the length of said wear surface of said casting. 5. The wear part in accordance with claim 4, wherein the wear part includes a thickness; and, said first and said second cavities include a depth wherein said depth is at least one half of said thickness of said wear part. 6. The wear part in accordance with claim 4, wherein the wear part includes a thickness; and, said first and said second cavities include a depth wherein said depth is substantially the same as said thickness of said wear part. 7. The wear part in accordance with claim 5, wherein said wear part comprises a plow shoe, a set of two said plow shoes are provided for attachment to the opposite ends of a snow plow attachment frame whereby said wear surface is in sliding engagement with a road surface during use thereof. 8. An expendable wear part adapted for replaceable attachment, comprising: a wear part comprising a unified steel casting having a mounting surface and a wear surface; said wear part including a direction of travel when in an engaged position; said steel casting including a wear surface having a plurality of casted cavities extending along and integral with said wear surface; said plurality of cavities each having an abrasion-resistant welding deposit therein; said welding deposit having a higher hardness than said steel casting; wherein said welding deposits in said plurality of cavities overfills the cavities forming substantially bulbous deposits adjacent to and extending outwardly from said wear surface of said casting, said deposits longitudinally aligned with said direction of travel; and, said plurality of cavities are spaced from one another and run along the majority of the length of said wear surface of said casting wherein substantially all of said deposit surface area is exposed to the abrasive action. 9. The wear part in accordance with claim 8, wherein said deposit comprising a weldment material selected from the group consisting of chrome carbide, vanadium carbide, and tungsten carbide. 10. The wear part in accordance with claim 9, wherein said plurality of cavities are substantially parallel to one another. 11. The wear part in accordance with claim 8, wherein the wear part includes a thickness; and, said plurality of cavities include a depth wherein said depth is at least one half of said thickness of said wear part. 12. The wear part in accordance with claim 8, wherein the wear part includes a thickness; and, said plurality of cavities include a depth wherein said depth is substantially the same as said thickness of said wear part. 13. The wear part in accordance with claim 11, wherein said wear part comprises a plow shoe whereby a set of two said plow shoes are provided for attachment to the opposite ends of a snow plow attachment frame for sliding engagement with a road surface. 14. A method for extending the life of an expendable wear part adapted for replaceable attachment, comprising: casting a steel wear part having a plurality of casted cavities extending longitudinally along and integral with a wear surface of said wear part, said cavities including lengths aligned with a direction of travel of said wear part when said wear part is in an engaged and use position; welding a series of abrasion resistant deposit layers in said cavities wherein said layers are spaced from one another and run along the majority of the length of said wear surface of said casting and wherein said deposit layers having a higher hardness than said steel casting wear part; wherein said welding said deposit layers further include overfilling said cavities thereby forming bulbous deposits adjacent along and extending outwardly from said cavities of said wear surface; wherein said wear part includes a thickness having a wear replacement line between said wear surface and a mounting surface; wherein said wear line positioned at a predetermined useable limit of said wear part; and, reconstituting said deposit layers over substantially same said lengths before said wear surface reaches said wear line. 15. The method in accordance with claim 14, wherein said deposit layers forming substantially parallel bulbous deposits. 16. The method in accordance with claim 15, wherein said deposit layers comprising a weldment material selected from the group consisting of chrome carbide, vanadium carbide, and tungsten carbide. 17. The method in accordance with claim 15, wherein said welding further includes depositing said layers one on top of another wherein each individual layer running along substantially the length of said cavity. 18. A method for extending the life of an expendable wear part adapted for replaceable attachment, comprising: casting a unified steel wear part having a plurality of casted cavities extending longitudinally along a wear surface of said wear part, said cavities aligned with a direction of abrasive travel of said wear part when said wear part is in an engaged and use position; and, welding a series of abrasion resistant deposit layers in said cavities wherein said layers are spaced from one another and run along the majority of the length of said wear surface of said casting and wherein said deposit layers having a higher hardness than said steel casting wear part; said welding said deposit layers further include overfilling said cavities thereby forming substantially parallel bulbous deposits adjacent along and extending outwardly from said wear surface of said casting in a non-coplanar arrangement; wherein said deposit layers wear from said non-coplanar arrangement with said wear surface to a co-planar arrangement with the majority of said wear surface; and, reconstituting said deposit layers from said co-planar arrangement with said wear surface to another non-coplanar arrangement with said wear surface. 19. An expendable wear part adapted for replaceable attachment, comprising: a wear part comprising a unified steel casting having a mounting surface and a wear surface; said wear part including a direction of travel when in an engaged position; said steel casting including a wear surface having a plurality of casted cavities extending along said wear surface; said plurality of cavities each having an abrasion-resistant welding deposit therein; said welding deposit having a higher hardness than said steel casting; wherein said welding deposits in said plurality of cavities overfills the cavities forming substantially parallel bulbous deposits adjacent to and extending outwardly from said wear surface of said casting, said deposits longitudinally aligned with said direction of travel; said plurality of cavities are spaced from one another and run along the majority of the length of said wear surface of said casting; and, said welding deposits comprise initially a majority of said wear surface and then subsequently wear to a minority of said wear surface. 20. An expendable wear part adapted for replaceable attachment, comprising: a wear part comprising a singular unified steel casting component having a mounting surface and a wear surface; said steel casting including a wear surface having a plurality of casted cavities extending along said wear surface; said plurality of cavities each having an abrasion-resistant welding deposit therein; said welding deposit having a higher hardness than said steel casting; wherein said welding deposits in said plurality of cavities overfills the cavities forming bulbous deposits adjacent along and extending outwardly from said wear surface of said casting; said plurality of cavities are spaced from one another and run along the majority of the length of said wear surface of said casting; and, initially said wear surface consists substantially of said welding deposits and then consequently, after wear, said welding deposits comprise a minority of said wear surface.