CN112091537A - Preparation method of copper-steel composite seamed pipe - Google Patents
Preparation method of copper-steel composite seamed pipe Download PDFInfo
- Publication number
- CN112091537A CN112091537A CN202010826321.2A CN202010826321A CN112091537A CN 112091537 A CN112091537 A CN 112091537A CN 202010826321 A CN202010826321 A CN 202010826321A CN 112091537 A CN112091537 A CN 112091537A
- Authority
- CN
- China
- Prior art keywords
- copper
- pipe
- steel
- steel composite
- circular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention relates to the technical field of air conditioning equipment articles, in particular to a preparation method of a copper-steel composite seamed pipe, which comprises the following steps: manufacturing a steel substrate into a steel plate, and manufacturing a copper substrate into a copper plate; step (B): stacking steel plates and copper plates, and stamping the steel plates and the copper plates into copper-steel composite plates; step (C): bending and rolling the copper-steel composite plate to form an arc pipe; step (D): two sides of the circular arc pipe are close to each other in opposite directions and are extruded and welded to form a circular pipe; a step (E): and (4) carrying out copper supplementing treatment on the welding position of the circular tube to form the copper-steel composite seamed tube. According to the preparation method of the copper-steel composite welded pipe, the steel plate and the copper plate are punched into the copper-steel composite plate, the copper-steel composite plate is bent into the arc pipe, the arc pipe is extruded and welded into the circular pipe, and then copper supplement treatment is carried out to obtain the copper-steel composite welded pipe.
Description
Technical Field
The invention relates to the technical field of air conditioning equipment articles, in particular to a preparation method of a copper-steel composite seamed pipe.
Background
The air conditioner and the connecting pipe fitting for the air conditioner compressor are mainly provided with an air conditioner compressor exhaust pipe, an air suction outer pipe, a connecting pipe, an air conditioner compressor liquid storage device exhaust pipe and an air conditioner pipe.
The existing exhaust pipe has 2 structures. The first is a pure copper tube, and is welded with an upper cover (SPHD material) through flame brazing. The material has high cost and is easy to deform, and flame brazing is requiredSilver-containing solder, further increased cost, high flame heating temperature, high energy consumption, and CO2The row is enlarged, the welding efficiency is low, the quality leakage is poor, the flame brazing is easy to cause the overburning phenomenon of the copper pipe, and the strength of the copper pipe is reduced; the second type is a steel base and a copper pipe, and is welded with the upper cover (SPHD material) through flame brazing. Compared with the first sample, the welding process of the sample is changed into resistance welding, and the cost of silver-containing solder is eliminated. The pure copper pipe material has high cost, and the welding of the steel base and the pure copper pipe requires copper-based solder and adopts high-frequency welding or furnace-passing welding, so that the welding process is complicated, and the quality leakage is poor. In addition, when the welding material is subjected to electric resistance welding with the upper cover, the heat is high, the welding material between the steel base and the copper pipe is easy to melt and sink, a hollow hole penetrates through the welding material, and secondary leakage occurs.
The existing outer air suction pipe has 3 structures. The first is steel base and pure copper pipe. The sample material has high cost, needs copper-based welding flux to be welded through furnace welding or high-frequency welding, and has high energy consumption and poor quality leakage. In addition, when the welding material is subjected to electric resistance welding with the upper cover, the heat is high, the welding material between the steel base and the copper pipe is easy to melt and sink, a hollow hole penetrates through the welding material, and secondary leakage occurs. The second is an integrated style of steel and copper plating. The pattern is manufactured by tube processing and electroplating. The pipe material has long adjustment time, more material specifications, complex processing procedures, more quality control items, poor quality and large product size fluctuation. In addition, the electroplating process has great environmental pollution and great quality fluctuation of electroplating strength, thickness and the like. The third is a copper steel composite stamping and drawing forming style. Compared with the first two samples, the cost is greatly reduced, and the quality is stable. But has high requirements on a punch press and a die, short service life of the die and large noise pollution.
The existing liquid storage device air suction and exhaust pipe is a pure copper pipe type and is welded with an upper cover and a lower cover of the liquid storage device through flame brazing by using copper-based welding flux. The material has high cost, high flame heating temperature, high energy consumption and high CO content2The row is enlarged, the welding efficiency is low, the quality leakage is poor, the flame brazing is easy to cause the overburning phenomenon of the copper pipe, and the strength of the copper pipe is reduced.
The existing air-conditioning tubing is pure copper tube type, and is welded with the matching parts through flame brazing. The pattern material has high cost and is heated by flameHigh industrial temperature, high energy consumption, CO2The row is enlarged, the welding efficiency is low, the quality leakage is poor, the flame brazing is easy to cause the overburning phenomenon of the copper pipe, and the strength of the copper pipe is reduced.
Disclosure of Invention
The invention aims to provide a preparation method of a copper-steel composite electric welded pipe, aiming at the defects in the prior art, the copper-steel composite electric welded pipe is obtained by punching a steel plate and a copper plate into the copper-steel composite plate, bending the copper-steel composite plate into an arc pipe, extruding and welding the arc pipe into a circular pipe, and then carrying out copper supplement treatment.
