JP2006281235A - Method of manufacturing assembled body composed of a plurality of members and method of manufacturing electromagnetic control valve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a brazing method which makes it possible to rationally perform not only the brazing between a metal member such as a stator made of a magnetic material and a metal member such as a guide pipe made of a non-magnetic material but also the magnetic annealing of these metal members. <P>SOLUTION: By making use of a brazing material 90 which can be fused at a lower temperature than a magnetic annealing temperature of metal member 33, the metal member 33 such as a stator made of a magnetic material and the metal member 35 such as a guide pipe made of a non-magnetic material are heated to a predetermined temperature in a furnace to perform the magnetic annealing of the metal member 33 concurrent with the brazing of these metal members. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method for manufacturing an assembly including a plurality of members including a metal member made of a magnetic material and a metal member made of a nonmagnetic material, and a guide for a plunger guide made of a stator made of a magnetic metal material and a nonmagnetic metal material. The present invention relates to a method for manufacturing an electromagnetic control valve including an assembly in which a pipe is connected and fixed by brazing.

  For example, an electromagnetic control valve for a variable displacement compressor used in a car air conditioner or the like is connected and fixed to a stator made of a magnetic metal material and a lower end portion of the stator as seen in Patent Document 1 below. An assembly having a guide pipe for a plunger guide made of a nonmagnetic metal material, a holder made of a metal material connected and fixed to the lower end of the guide pipe, and a housing made of a metal material connected and fixed to the holder Is provided.

  In manufacturing an electromagnetic control valve having such an assembly, conventionally, as shown in FIG. 5A, for example, the stator 33 is formed in a stepped cylindrical shape, and the guide pipe 35 is connected to the terrace of the stator 33. The brazing material 95 is disposed between the terrace surface 33c of the stator 33 and the upper end 35c of the guide pipe 35. The stator 33 and the guide pipe 35 are heated to a predetermined temperature (brazing temperature) in the furnace so that the stator 33 and the guide pipe 35 are brazed. In this case, as shown in FIG. 5B, the brazing filler metal 95 is melted in the furnace and flows into the gap Sa between the fitting portion of the stator 33 and the guide pipe 35 by capillary action, and the stator 33 is lowered accordingly. Thereafter, by cooling, the stator 33 and the guide pipe 35 are brazed (brazed portion Ja) at the fitting portion, and are connected and fixed.

Japanese Patent Laid-Open No. 2003-166667

  The conventional method for manufacturing an electromagnetic control valve as described above has the following problems to be improved.

  (I) In addition to brazing the stator 33 and the guide pipe 35, the guide pipe 35 and the holder must be connected and fixed, and the holder and the housing must be connected and fixed. There was a dislike that the manufacturing cost was high. In addition, it is practically difficult to perform heat treatment after assembly in an assembly with brazing, and therefore, when the assembly includes a magnetic material, the magnetic properties of the magnetic material cannot be sufficiently improved. .

  (Ii) Since the brazing material 95 is disposed between the terrace surface 33c of the stator 33 and the upper end 35c of the guide pipe 35 for brazing, the brazing material 95 is melted during brazing and the stator 33 flows into the gap Sa between the fitting portion of the guide pipe 35 and the stator 33 is lowered as shown in FIG. However, the stator 33 is inclined and sinks during the lowering, or the brazing material 95 remains between the terrace surface 33c and the upper end 35c of the guide pipe 35. There is a case where the gap β is not formed until it contacts the upper end 35c of the sheet, and a gap β is formed between them. When such a gap β is formed, the gap length (air gap) between the attractor connected to the lower end of the stator and the plunger becomes inadequate, which causes a problem of hindering flow rate control and the like.

  The present invention has been made in view of the above circumstances, and its object is to braze and magnetic anneal a metal member such as a stator made of a magnetic material and a metal member such as a guide pipe made of a non-magnetic material. A brazing method capable of rationally performing an electromagnetic control valve, and a method capable of manufacturing a solenoid control valve including an assembly having a stator, a guide pipe, a holder, and a housing at a low cost and reasonably accurately. There is.

