CN112172262A - Multilayer structure, method for manufacturing the same, welding gun and welding machine - Google Patents

Multilayer structure, method for manufacturing the same, welding gun and welding machine Download PDF

Info

Publication number
CN112172262A
CN112172262A CN202010895464.9A CN202010895464A CN112172262A CN 112172262 A CN112172262 A CN 112172262A CN 202010895464 A CN202010895464 A CN 202010895464A CN 112172262 A CN112172262 A CN 112172262A
Authority
CN
China
Prior art keywords
fiber
composite layer
multilayer structure
layer
fiber composite
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.)
Granted
Application number
CN202010895464.9A
Other languages
Chinese (zh)
Other versions
CN112172262B (en
Inventor
刘延斌
汪斌
蒋凯歌
郭伦文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zoomlion Heavy Industry Science and Technology Co Ltd
Original Assignee
Zoomlion Heavy Industry Science and Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zoomlion Heavy Industry Science and Technology Co Ltd filed Critical Zoomlion Heavy Industry Science and Technology Co Ltd
Priority to CN202010895464.9A priority Critical patent/CN112172262B/en
Publication of CN112172262A publication Critical patent/CN112172262A/en
Application granted granted Critical
Publication of CN112172262B publication Critical patent/CN112172262B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a general shape other than plane
    • B32B1/08—Tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/58—Winding and joining, e.g. winding spirally helically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/082—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising vinyl resins; comprising acrylic resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/18—Layered products comprising a layer of metal comprising iron or steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/022—Mechanical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness

Abstract

The invention relates to the field of fiber composite materials, and discloses a multilayer structure and a manufacturing method thereof, a welding gun and a welding machine, wherein the multilayer structure comprises a strip-shaped base body, a fiber composite layer is arranged on the outer peripheral surface of the base body, the fiber composite layer comprises a colloid base material and fiber filaments positioned in the colloid base material, and the fiber composite layer contains 40-60 wt% of the colloid base material; the gun barrel of the welding gun is arranged into the multilayer structure; the welder includes the welding gun. For the multilayer structure of the present invention, it has excellent mechanical and damping properties. When being applied to the welder barrel, even the welder barrel has longer length, its stability is still more superior, and the barrel resists the performance that external impact better, and the stability of welder barrel is better in welding process, is favorable to ensureing welding quality.