The purpose of the invention is realized by the following technical scheme:
a preparation method of a copper-steel composite seamed pipe comprises the following steps:
step (A): manufacturing a steel substrate into a steel plate, and manufacturing a copper substrate into a copper plate;
step (B): stacking steel plates and copper plates, and stamping the steel plates and the copper plates into copper-steel composite plates;
step (C): bending and rolling the copper-steel composite plate to form an arc pipe;
step (D): two sides of the circular arc pipe are close to each other in opposite directions and are extruded and welded to form a circular pipe;
a step (E): and (4) carrying out copper supplementing treatment on the welding position of the circular tube to form the copper-steel composite seamed tube.
According to the preparation method of the copper-steel composite electric seamed pipe, the steel plate and the copper plate are punched into the copper-steel composite plate, the copper-steel composite plate is bent into the arc pipe, the arc pipe is extruded and welded into the circular pipe, the width of the part, exposed out of the base material, of the surface of the circular pipe is 0.01-10mm after welding, copper supplementing treatment is carried out to obtain the copper-steel composite electric seamed pipe, the outer surface of the copper-steel composite electric seamed pipe is completely covered with copper, the copper-steel composite electric seamed pipe can be suitable for connection of various accessories, the application range is wide, and the applicability is; the invention uses the copper steel composite material to replace pure copper material, so that the pipe has higher strength, good sealing performance, difficult leakage and high mechanical strength. The copper-steel composite seamed pipe of the invention can be applied to household or commercial air conditioner fittings, water purification pipelines and the like. When the pipe is bent to form an arc pipe, the edge on the circumferential side is bent to approach the pipe.
And (C) stamping the copper-steel composite plate at 50-500 KN, wherein the copper-steel composite plate comprises steel and copper materials coated on one side face and two side edges of the steel. By setting a certain punching pressure, the copper plate and the steel plate are tightly attached, and the connection strength of the copper layer and the steel layer is increased. So that one side surface and two side edges of the steel are coated with copper materials, and the outer surface of the subsequently prepared pipe is provided with the copper materials. Specifically, a steel plate is manufactured, and the increased width is adjusted according to the width of the steel plate, which is the same length as the copper plate, to be the manufactured width of the copper plate. The steel plate is placed on a punching machine, the copper plate is placed right above the steel plate, punching equipment is used for punching the overlapped part of the copper plate and the steel plate, so that the copper plate and the steel plate are tightly attached, and the part of the copper plate protruding out of the steel plate is punched by the punching equipment, so that the copper plate is tightly attached to two side edges of the steel plate, and three sides of the steel plate are attached. The copper material of the copper-steel composite board can be coated on the upper side, the lower side and the two side edges of the steel material, so that the steel material can be more fully covered.
And (C) arranging a pipe seam on the arc pipe, wherein copper materials are arranged on two sides of the pipe seam. Because one side face and two side edges of the steel plate are both provided with copper materials, when the steel plate is bent, the exposed side face of the steel plate is used as the inner side face to be bent, so that the side face comprising the copper materials forms the outer side face, when the steel plate is bent into an arc pipe, the copper materials on the two side edges of the steel plate are close to each other to form a straight pipe seam, and the width of the pipe seam is controlled to be 0.1-2mm, so that the subsequent welding treatment can be conveniently carried out on the pipe seam.
Wherein the specific operation of the step (D) is as follows: and (3) approaching two sides of the circular arc pipe oppositely, bending the circular arc pipe inwards, and performing extrusion welding to form a circular pipe, wherein the extrusion pressure is 50-500 KN. The method comprises the steps of clamping two sides of an arc pipe by using clamping equipment, enabling the two sides to move close to each other in opposite directions, enabling the two sides of the arc pipe to be close to form an approximate circular pipe, bending and winding the two sides to the circle center in parallel, enabling the side edges of the two sides to contact and extrude, enabling the side edge contact parts of the two sides to generate atom migration, controlling the extrusion pressure to be 50KN-500KN at the moment, enabling the side edge part formed by bending to have a copper layer and a steel layer, meanwhile, due to the fact that the hardness of steel is high, steel materials can penetrate out of the copper materials and expose out of the copper materials in the process of excessive extrusion, and therefore the phenomenon of steel leakage is caused, copper supplementing treatment is needed in subsequent steps, the outer surface of the circular pipe is covered with copper, meanwhile, the welding position can be further strengthened, and. After welding, the width of the part of the surface exposed out of the base material is 0.01mm-20 mm.
And (E) performing copper supplementing treatment, namely performing sand blasting treatment on the welding position of the circular tube, spraying a base material, keeping the temperature at 600-1100 ℃ for 5min-10h, stretching along the axial direction with the stretching rate of 5% -30%, and performing surface polishing to obtain the copper-steel composite welded tube. The surface of the pipe is subjected to sand blasting treatment by using iron sand or steel balls with the thickness of 0.05mm-3mm, so that the roughness of the surface of the pipe can be increased, and the binding force between the subsequent copper base material and the surface of the pipe can be improved. The spraying base coating uses plasma copper spraying treatment or electric arc copper spraying treatment, and heat preservation is carried out at a high temperature for a period of time after the spraying base coating, so that copper base materials can be combined with one another to form a flat and stable copper base layer, the pipe wall is flat and smooth after spraying, and the sealing performance is good. Meanwhile, the pipe is subjected to necking treatment, so that the pipe diameter is reduced, the welding position is tighter, mechanical stress is removed, and the mechanical strength of the whole pipe is better.