  In order to achieve the above-mentioned object, one of the manufacturing methods according to the present invention is that when the metal member A made of a magnetic material and the metal member B made of a non-magnetic material are connected and fixed by brazing. The member A and the metal member B are brazed by heating and holding under the processing conditions of the magnetic annealing of the metal member A, and subsequently the assembly of the metal member A and the metal member B is gradually cooled. And magnetic annealing of the metal member A is performed.

  In this case, it is preferable to use a brazing material that melts at a temperature lower than the magnetic annealing temperature.

  In a specific preferred embodiment, a magnetic steel material such as an electromagnetic stainless steel material is used as the material of the metal member A, a nonmagnetic steel material such as a nonmagnetic stainless steel material is used as the material of the metal member B, and copper is used as the brazing material. Use brazing or bronze brazing.

  In another preferred embodiment, the metal member A is a stepped columnar or cylindrical shape having a terrace surface and a stepped small diameter portion, and the metal member B is a cylindrical shape that can be externally fitted to the stepped small diameter portion, and the metal A ring-shaped groove for loading and holding a brazing material is formed at the opposite end of the step A small diameter portion of the member A, and the metal member B is externally fitted to the step small diameter portion, and the upper end of the ring A is formed on the terrace surface. The brazing is performed in a state where the brazing material is held between the groove and the inner peripheral surface of the metal member B.

  More specific examples include a guide pipe in which the metal member A is a stator in an electromagnetic control valve, and the metal member B is a plunger guide in the electromagnetic control valve.

  On the other hand, the manufacturing method of the electromagnetic control valve according to the present invention is an application of the brazing method described above, and includes a stator made of a magnetic metal material, and a non-magnetic metal material connected and fixed to the lower end of the stator. Electromagnetic control including an assembly having a guide pipe for a plunger guide, a holder made of a magnetic metal material connected and fixed to the lower end of the guide pipe, and a housing made of a magnetic metal material connected and fixed to the holder A method of manufacturing a valve, wherein the stator is a stepped columnar shape having a terrace surface and a step small diameter portion or a cylindrical shape, and the guide pipe is a cylindrical shape that can be externally fitted to the step small diameter portion. A ring-shaped groove for loading and holding the brazing material is formed at the end of the stepped small-diameter portion on the side opposite the terrace, and the guide pipe is externally fitted to the stepped small-diameter portion. An upper end is brought into contact with the terrace surface and an upper end thereof is brought into contact with the terrace surface to temporarily connect the stator, guide pipe, holder, and housing constituting the assembly, and a brazing material is connected to the groove. The assembly is temporarily held between the guide pipe and the inner peripheral surface of the guide pipe, and the assembly in the temporarily fixed state is heated and held in a processing furnace under the processing conditions of magnetic annealing of the magnetic metal material such as the stator. Then, the stator and the guide pipe are brazed, and subsequently, the assembly is taken out from the processing furnace and annealed, and the stator, the holder, and the housing are magnetically annealed.

  In a preferred embodiment, in addition to the above, the housing is manufactured to a size and shape that can be press-fitted into the holder, and the holder and the housing are plated with nickel or chrome, and the plated housing is press-fitted into the holder. Assembling the temporarily fixed assembly.

  In a further preferred aspect, in addition to the above, the holder is formed in a stepped cylindrical shape into which the guide pipe is fitted, and the guide pipe is fitted into the holder, and the guide pipe is fitted on the holder. The assembly in the temporarily fixed state is assembled by arranging the brazing material.

  According to the manufacturing method of the present invention, when brazing the metal member A made of a magnetic material and the metal member B made of a nonmagnetic material, a brazing material that melts at a temperature lower than the magnetic annealing temperature of the metal member A is obtained. In the processing furnace, the metal member A and the metal member B are heated and held under the magnetic annealing process conditions of the metal member A and brazed, and then the assembly is removed from the process furnace. Since the metal material A is magnetically annealed after being taken out and slowly cooled, satisfactory magnetic annealing can be performed even after brazing, and the improvement in the magnetic properties of the brazing assembly containing the magnetic metal material is satisfactory. Can be anything.

