TH34131B - Using thermal spraying of brazing materials for the manufacture of heat transfer equipment - Google Patents

Abstract

DC60 (01/03/54) This invention relates to the method of manufacturing and coating of heat transfer tubes for equipment. heat exchangers such as car radiators The pipes are coated with a cementitious material by spraying. by heat, such as plasma masking or wire arc masking. Subsequently, the coated pieces are It undergoes heat annealing to braze the tubes to the fins and to the bundle tubes to make the formation. The heat exchanger is complete. This invention relates to the method of manufacturing and coating of heat transfer tubes for equipment. heat exchangers such as car radiators The pipes are coated with a cementitious material by spraying. by heat, such as plasma masking or wire arc masking. Subsequently, the coated pieces are It undergoes heat annealing to braze the tubes to the fins and to the bundle tubes to make the formation. The heat exchanger is complete.

Claims (9)

1. Methods of pipe forming for the combined heat exchanger. To provide a sheet of metal or alloy with a base and two ends. End folds of the sheet for leg formation with opposites and straight sides. Cross with the base of the plate The ends of the sheets are folded further together to form a pair of fluid passes. Thermal spray using plasma or arc wire with a binder that can be bonded. Adhesion to the material of the plate without flux between the opposite sides of the legs and between the bases and The sides of the legs that are opposite each other, the base of the plate and the heating of the plate. And the binder is sufficient to melt the material and it adheres to the pin. And to connect the inbound together And to the base of the plate to Forming a pipe 2. Method of claim 1 where the binder is in powder or wire form. 3. Method of claim No. 1, where the binder is in the form of a paste consisting of metal powder or alloy, binder and carrier. 4. Method of holding Article 1 where the bonding material is in the form of a foil that has been placed down. Go between the opposite sides of the leg and between the base and the side of the leg opposite the base of the plate. 5. Method of claim 1, where the sheet is formed from a material chosen from a group containing aluminum, aluminum alloy, copper, copper alloys. Or stainless steel 6. Method of claim 1, where sheets are formed from material other than copper or copper alloy. 7.Method of claim 1, whereby a bonded sheet material is a metal or alloy compatible with Sheet metal or alloy 8. Method of claim 1, where the plate is heated to above the melting temperature. Of not more than approximately 20% of the weld material for the formation of seams (multiple joints). 9.Method of claim 2, where the solder material is put on by the heat gun 1 0. Method of claim 1, where the binder material is put into an inert atmosphere 1 1. Method of claim 1, where heating is performed in the furnace 1. 2. Method of claim 1, where a number of pipes are provided And get connected With one or more combined pipes that have been placed in the operating position for directing or receiving Flows from the fluid passage to form the heat exchanger 1 3. Method of claim 12, where the binder is put onto the collective pipe by thermal spraying 1. 4. Method of claim 1, where a sheet is composed of copper or copper alloy, and The brazing material consists of a copper alloy that has been formulated to provide a Melts below that temperature of plate 1 5. Method of claim 1 where the pipe is a flat pipe 1 6.Method of claim 1, where thermal spraying is performed on the hose reel 1. 7.Methods of manufacturing auto radiators by providing a heat exchanger with a through One or more fluids that have been formed in accordance with the Clause 1 method. 8. Methods of manufacturing automobile radiators by forming a number of heat exchanger tubes. One comes up in accordance with the method of claim 1 and the connection of the pipes in such a way that the connection of Flow to the formation of the car radiator up 1 9. Methods of manufacturing automobile radiators by forming a number of heat exchanger tubes. One came up according to the method of Clause 1 2. 0. In the method for the manufacture of heat exchangers Which improvements included By forming one or more fluid passages in the heat exchanger according to the method Clause 1