And (E) the copper supplementing treatment is to clean the surface of the circular tube, cold welding and copper coating are carried out on the cleaned circular tube, the circular tube is stretched along the axial direction, the stretching rate is 5% -30%, and the copper-steel composite welded tube is manufactured after surface polishing. Proper stretching can make the internal pipe seam smaller, so that the sealing performance of the pipe is better. The geminate transistors surface is washed earlier, gets rid of impurity dust, and the follow-up finish machining of being convenient for, simultaneously, the finish machining of control certain precision makes the pipe surface more level and more smooth, makes follow-up cold welding mouth level and smooth, and the pipe leakproofness is good, carries out the throat processing to the geminate transistors, makes the pipe diameter diminish, and the splice is inseparabler, simultaneously, gets rid of mechanical stress, and the mechanical strength of whole pipe is better. Wherein, the reduction rate of the shaping and drawing shrinkage pipe is controlled to be less than 30 percent, and preferably, the reduction rate is 15 percent. The surface cleaning is one or more of acid washing, grinding and polishing or cutting and finishing.
And (E) the copper supplementing treatment is to clean the surface of the round pipe, weld the cleaned round pipe, stretch the round pipe along the axial direction with the stretching rate of 5-30 percent, and polish the surface to prepare the copper-steel composite electric seam pipe. The surface of the pipe is cleaned, impurity and dust on the surface of the pipe are removed, the surface of the pipe is smoother by controlling the finish machining with certain precision, the pipe is welded by using one of flame brazing, argon arc welding, high-frequency welding, laser welding and carbon dioxide arc welding to form a copper-steel composite welded pipe, the welding is firmer, the sealing performance is better, and the mechanical strength of the whole pipe is higher. The surface cleaning is one or more of acid washing, grinding and polishing or cutting and finishing.
And (E) cleaning the surface of the circular tube, fixing the circular tube by using a heat insulation material, exposing the part to be copper-supplemented, heating and melting the welding flux, pouring out the welding flux by using a heat insulation container, covering the part exposed with the base material, stretching the welding flux along the axial direction, wherein the stretching elongation is 5-30%, and polishing the surface to prepare the copper-steel composite electric seam tube. Cleaning the surface of a circular tube, and cleaning the surface by using acid washing or grinding polishing or cutting finish machining, wherein the cutting depth is 0.05-0.3mm, fixing the circular tube by using a heat insulation material to expose a part to be supplemented with copper, heating and melting a welding flux, pouring out the part by using a heat insulation container to cover the exposed substrate part, then stretching along the axial direction, and obtaining the copper-steel composite electric seam tube after the surface grinding polishing, wherein the stretching elongation is 5-30%.
And (E) the copper supplementing treatment is to clean the surface of the circular tube, fix the cleaned circular tube tool, load solder into the circular tube tool, place the circular tube tool at the temperature of 650-1100 ℃ for 5min-10h, stretch the circular tube tool along the axial direction at the stretching rate of 5% -30%, and polish the surface of the circular tube tool to obtain the copper-steel composite electric welded tube. The method uses furnace welding to weld the pipe, can carry out copper supplement welding on the inner side and the outer side of the pipe simultaneously, and simultaneously forms the inner side and the outer side, so that the prepared copper-steel composite welded pipe has better sealing property and mechanical strength. Specifically, the surface of a round pipe is cleaned, dust and impurities are removed, finish machining is carried out under the precision of 0.05mm-0.3mm, the inner wall and the outer wall of the pipe are smooth, welding materials are installed in a filling groove, a round pipe tool is fixed, the fixed round pipe and the fixed tool are pushed into a furnace, the welding materials are melted by heating, a certain temperature is kept, welding is firmly combined with the round pipe, the round pipe is pulled out of the furnace for cooling, a contracted pipe is drawn by shaping, the pipe diameter is reduced, the welding position is tighter, the surface is polished, the surface of the pipe is smooth, and the copper-steel composite electric seam pipe is formed. The surface cleaning is one or more of acid washing, grinding and polishing or cutting and finishing. The shaping drawing and shrinking pipe is stretched along the axial direction, and the stretching elongation is 5-30%.
Wherein, the copper supplementing treatment in the step (E) uses the brass solder or the red copper solder as the solder. The brass solder or red copper welding is used, so that the surface of the pipe is completely covered with copper, the pipe can be matched with copper base material accessories for use, the application range of the pipe is enlarged, meanwhile, the service life of the pipe can be prolonged by the brass welding or red copper welding, and the steel is prevented from being exposed in the air and rusting and corroding.
The invention has the beneficial effects that: according to the preparation method of the copper-steel composite welded pipe, the steel plate and the copper plate are punched into the copper-steel composite plate, the copper-steel composite plate is bent into the arc pipe, the arc pipe is extruded and welded into the circular pipe, and copper supplement treatment is performed to obtain the copper-steel composite welded pipe.
Detailed Description
The invention is further described with reference to the following examples.