  In the method for manufacturing an electromagnetic control valve according to the present invention, a groove for loading and holding a brazing material is formed at the opposite end of the stepped small diameter portion of the stator, and the guide pipe is attached to the stepped small diameter portion. The stator, guide pipe, holder, and housing constituting the assembly are temporarily fixedly connected by fitting the upper end thereof to the terrace surface and the brazing material is connected to the groove and the inner peripheral surface of the guide pipe. The assembly in the temporarily fixed state is heated and held in the processing furnace under the magnetic annealing process conditions of the magnetic metal material such as the stator, and the stator and the guide pipe. Then, the assembly is gradually cooled, and the stator, the holder, and the housing are magnetically annealed. In this case, the molten brazing material is sucked up into the gap between the stator and the guide pipe by capillary action. Here, the terrace surface of the stator and the upper end of the guide pipe are brought into contact with each other from the beginning, and no brazing material is disposed between them, and the stator is sucked into the gap between the fitting portion of the stator and the guide pipe. Since the stator is not lifted by the brazing material thus formed, the terrace surface of the stator and the upper end of the guide pipe remain in contact during brazing. After brazing in this manner, the assembly is cooled, so that the stator and the guide pipe are brazed and connected and fixed at the fitting portion, and the stator, holder, and housing are magnetically annealed. This improves the magnetic properties.

  According to this manufacturing method, since the brazing material does not enter between the terrace surface of the stator and the upper end of the guide pipe, the terrace surface of the stator and the upper end of the guide pipe remain in contact with each other even after the brazing is completed. And no gap is formed between them. Therefore, it is possible to manufacture an electromagnetic control valve that can appropriately take the gap length (air gap) between the attractor connected to the lower end portion of the stator and the plunger and appropriately control the flow rate.

  In addition to the above, the housing is manufactured to a size and shape that can be press-fitted into the holder, and the holder and the housing are nickel-plated or chrome-plated. If a solid body is assembled, a diffusion bonding effect is produced in the plated portions of the housing and the holder, and the bonding strength thereof is greatly increased as compared with the case of only press-fitting. Thus, in this manufacturing method, joining strength can be raised only by plating and press-fitting.

  Hereinafter, an embodiment of a brazing method and an electromagnetic control valve manufacturing method of the present invention will be described with reference to the drawings.

  FIG. 1 is a longitudinal sectional view showing an example of an electromagnetic control valve for a variable displacement compressor to which a brazing method and a manufacturing method according to an embodiment of the present invention are applied. In the following, first, the configuration of the electromagnetic control valve 1 will be described, and then the manufacturing method of the control valve 1 will be described.

  The illustrated control valve 1 includes a valve stem 15 having a valve body portion 15a and a valve chamber 21 provided with a valve seat (valve port) 22 with which the valve body portion 15a contacts and separates. A plurality of discharge pressure refrigerant introduction ports 25 for introducing a refrigerant having a discharge pressure Pd from the compressor are provided in a portion (upstream side of the valve seat 22), and a compressor crank is provided below the valve seat 22 (downstream side). A valve body 20 provided with a high-pressure refrigerant supply port 26 communicating with the chamber, and an electromagnetic actuator 30 are provided.

  An electromagnetic actuator 30 includes an electromagnetic coil 32 having a connector portion 31 for energization excitation, a stepped cylindrical stator 33 made of a magnetic metal material disposed on the inner peripheral side of the coil 32, and a lower end portion of the stator 33. A suction member 34 having a concave-shaped cross section that is press-fitted and fixed to the periphery, a plunger 37 that is slidably disposed on the inner peripheral side of the guide pipe 35 below the suction member 34, and an outer periphery of the lower end of the stator 33 A cylindrical guide pipe 35 made of a nonmagnetic metal material for guiding the plunger 37 and having an inner periphery 35a at the upper end thereof connected and fixed to the (step small diameter portion 33a) by brazing (described later) so as to cover the outer periphery of the coil 32. Are provided with a stepped cylindrical housing 60 and a short cylindrical holder 50 disposed between the upper end of the valve body 20 and the coil 32.

  The lower end of the pipe 35 is fitted into the inner periphery (step large diameter portion 50 b) of the holder 50 and is connected and fixed by brazing (described later), and the lower diameter of the lower portion of the housing 60 is fixed to the outer periphery of the holder 50. The part 61 is press-fitted (described later). An upper end portion 62 of the housing 60 is caulked and fixed near the upper end portion of the coil 32. At the lower part of the holder 50, there is provided a cylindrical portion 50a with a thin flange that is fitted on the outer periphery of the upper portion of the valve body 20, and the holder 50 is fixed to the valve body 20 by peeling and staking the cylindrical portion 50a with the thin flange. Has been.

  The above-described stator 33, guide pipe 35, holder 50, and housing 60 constitute an assembly 80 of the present embodiment (described later with reference to FIGS. 2, 3, and 4).

  Further, an adjusting screw 65 having a hexagonal hole is screwed onto the stator 33, and a suction pressure Ps of the compressor is interposed between the adjusting screw 65 and the suction element 34 on the inner peripheral side of the stator 33. Is formed in the pressure sensing chamber 45. The pressure sensing chamber 45 includes a bellows 41, a reverse convex upper stopper 42, a reverse concave lower stopper 43, and a compression coil. A bellows body 40 comprising a spring 44 is disposed, and further, a compression coil that urges the bellows body 40 and the suction element 34 in a direction in which the bellows body 40 contracts (a direction in which the bellows body 40 is compressed toward the adjustment screw 65). A spring 46 is disposed. Also, a stepped operating rod 14 that passes through the suction element 34 is disposed between the lower stopper 43 (reverse concave part thereof) of the bellows body 40 and the plunger 37 (recessed part 37c thereof). A valve-opening spring 47 made of a compression coil spring that biases the valve rod 15 downward (in the valve-opening direction) via the plunger 37 is disposed between the valve 34 and the plunger 37 (the recess 37b).

  On the other hand, a convex stopper portion 28 for restricting the lowest position of the plunger 37 protrudes above the valve chamber 21 in the valve body 20, and a central portion above the valve chamber including the convex stopper portion 28. A guide hole 19 through which the valve rod 15 is slidably inserted is formed. In addition, a suction pressure introduction chamber 23 is formed on the outer periphery of the convex stopper portion 28, and a plurality of suction pressure refrigerant introduction ports 27 are formed on the outer periphery thereof, and introduced into the introduction chamber 23 from the introduction port 27. The refrigerant having the suction pressure Ps is passed through longitudinal grooves 37a, 37a,... Formed in the outer periphery of the plunger 37, a communication hole 37d formed in the central portion, a communication hole 39 formed in the suction element 34, and the like. It is introduced into the pressure sensitive chamber 45.

  A valve closing spring 48 formed of a conical compression coil spring for biasing the valve rod 15 upward is disposed at the lower portion of the valve body 20 (high-pressure refrigerant supply port 26). Due to this urging force, the upper end of the valve stem 15 is always in pressure contact with the plunger 37 (the communication hole 37d portion thereof).

  In the control valve 1 configured as described above, when the solenoid portion including the coil 32, the stator 33, and the attractor 34 is energized and energized, the plunger 37 is attracted to the attractor 34. Is moved upward (in the valve closing direction) by the urging force of the valve closing spring 48. On the other hand, the refrigerant having the suction pressure Ps introduced from the compressor to the suction pressure introduction port 27 is communicated with the longitudinal grooves 37a, 37a,... Formed in the outer periphery of the plunger 37 from the introduction chamber 23 and the suction element 39. The bellows body 40 (inside the vacuum pressure) is expanded and contracted according to the pressure in the pressure sensitive chamber 45 (suction pressure Ps), and contracts and decreases when the suction pressure Ps is high. The displacement is transmitted to the valve stem 15 via the actuating rod 14 and the plunger 37, thereby adjusting the valve opening (effective passage cross-sectional area between the valve seat 22 and the valve body 15a). Is done. That is, the opening degree of the valve includes the attraction force of the plunger 37 by the solenoid portion including the coil 32, the stator 33 and the attraction element 34, the urging force of the bellows body 40, the urging force by the valve opening spring 47 and the valve closing spring 48, In accordance with the valve opening degree, the amount (throttle amount) of the discharge pressure Pd introduced from the discharge pressure refrigerant introduction port 25 into the valve chamber 21 to the refrigerant supply port 26 side, that is, the crank chamber is adjusted. Thus, the pressure Pc in the crank chamber is controlled.