Example 1
A preparation method of a copper-steel composite seamed pipe comprises the following steps:
step (A): manufacturing a steel substrate into a steel plate, and manufacturing a copper substrate into a copper plate;
step (B): stacking steel plates and copper plates, and stamping the steel plates and the copper plates into copper-steel composite plates;
step (C): bending and rolling the copper-steel composite plate to form an arc pipe;
step (D): two sides of the circular arc pipe are close to each other in opposite directions and are extruded and welded to form a circular pipe;
a step (E): and (4) carrying out copper supplementing treatment on the welding position of the circular tube to form the copper-steel composite seamed tube.
The pressing pressure in the step (B) is 300 KN.
And (B) the copper-steel composite board comprises steel and copper coated on one side face and two side edges of the steel.
And (C) arranging a pipe seam on the circular arc pipe, wherein copper materials are arranged on two sides of the pipe seam.
The specific operation of the step (D) is as follows: and (3) approaching two sides of the circular arc pipe oppositely, bending the circular arc pipe inwards, and performing extrusion welding to form a circular pipe, wherein the extrusion pressure is 100 KN.
The copper supplementing treatment in the step (E) is to perform sand blasting treatment on the circular tube by using steel grit with the diameter of 0.05mm, spray base material, keep the temperature at 600 ℃ for 10 hours, stretch the circular tube along the axial direction, control the stretching elongation rate to be 5 percent, and polish the surface of the circular tube to form the copper-steel composite electric-welded tube
The solder is brass solder.
Example 2
A preparation method of a copper-steel composite seamed pipe comprises the following steps:
step (A): manufacturing a steel substrate into a steel plate, and manufacturing a copper substrate into a copper plate;
step (B): stacking steel plates and copper plates, and stamping the steel plates and the copper plates into copper-steel composite plates;
step (C): bending and rolling the copper-steel composite plate to form an arc pipe;
step (D): two sides of the circular arc pipe are close to each other in opposite directions and are extruded and welded to form a circular pipe;
a step (E): and (4) carrying out copper supplementing treatment on the welding position of the circular tube to form the copper-steel composite seamed tube.
The pressing pressure in the step (B) is 500 KN.
And (B) the copper-steel composite board comprises steel and copper coated on one side face and two side edges of the steel.
And (C) arranging a pipe seam on the circular arc pipe, wherein copper materials are arranged on two sides of the pipe seam.
The specific operation of the step (D) is as follows: and (3) approaching two sides of the circular arc pipe oppositely, bending the circular arc pipe inwards, and performing extrusion welding to form a circular pipe, wherein the extrusion pressure is 500 KN.
And (E) performing copper supplementing treatment, namely performing sand blasting treatment on the circular tube by using steel grit with the diameter of 3mm, spraying a base material, keeping the temperature at 850 ℃ for 2h, stretching along the axial direction, controlling the stretching elongation to be 15%, and performing surface grinding and polishing to form the copper-steel composite welded tube.
The solder is red copper solder.
Example 3
A preparation method of a copper-steel composite seamed pipe comprises the following steps:
step (A): manufacturing a steel substrate into a steel plate, and manufacturing a copper substrate into a copper plate;
step (B): stacking steel plates and copper plates, and stamping the steel plates and the copper plates into copper-steel composite plates;
step (C): bending and rolling the copper-steel composite plate to form an arc pipe;
step (D): two sides of the circular arc pipe are close to each other in opposite directions and are extruded and welded to form a circular pipe;
a step (E): and (4) carrying out copper supplementing treatment on the welding position of the circular tube to form the copper-steel composite seamed tube.
The pressing pressure in the step (B) is 400 KN.
And (B) the copper-steel composite board comprises steel and copper coated on one side face and two side edges of the steel.
And (C) arranging a pipe seam on the circular arc pipe, wherein copper materials are arranged on two sides of the pipe seam.
The specific operation of the step (D) is as follows: and (3) approaching two sides of the circular arc pipe oppositely, bending the circular arc pipe inwards, and performing extrusion welding to form a circular pipe, wherein the extrusion pressure is 300 KN.
And (E) performing copper supplementing treatment, namely performing sand blasting treatment on the circular tube by using steel grit with the diameter of 2mm, spraying a base material, keeping the temperature at 1100 ℃ for 5min, stretching along the axial direction, controlling the stretching elongation to be 30%, and performing surface grinding and polishing to form the copper-steel composite welded tube.
The solder is brass solder.
Example 4
A preparation method of a copper-steel composite seamed pipe comprises the following steps:
step (A): manufacturing a steel substrate into a steel plate, and manufacturing a copper substrate into a copper plate;
step (B): stacking steel plates and copper plates, and stamping the steel plates and the copper plates into copper-steel composite plates;
step (C): bending and rolling the copper-steel composite plate to form an arc pipe;
step (D): two sides of the circular arc pipe are close to each other in opposite directions and are extruded and welded to form a circular pipe;
a step (E): and (4) carrying out copper supplementing treatment on the welding position of the circular tube to form the copper-steel composite seamed tube.
And (B) the copper-steel composite board comprises steel and copper coated on one side face and two side edges of the steel.
The pressing pressure in the step (B) is 500 KN.
And (C) arranging a pipe seam on the circular arc pipe, wherein copper materials are arranged on two sides of the pipe seam.
The specific operation of the step (D) is as follows: and (3) extruding the two sides of the circular arc pipe in a manner of approaching to each other, wherein the extrusion pressure is 500N.
And (E) the copper supplementing treatment is to clean the surface of the circular tube, perform cutting finish machining with the precision of 0.05mm, perform cold welding copper cladding on the circular tube after finish machining, and perform shaping, drawing and shrinking to form the copper-steel composite seamed tube. The stretch elongation of the shaping and drawing shrinkage pipe is 30 percent.
Example 5
A preparation method of a copper-steel composite seamed pipe comprises the following steps:
step (A): manufacturing a steel substrate into a steel plate, and manufacturing a copper substrate into a copper plate;
step (B): stacking steel plates and copper plates, and stamping the steel plates and the copper plates into copper-steel composite plates;
step (C): bending and rolling the copper-steel composite plate to form an arc pipe;
step (D): two sides of the circular arc pipe are close to each other in opposite directions and are extruded and welded to form a circular pipe;
a step (E): and (4) carrying out copper supplementing treatment on the welding position of the circular tube to form the copper-steel composite seamed tube.
And (B) the copper-steel composite board comprises steel and copper coated on one side face and two side edges of the steel.
The pressing pressure in the step (B) is 300 KN.
And (C) arranging a pipe seam on the circular arc pipe, wherein copper materials are arranged on two sides of the pipe seam.
The specific operation of the step (D) is as follows: and (3) approaching two sides of the circular arc pipe oppositely, bending the circular arc pipe inwards, and performing extrusion welding to form a circular pipe, wherein the extrusion pressure is 200N.
And (E) the copper supplementing treatment is to clean the surface of the circular tube, perform cutting finish machining with the precision of 0.3mm, perform cold welding copper cladding on the circular tube after finish machining, and perform shaping, drawing and shrinking to form the copper-steel composite seamed tube. The stretch elongation of the shaping and drawing shrinkage pipe is 5 percent.
The solder is brass solder.
Example 6
A preparation method of a copper-steel composite seamed pipe comprises the following steps:
step (A): manufacturing a steel substrate into a steel plate, and manufacturing a copper substrate into a copper plate;
step (B): stacking steel plates and copper plates, and stamping the steel plates and the copper plates into copper-steel composite plates;
step (C): bending and rolling the copper-steel composite plate to form an arc pipe;
step (D): two sides of the circular arc pipe are close to each other in opposite directions and are extruded and welded to form a circular pipe;
a step (E): and (4) carrying out copper supplementing treatment on the welding position of the circular tube to form the copper-steel composite seamed tube.
And (B) the copper-steel composite board comprises steel and copper coated on one side face and two side edges of the steel.
The pressing pressure in the step (B) is 300 KN.
And (C) arranging a pipe seam on the circular arc pipe, wherein copper materials are arranged on two sides of the pipe seam.
The specific operation of the step (D) is as follows: and (3) extruding two sides of the circular arc pipe in a manner of approaching to each other, wherein the extrusion pressure is 100N.
And (E) the copper supplementing treatment is to clean the surface of the circular tube, carry out cutting finish machining with the precision of 0.05mm, fix the circular tube tool after finish machining, load solder, keep the temperature for 10 hours at the temperature of 650 ℃, shape and draw the contracted tube, polish the surface, and cut the tube to form the copper-steel composite electric seamed tube.
The solder is brass solder.
The stretch elongation of the shaping and drawing shrinkage pipe is 25 percent.
Example 7
A preparation method of a copper-steel composite seamed pipe comprises the following steps:
step (A): manufacturing a steel substrate into a steel plate, and manufacturing a copper substrate into a copper plate;
step (B): stacking steel plates and copper plates, and stamping the steel plates and the copper plates into copper-steel composite plates;
step (C): bending and rolling the copper-steel composite plate to form an arc pipe;
step (D): two sides of the circular arc pipe are close to each other in opposite directions and are extruded and welded to form a circular pipe;
a step (E): and (4) carrying out copper supplementing treatment on the welding position of the circular tube to form the copper-steel composite seamed tube.
And (B) the copper-steel composite board comprises steel and copper coated on one side face and two side edges of the steel.
The pressing pressure in the step (B) is 400 KN.
And (C) arranging a pipe seam on the circular arc pipe, wherein copper materials are arranged on two sides of the pipe seam.
The specific operation of the step (D) is as follows: and (3) extruding the two sides of the circular arc pipe in opposite directions, wherein the extrusion pressure is 300 KN.
And (E) the copper supplementing treatment is to clean the surface of the circular tube, carry out cutting finish machining with the precision of 0.2mm, fix the circular tube tool after finish machining, load solder, keep the temperature for 6h at the temperature of 800 ℃, shape and draw the contracted tube, polish the surface, and cut the tube to form the copper-steel composite electric seamed tube.
The solder is red copper solder.
The stretch elongation of the shaping and drawing shrinkage pipe is 5 percent.
Example 8
A preparation method of a copper-steel composite seamed pipe comprises the following steps:
step (A): manufacturing a steel substrate into a steel plate, and manufacturing a copper substrate into a copper plate;
step (B): stacking steel plates and copper plates, and stamping the steel plates and the copper plates into copper-steel composite plates;
step (C): bending and rolling the copper-steel composite plate to form an arc pipe;
step (D): two sides of the circular arc pipe are close to each other in opposite directions and are extruded and welded to form a circular pipe;
a step (E): and (4) carrying out copper supplementing treatment on the welding position of the circular tube to form the copper-steel composite seamed tube.