  In manufacturing the control valve 1 of this embodiment having such a configuration, as shown in FIGS. 2 and 3, the stator 33 is formed in a stepped cylindrical shape having a terrace surface 33c and a step small diameter portion 33a. The guide pipe 35 is formed in a cylindrical shape whose inner periphery 35a at the upper end can be fitted to the step small diameter portion 33a (the upper end 35c is tapered in cross section), and the step 33 side of the step small diameter portion 33a in the stator 33 is formed. A ring-shaped groove 33d having a semicircular cross section for loading and holding the brazing filler metal 90 is formed at the end, and the inner periphery 35a of the upper end of the guide pipe 35 is externally fitted to the step small diameter portion 33a and the upper end 35c of the terrace 35c The brazing material 90 is held between the groove 33d and the inner peripheral surface of the guide pipe 35 so as not to fall off.

  Here, a magnetic steel material (magnetic annealing temperature: 1100 to 1150 ° C.) such as an electromagnetic stainless steel material is used as the material of the stator 33, and a nonmagnetic material such as a nonmagnetic stainless steel material (for example, SUS305) is used as the material of the guide pipe 35. A steel material is used, and the brazing material 90 is a copper brazing material (melting temperature: 1083 ° C.) or bronze brazing (melting temperature: 880 to 1025 ° C.) for stainless steel materials and general steel materials. Here, as the material of the stator 33, a stainless steel material is used in terms of rust prevention, but other steel materials may be used.

  In addition to the above, as shown in FIG. 4, the lower small diameter portion 61 of the housing 60 is manufactured to have a size and shape that can be press-fitted into the outer periphery (step small diameter portion 50 f) of the holder 50. The lower small-diameter portion 61 of the housing 60 subjected to the plating is press-fitted into the step small-diameter portion 50f of the holder 50 until the lower end 61d contacts the terrace surface 50d. Here, steel for drawing (SPCE) or the like is used as the material for the housing 60, and steel such as sulfur free-cutting steel is used as the material for the holder 50. As plating, chromium plating may be used instead of nickel plating.

  Further, in addition to the above, the holder 50 is formed in a stepped cylindrical shape having a terrace surface 50c into which the guide pipe 35 is fitted and a step large diameter portion 50b, and the inner circumference of the holder 50 (the step large diameter portion 50b). The lower end 35b of the guide pipe 35 is inserted until the lower end 35e comes into contact with the terrace surface 50c and is fitted therein, and the brazing material is placed on the guide pipe fitting portion (the inner peripheral upper end chamfered portion 50r portion) of the holder 50. 92 (the same material as the brazing filler metal 90) is placed on it.

  After the stator 33, the guide pipe 35, the holder 50, and the housing 60 constituting the assembly 80 are temporarily fixed and connected in this manner, the temporarily fixed assembly 80 ′ (the state shown in FIG. 2) is obtained. Then, it is heated to a predetermined temperature using a continuous heat treatment furnace equipped with a work conveying means such as a mesh belt conveyor. Specifically, the processing furnace includes a heating section and a cooling section that follows, and is placed on a conveyor or the like in a posture (the posture shown in FIG. 2) in which the assembly 80 ′ in the temporarily fixed state is set up. It is conveyed continuously or intermittently, heated to the magnetic annealing temperature for a predetermined time (for example, about 1 hour) while being conveyed in a furnace, and then sent to a cooling section for cooling. In this case, the atmosphere in the furnace is preferably a reducing atmosphere (an appropriate amount of a reducing gas such as hydrogen is introduced into an inert gas such as nitrogen) in order to prevent oxidation.