And (B) the copper-steel composite board comprises steel and copper coated on one side face and two side edges of the steel.
The pressing pressure in the step (B) is 500 KN.
And (C) arranging a pipe seam on the circular arc pipe, wherein copper materials are arranged on two sides of the pipe seam.
The specific operation of the step (D) is as follows: and (3) extruding the two sides of the circular arc pipe in a manner of approaching to each other, wherein the extrusion pressure is 500N.
And (E) the copper supplementing treatment is to clean the surface of the circular tube, carry out cutting finish machining with the precision of 0.3mm, fix the circular tube tool after finish machining, load solder, keep the temperature for 5min at the temperature of 1100 ℃, shape and draw the contracted tube, polish the surface, and cut the tube to form the copper-steel composite electric seamed tube.
The solder is red copper solder.
The stretch elongation of the shaping and drawing shrinkage pipe is 15 percent.
Example 9
A preparation method of a copper-steel composite seamed pipe comprises the following steps:
step (A): manufacturing a steel substrate into a steel plate, and manufacturing a copper substrate into a copper plate;
step (B): stacking steel plates and copper plates, and stamping the steel plates and the copper plates into copper-steel composite plates;
step (C): bending and rolling the copper-steel composite plate to form an arc pipe;
step (D): two sides of the circular arc pipe are close to each other in opposite directions and are extruded and welded to form a circular pipe;
a step (E): and (4) carrying out copper supplementing treatment on the welding position of the circular tube to form the copper-steel composite seamed tube.
And (B) the copper-steel composite board comprises steel and copper coated on one side face and two side edges of the steel.
The pressing pressure in the step (B) is 400 KN.
And (C) arranging a pipe seam on the circular arc pipe, wherein copper materials are arranged on two sides of the pipe seam.
The specific operation of the step (D) is as follows: and (3) extruding the two sides of the circular arc pipe in a manner of approaching to each other, wherein the extrusion pressure is 500N. The copper supplementing treatment comprises the steps of cleaning the surface of a circular tube, fixing the circular tube by using a heat insulating material, exposing a part to be supplemented with copper, heating and melting a welding flux, pouring out the welding flux by using a heat insulating container, covering the part exposed with a base material, stretching the welding flux along the axial direction, wherein the stretching elongation is 25%, and polishing the surface to obtain the copper-steel composite electric welded tube.
The solder is red copper solder.
Example 10
A preparation method of a copper-steel composite seamed pipe comprises the following steps:
step (A): manufacturing a steel substrate into a steel plate, and manufacturing a copper substrate into a copper plate;
step (B): stacking steel plates and copper plates, and stamping the steel plates and the copper plates into copper-steel composite plates;
step (C): bending and rolling the copper-steel composite plate to form an arc pipe;
step (D): two sides of the circular arc pipe are close to each other in opposite directions and are extruded and welded to form a circular pipe;
a step (E): and (4) carrying out copper supplementing treatment on the welding position of the circular tube to form the copper-steel composite seamed tube.
And (B) the copper-steel composite board comprises steel and copper coated on one side face and two side edges of the steel.
The pressing pressure in the step (B) is 300 KN.
And (C) arranging a pipe seam on the circular arc pipe, wherein copper materials are arranged on two sides of the pipe seam.
The specific operation of the step (D) is as follows: and (3) extruding the two sides of the circular arc pipe to be close to each other, wherein the extrusion pressure is 450N.
And (E) the copper supplementing treatment is to clean the surface of the circular tube, fix the cleaned circular tube tool, load solder, place the circular tube tool at the temperature of 1100 ℃ for heat preservation for 5min, stretch the circular tube tool along the axial direction with the stretching rate of 5 percent, and polish the surface of the circular tube tool to prepare the copper-steel composite electric seam tube.
The solder is brass solder.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. The preparation method of the copper-steel composite seamed pipe is characterized by comprising the following steps: comprises the following steps:
step (A): manufacturing a steel substrate into a steel plate, and manufacturing a copper substrate into a copper plate;
step (B): stacking steel plates and copper plates, and stamping the steel plates and the copper plates into copper-steel composite plates;
step (C): bending and rolling the copper-steel composite plate to form an arc pipe;
step (D): two sides of the circular arc pipe are close to each other in opposite directions and are extruded and welded to form a circular pipe;
a step (E): and (4) carrying out copper supplementing treatment on the welding position of the circular tube to form the copper-steel composite seamed tube.
2. The method for preparing the copper-steel composite seamed pipe of claim 1, wherein the method comprises the following steps: and (C) stamping in the step (B) under the pressure of 50-500 KN, wherein the copper-steel composite plate comprises steel and copper materials coated on one side face and two side edges of the steel.
3. The method for preparing the copper-steel composite seamed pipe of claim 1, wherein the method comprises the following steps: and (C) arranging a pipe seam on the circular arc pipe, wherein copper materials are arranged on two sides of the pipe seam.
4. The method for preparing the copper-steel composite seamed pipe of claim 1, wherein the method comprises the following steps: the specific operation of the step (D) is as follows: and (3) approaching two sides of the circular arc pipe oppositely, bending the circular arc pipe inwards, and performing extrusion welding to form a circular pipe, wherein the extrusion pressure is 50-500 KN.