  By heating the assembly 80 ′ in the processing furnace in this manner, the stator 33 and the guide pipe 35 and the guide pipe 35 and the holder 50 are brazed, and then the stator 33, the holder 50, Magnetic annealing of the housing 60 is performed. Here, in the brazed portion between the stator 33 and the guide pipe 35, as shown in FIG. 3, the brazing material 90 is melted, and the melted brazing material 90 is converted into the stator 33 (the stepped small diameter portion 33a) by capillary action. And the guide pipe 35 is sucked into the gap S of the fitting portion. Here, the terrace surface 33c of the stator 33 and the upper end 35c of the guide pipe 35 are brought into contact with each other from the beginning, and no brazing material is disposed between them, and the stator 33 and the guide pipe 35 are fitted. Since the stator 33 is not lifted by the brazing material 90 sucked into the gap Sa of the joint portion, the terrace surface 33c of the stator 33 and the upper end 35c of the guide pipe 35 remain in contact with each other during brazing. In the assembly 80 assembled in this way, in a single brazing process, the stator 33 and the guide pipe 35 are brazed at the fitting portion to be connected and fixed, and the stator 33, the holder 50, Magnetic annealing of the magnetic metal material of the housing 60 is performed, and the magnetic characteristics are sufficiently improved.

  Further, the stator 33 and the guide pipe 35 are brazed while maintaining an initial state in which the terrace surface 33c of the stator 33 and the upper end of the guide pipe 35 are in contact with each other. Β) is not formed. Therefore, an electromagnetic control valve capable of appropriately taking the gap length (air gap) α between the suction element 34 and the plunger 37 connected and fixed to the lower end portion of the stator 35 and appropriately performing flow rate control and the like is manufactured. Can do.

  In addition to the above, at the brazed portion between the lower end portion 35b of the guide pipe 35 and the holder 50, the brazing material 92 is melted, and the melted brazing material 92 becomes a step large diameter portion between the lower end portion 35b of the guide pipe 35 and the holder 50. The excess portion is poured into the gap Sb between 50b (fitting portion) and the surplus portion is retained in the reservoir portion 50g. Thereafter, by cooling, the guide pipe 35 and the holder 50 are brazed (brazed portion Jb) at the fitting portion, and are connected and fixed.

  Thus, in the present embodiment, the stator 33 and the guide pipe 35 and the guide pipe 35 and the holder 50 are brazed and the stator 33, the holder 50, and the housing 60 are magnetically annealed in a single brazing process. it can.

  In addition to the above, the housing 60 is manufactured to have a size and shape that can be press-fitted into the holder 50, and the holder 50 and the housing 60 are nickel-plated or chrome-plated, and the plated housing 60 is press-fitted into the holder 50. By assembling the temporarily fixed assembly 80 ′, a diffusion bonding effect of the plated portions of the housing 60 and the holder 50 is produced, and their bonding strength is greatly increased as compared with the case of only press-fitting. In this way, the bonding strength can be sufficiently increased simply by plating and press-fitting. Also in this case, since the heat treatment for obtaining the diffusion bonding effect can be performed in a single brazing process, the total heat treatment time can be shortened compared with the case where they are performed separately, and the heat treatment cost and the manufacturing cost can be reduced. It can be kept lower.

  Furthermore, since the guide pipe 35 and the holder 50 and the housing 60 and the holder 50 are connected and fixed by brazing and press-fitting, respectively, an O-ring or the like can be dispensed with, and the number of parts can be reduced, assembling and assembling can be improved. Improvements and the like can be achieved, and the effect of further reducing the manufacturing cost can be obtained.

The longitudinal cross-sectional view which shows an example of the electromagnetic control valve to which the brazing method and manufacturing method of one Embodiment which concern on this invention were applied. The figure which shows the assembly with which the electromagnetic control valve shown by FIG. 1 is equipped. The figure which expands and shows the brazing part of the stator of the electromagnetic control valve shown in FIG. 1, and a guide pipe. The figure which expands and shows the guide pipe of the electromagnetic control valve shown in FIG. 1, the brazing part of a holder, and the press-fitting part of a holder and a housing. The figure used for description of the problem regarding the brazing of the stator and holder of a conventional electromagnetic control valve.