5. The method for preparing the copper-steel composite seamed pipe of claim 1, wherein the method comprises the following steps: and (E) performing copper supplementing treatment, namely performing sand blasting treatment on the welding position of the circular tube, spraying a base material, keeping the temperature at 600-1100 ℃ for 5min-10h, stretching along the axial direction with the stretching rate of 5% -30%, and performing surface grinding and polishing to obtain the copper-steel composite electric welded tube.
6. The method for preparing the copper-steel composite seamed pipe of claim 1, wherein the method comprises the following steps: and (E) the copper supplementing treatment is to clean the surface of the circular tube, cold welding and copper coating are carried out on the cleaned circular tube, stretching is carried out along the axial direction, the stretching rate is 5% -30%, and the copper-steel composite seam tube is manufactured after surface polishing.
7. The method for preparing the copper-steel composite seamed pipe of claim 1, wherein the method comprises the following steps: and (E) the copper supplementing treatment is to clean the surface of the round pipe, weld the cleaned round pipe, stretch the round pipe along the axial direction with the stretching rate of 5-30 percent, and polish the surface to prepare the copper-steel composite electric seam pipe.
8. The method for preparing the copper-steel composite seamed pipe of claim 1, wherein the method comprises the following steps: and (E) the copper supplementing treatment is to clean the surface of the circular tube, fix the circular tube by using a heat insulating material, expose the part to be supplemented with copper, heat and melt the solder, pour out the solder by using a heat insulating container, cover the part exposed with the base material, stretch the copper-steel composite welded tube along the axial direction with the stretching elongation of 5 to 30 percent, and polish the surface to prepare the copper-steel composite welded tube.
9. The method for preparing the copper-steel composite seamed pipe of claim 1, wherein the method comprises the following steps: and (E) the copper supplementing treatment is to clean the surface of the circular tube, fix the cleaned circular tube tool, load solder into the circular tube tool, place the circular tube tool at the temperature of 650-1100 ℃ for 5min-10h, stretch the circular tube tool along the axial direction at the stretch rate of 5% -30%, and polish the surface of the circular tube tool to obtain the copper-steel composite electric seamed tube.
10. The method for preparing the copper-steel composite seamed pipe of claim 1, wherein the method comprises the following steps: the step (E) of copper supplementing treatment uses the brazing filler metal as brass brazing filler metal or red copper brazing filler metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010826321.2A CN112091537A (en) | 2020-08-17 | 2020-08-17 | Preparation method of copper-steel composite seamed pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010826321.2A CN112091537A (en) | 2020-08-17 | 2020-08-17 | Preparation method of copper-steel composite seamed pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112091537A true CN112091537A (en) | 2020-12-18 |
Family
ID=73754472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010826321.2A Pending CN112091537A (en) | 2020-08-17 | 2020-08-17 | Preparation method of copper-steel composite seamed pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112091537A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113997018A (en) * | 2021-11-02 | 2022-02-01 | 东莞市金瑞五金股份有限公司 | Production method of copper-steel composite coiled pipe |
| CN114413531A (en) * | 2022-01-11 | 2022-04-29 | 河南新科隆电器有限公司 | Novel liquid storage tank for refrigerator/freezer and processing method thereof |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1037201A (en) * | 1988-04-26 | 1989-11-15 | 哈尔滨冶金研究所 | Copper-clad-steel bimetallic tube and manufacture method thereof |
| EP0449600A2 (en) * | 1990-03-30 | 1991-10-02 | BUNDY GmbH | Multilayer tubing made from metal and production process therefor |
| JPH10249433A (en) * | 1997-03-10 | 1998-09-22 | Hitachi Cable Ltd | Manufacture of interior covered tube |
| JP2000190021A (en) * | 1998-12-24 | 2000-07-11 | Nisshin Steel Co Ltd | Cu plated electroseamed steel pipe and manufacture thereof |
| CN201159340Y (en) * | 2008-03-13 | 2008-12-03 | 常州市武进顺达精密钢管有限公司 | Cold drawing accurate single layer welded pipe |
| CN102107232A (en) * | 2010-12-23 | 2011-06-29 | 江苏其元集团有限公司 | Method for manufacturing steel-copper composite welded tube |
| CN102588680A (en) * | 2012-03-07 | 2012-07-18 | 张晓明 | Copper-clad steel tube manufactured by high-speed welding |
| CN103343181A (en) * | 2013-07-19 | 2013-10-09 | 沈阳东冶汉森冶金装备有限公司 | Copper steel composite converter oxygen lance sprayer |
| CN203240136U (en) * | 2013-05-21 | 2013-10-16 | 浙江兆隆合金股份有限公司 | Novel copper-steel composite pipe |
| CN103511759A (en) * | 2012-06-28 | 2014-01-15 | 浙江兆隆合金股份有限公司 | Low-stress copper steel composite welded pipe and production method thereof |