Explanation of symbols

1 Electromagnetic control valve 33 Stator 33d Groove 34 Suction element 35 Pipe 37 Plunger 50 Holder 60 Housing 80 Assembly 90 Brazing material

Claims (9)

  When the metal member A made of a magnetic material and the metal member B made of a non-magnetic material are connected and fixed by brazing, the metal member A and the metal member B are subjected to the magnetic annealing treatment conditions of the metal member A. It consists of a plurality of members characterized by performing brazing by heating and holding, followed by slow cooling of the assembly of metal member A and metal member B, and magnetic annealing of said metal member A Manufacturing method of assembly.   The method for manufacturing an assembly comprising a plurality of members according to claim 1, wherein a brazing material that melts at a temperature lower than the magnetic annealing temperature is used.   A magnetic steel material such as an electromagnetic stainless steel material is used as the material of the metal member A, a nonmagnetic steel material such as a nonmagnetic stainless steel material is used as the material of the metal member B, and a copper or bronze solder is used as the brazing material. A method for producing an assembly comprising a plurality of members according to claim 1 or 2.   The metal member A is a stepped columnar shape or cylindrical shape having a terrace surface and a step small diameter portion, and the metal member B is a cylindrical shape that can be externally fitted to the step small diameter portion, and the step small diameter portion in the metal member A Forming a ring-shaped groove for loading and holding the brazing filler metal at the opposite end of the terrace surface, and fitting the metal member B to the stepped small diameter portion to bring the upper end into contact with the terrace surface, 4. The plurality of members according to claim 1, wherein the brazing is performed in a state where the brazing material is held so as to be sandwiched between the groove and the inner peripheral surface of the metal member B. 5. An assembly manufacturing method comprising:   The said metal member A is a stator in an electromagnetic control valve, The said metal member B is a guide pipe used as the plunger guide in the said electromagnetic control valve, It is any one of Claim 1 to 4 characterized by the above-mentioned. The manufacturing method of the assembly which consists of multiple members. A stator made of a magnetic metal material, a guide pipe for a plunger guide made of a nonmagnetic metal material connected and fixed to the lower end portion of the stator, a holder made of a magnetic metal material connected and fixed to the lower end portion of the guide pipe, and An electromagnetic control valve manufacturing method comprising an assembly having a housing made of a magnetic metal material connected and fixed to the holder,
The stator is a stepped columnar shape having a stepped surface and a stepped small diameter portion or a cylindrical shape, and the guide pipe is formed in a cylindrical shape that can be fitted to the stepped small diameter portion, and the stepped small diameter portion in the stator is on the side opposite to the stepped surface. A ring-shaped groove for loading and holding a brazing material is formed at the end, the guide pipe is externally fitted to the step small diameter portion, and the upper end is brought into contact with the terrace surface, and the upper end is formed on the terrace surface. The stator, the guide pipe, the holder, and the housing are brought into contact with each other, and the brazing material is held between the groove and the inner peripheral surface of the guide pipe. Is heated and held under the magnetic annealing process conditions of the magnetic metal material such as the stator, and the stator and the guide pipe are brazed, followed by the assembly. The slow cooling, and the stator, the holder, the manufacturing method of the electromagnetic control valve which is characterized in that the magnetic annealing of the housing.   The housing is manufactured to a size and shape that can be press-fitted into the holder, and the holder and the housing are nickel-plated or chrome-plated, and the plated housing is press-fitted into the holder to assemble the temporary fixing assembly. The method for manufacturing an electromagnetic control valve according to claim 6.   The holder is formed in a stepped cylindrical shape in which the guide pipe is fitted, the guide pipe is fitted in the holder, and a brazing material is disposed on the guide pipe fitting portion in the holder. The method for manufacturing an electromagnetic control valve according to claim 6 or 7, wherein a temporary fixing assembly is assembled.   An electromagnetic control valve manufactured by the manufacturing method according to claim 6.

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