| CN104157822A (en) * | 2014-08-25 | 2014-11-19 | 深圳市中金岭南科技有限公司 | Electric conductive connecting piece used for secondary battery, preparation method thereof and laminatedly compounded metal strip material |
| CN205243859U (en) * | 2015-12-11 | 2016-05-18 | 上海日立电器有限公司 | Compressor and connecting pipe admits air thereof |
-
2020
- 2020-08-17 CN CN202010826321.2A patent/CN112091537A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1037201A (en) * | 1988-04-26 | 1989-11-15 | 哈尔滨冶金研究所 | Copper-clad-steel bimetallic tube and manufacture method thereof |
| EP0449600A2 (en) * | 1990-03-30 | 1991-10-02 | BUNDY GmbH | Multilayer tubing made from metal and production process therefor |
| JPH10249433A (en) * | 1997-03-10 | 1998-09-22 | Hitachi Cable Ltd | Manufacture of interior covered tube |
| JP2000190021A (en) * | 1998-12-24 | 2000-07-11 | Nisshin Steel Co Ltd | Cu plated electroseamed steel pipe and manufacture thereof |
| CN201159340Y (en) * | 2008-03-13 | 2008-12-03 | 常州市武进顺达精密钢管有限公司 | Cold drawing accurate single layer welded pipe |
| CN102107232A (en) * | 2010-12-23 | 2011-06-29 | 江苏其元集团有限公司 | Method for manufacturing steel-copper composite welded tube |
| CN102588680A (en) * | 2012-03-07 | 2012-07-18 | 张晓明 | Copper-clad steel tube manufactured by high-speed welding |
| CN103511759A (en) * | 2012-06-28 | 2014-01-15 | 浙江兆隆合金股份有限公司 | Low-stress copper steel composite welded pipe and production method thereof |
| CN203240136U (en) * | 2013-05-21 | 2013-10-16 | 浙江兆隆合金股份有限公司 | Novel copper-steel composite pipe |
| CN103343181A (en) * | 2013-07-19 | 2013-10-09 | 沈阳东冶汉森冶金装备有限公司 | Copper steel composite converter oxygen lance sprayer |
| CN104157822A (en) * | 2014-08-25 | 2014-11-19 | 深圳市中金岭南科技有限公司 | Electric conductive connecting piece used for secondary battery, preparation method thereof and laminatedly compounded metal strip material |
| CN205243859U (en) * | 2015-12-11 | 2016-05-18 | 上海日立电器有限公司 | Compressor and connecting pipe admits air thereof |
Non-Patent Citations (1)
| Title |
|---|
| 陈冠国: "《"机械设备维修"，陈冠国，第132-133页，北京：机械工业出版社，1997年8月31日》", 31 August 1997 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113997018A (en) * | 2021-11-02 | 2022-02-01 | 东莞市金瑞五金股份有限公司 | Production method of copper-steel composite coiled pipe |
| CN113997018B (en) * | 2021-11-02 | 2023-03-14 | 东莞市金瑞五金股份有限公司 | Production method of copper-steel composite coiled pipe |
| CN114413531A (en) * | 2022-01-11 | 2022-04-29 | 河南新科隆电器有限公司 | Novel liquid storage tank for refrigerator/freezer and processing method thereof |
| CN114413531B (en) * | 2022-01-11 | 2024-03-01 | 河南新科隆电器有限公司 | Novel liquid storage tank for refrigerator/freezer and processing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100372621C (en) | Method for manufacturing copper aluminium composite tubing and copper aluminium tubing produced thereby | |
| CN112091537A (en) | Preparation method of copper-steel composite seamed pipe | |
| CN102107232B (en) | Method for manufacturing steel-copper composite welded tube | |
| KR101752733B1 (en) | Manufacturing method of double wall pipe | |
| CN102284549A (en) | Manufacturing method of aluminum-clad copper pipe having metallurgical bonding | |
| CN101234406A (en) | Method for manufacturing multiunit tube | |
| CN107262550B (en) | A kind of manufacturing method of aluminium aluminium composite pipe | |
| CN102527768A (en) | Manufacturing method of copper-clad aluminum pipe | |
| CN104384859A (en) | Production method for nickel base alloy N06625 composite seamless steel pipe | |
| CN110369959B (en) | Manufacturing process of integrated stretching liquid storage device | |
| CN100420892C (en) | Inner diameter of copper aluminum joint, copper aluminum joint with diameter being equal to inner diameter of aluminum pipe, and preparation method | |
| CN105171259A (en) | Composite pipe and manufacturing method and application thereof | |
| CN104607773A (en) | Tubulation welding method of stainless steel outer composite tube | |
| CN102107233B (en) | Method for manufacturing steel/copper composite welded pipe | |
| CN201596691U (en) | Equipment for producing aluminum covered copper tubes | |
| CN101195134A (en) | Method for the production of heat-exchange tubes | |
| CN1107561C (en) | Manufacture of bimetallic compisite pipe | |
| KR100293577B1 (en) | Method of and apparatus for producing steel pipes | |
| CN113997018B (en) | Production method of copper-steel composite coiled pipe | |
| KR100985968B1 (en) | The device of shaping an oil separator for air conditioner system | |
| KR20110077219A (en) | Method of manufacturing the stainless pipe | |
| CN206887203U (en) | The hot plating copper equipment of irony wire rod, bar, tube surfaces | |
| CN111761242A (en) | Welding process of superfine super-strong high-carbon steel wire with diameter less than or equal to 0.4mm | |
| CN112518240B (en) | Production method of stainless steel composite billet | |
| CN112077533B (en) | Copper-iron composite connecting pipe and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201218 |