Description

Multilayer structure, method for manufacturing the same, welding gun and welding machine
Technical Field
The invention relates to the field of fiber composite materials, in particular to a multilayer structure, a manufacturing method thereof, a welding gun and a welding machine.
Background
The existing deep and narrow hole structure forms generally comprise two forms, namely a box-type structure formed by splicing, and a long and straight integral hollow pipe-type structure, such as a drill rod. For the first box-type structure, when the internal components are required to be welded in the box-type structure, the welding problem of the internal components can be solved by adjusting the process sequence, for example, the internal components are welded firstly, and then the cover plate is welded finally by adopting a single-side welding and double-side forming process. However, for the second integral hollow tube structure, such as a drill rod, which is a steel tube with different tube diameters, when a longer inner key plate is to be welded inside, the following two welding methods are generally adopted at present: the first is manual welding, for the welding of the inner key plate in the large-diameter pipe body, the manual welding can be reluctant, but the welding quality and the welding stability are difficult to ensure, and if the inner key plate in the small-diameter pipe body is welded, the manual welding difficulty is higher, and the quality is more difficult to ensure; secondly, intercepting minor segment body adopts the welding of robot both ends, but can increase the concatenation process of a body girth joint, and the pipe fitting wholeness destroys.
The big main problem of the degree of difficulty of implementing the welding to the inside of the dark narrow opening structure of little pipe diameter is, the length of welder barrel is enough, can stretch into the inside welding of implementing of dark narrow opening from the one end of dark narrow opening structure, but implements the welded in-process, because the barrel stretches into the inside one end of dark narrow opening structure unsettled, receives external force among the welding process, and the reaction force of electric arc all can arouse welder to vibrate during even the welding, leads to welding quality to be difficult to the guarantee.
Disclosure of Invention
The present invention provides a multi-layered structure having superior damping characteristics and a method of manufacturing the same, and a welding torch having the multi-layered structure and a welding machine having the welding torch.
In order to achieve the above object, an aspect of the present invention provides a multilayer structure, including an elongated substrate, a fiber composite layer disposed on an outer circumferential surface of the substrate, the fiber composite layer including a colloidal base material and fiber filaments disposed in the colloidal base material, wherein the fiber composite layer includes 40 to 60 wt% of the colloidal base material.
Preferably, in the fiber composite layer, the extending direction of the fiber filaments is at an angle α relative to the extending direction of the matrix, and the angle α is 15 ° to 55 °.
Preferably, the thickness of the fiber composite layer is 1mm-2.5 mm.
Preferably, the fiber filaments are uniformly distributed in the colloidal matrix; and/or the substrate extends in a straight line.
Preferably, an insulating layer is disposed on the outer circumferential surface of the fiber composite layer.
In a second aspect of the invention, there is provided a welding gun comprising a barrel arranged in a multi-layered configuration according to the invention.
Preferably, the substrate is a copper tube.
In a third aspect of the invention, a welding machine is provided that includes the welding gun.
In a fourth aspect of the present invention, there is provided a method of manufacturing a multilayer structure including an elongated base body having a fiber composite layer provided on an outer peripheral surface thereof, the method including:
winding treatment: fixing the base body on a winding machine, enabling the base body to extend along a straight line, and enabling the winding machine to drive the base body to rotate around an axis; immersing the fiber yarn into the glue solution to obtain a dipped fiber yarn; winding the impregnated fiber yarn on the peripheral surface of the matrix to form an impregnated fiber yarn layer covering the peripheral surface of the matrix;
curing treatment: curing the impregnated fiber filament layer to form a fiber composite layer comprising a colloidal substrate and fiber filaments in the colloidal substrate;
and in the winding step, the viscosity of the glue solution and the residence time of the fiber filaments in the glue solution are controlled, so that the fiber composite layer contains 40-60 wt% of colloid base material.
Preferably, in the winding process, the dipped fiber yarn is wound on the substrate at an angle α with respect to the extending direction of the substrate, the angle α being 15 ° to 55 °, when the dipped fiber yarn is wound on the outer circumferential surface of the substrate.
Preferably, in the winding process, when winding the dipped fiber yarn onto the outer circumferential surface of the substrate, a dipped fiber yarn single layer forming step is included: spirally laying a layer of the impregnated fiber yarns around the axis of the matrix to form an impregnated fiber yarn single layer; and repeating the step of forming the single layer of the dipped cellosilk to form a plurality of single layers of the dipped cellosilk which are overlapped in sequence to form a layer of the dipped cellosilk, so that the thickness of the fiber composite layer is 1mm-2.5 mm.
Preferably, the curing process comprises: and putting the matrix covered with the gum dipping fiber layer on the peripheral surface into a curing furnace for rotary curing.
Preferably, the manufacturing method includes an insulation treatment after the curing treatment, the insulation treatment including: and sleeving the substrate with the fiber composite layer formed on the peripheral surface into an insulating sleeve, wherein the insulating sleeve is a heat-shrinkable sleeve so as to form an insulating layer on the peripheral surface of the fiber composite layer.
With the multilayer structure of the present invention, by controlling the gel content (the weight percentage of the gel base material except for the cellosilk) of the fiber composite layer 2 within the range of 40-60 wt%, the strip-shaped multilayer structure can be made to have excellent mechanical and damping characteristics. When the welding gun and the welding machine are applied to the gun barrel of the welding gun, the stability of the gun barrel is still superior even if the gun barrel of the welding gun has longer length, and the performance of the gun barrel for resisting external impact is better, so that the stability of the gun barrel of the welding gun is better in the welding process, the welding quality is favorably ensured, when the gun barrel of the welding gun is applied to the internal welding operation of a deep and narrow hole structure, the gun barrel of the welding gun with longer length needs to be used, and the longer the length of the gun barrel is, the more remarkable the advantages of the gun barrel with a multilayer structure.
Drawings
Fig. 1 is a schematic view of a cross-section of a multilayer structure according to an embodiment of the present invention, taken perpendicular to the direction of extension.
Description of the reference numerals
1 matrix 2 fiber composite layer 3 insulating layer
Detailed Description
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
In the present invention, it is to be understood that the terms "away", "toward", and the like indicate an orientation or positional relationship corresponding to an orientation or positional relationship in actual use; "inner and outer" refer to the inner and outer relative to the profile of the components themselves. These are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate that the device or component in question must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The invention provides a multilayer structure, which comprises a strip-shaped base body 1, wherein a fiber composite layer 2 is arranged on the outer peripheral surface of the base body 1, the fiber composite layer 2 comprises a colloid base material and fiber yarns positioned in the colloid base material, and the fiber composite layer 2 contains 40-60 wt% of the colloid base material.
With the multilayer structure of the present invention, by controlling the gel content (the weight percentage of the gel base material except for the cellosilk) of the fiber composite layer 2 within the range of 40-60 wt%, the strip-shaped multilayer structure can be made to have excellent mechanical and damping characteristics.
Wherein, the matrix 1 can be linear type, also can be flexible; the material can be selected from metal or nonmetal, for example, any one of copper, iron, stainless steel and aluminum; the substrate 1 may have a circular, square or any suitable cross-section (cross-section perpendicular to the direction of extension), may have a constant or varying cross-section along the direction of extension, and may be hollow, e.g. tubular.
The fiber filaments can be any one or combination of carbon fiber filaments, glass fiber filaments, basalt fibers and aramid fibers. The colloidal matrix may include any one or combination of more of epoxy resin and its fixative, phenolic resin, polypropylene resin, vinyl resin.
In the technical scheme of the application, the fiber composite layer 2 belongs to a strong damping material (for example, the minimum loss factor of the carbon fiber composite material is more than 1), and the fiber composite layer 2 is arranged outside the substrate 1 with a small damping value, such as metal, so that the damping can be improved. Further, the inventors of the present application found that when the gel content of the fiber composite layer 2 (the weight of the gel base material excluding the fiber filaments in the fiber composite layer 2 as a percentage of the weight of the entire fiber composite layer 2) is controlled to be between 40% and 60%, the multilayer structure can be made to have more excellent mechanical and damping characteristics.
For the multilayer structure, along with the increase of the glue content of the fiber composite layer 2, the overall structural mechanical property of the multilayer structure is improved and then reduced, and finally the multilayer structure tends to be stable; with the increase of the gel content, the bonding performance of the fiber composite layer 2 and the matrix 1 is improved, the overall mechanical performance of the multilayer structure is firstly improved, but with the further increase of the gel content of the fiber composite layer 2, the overall mechanical performance is reduced after being improved to a certain degree, and the final strength of the multilayer structure tends to the composite strength of pure resin and the matrix 1. In addition, along with the increase of the gel content of the fiber composite layer 2, the damping of the whole multilayer structure is also improved and then reduced, and in the stage that the damping of the multilayer structure is also improved along with the increase of the gel content of the fiber composite layer 2, the damping of the multilayer structure is mainly influenced by the viscous damping of the fiber yarn and the colloid substrate and the viscous damping of the interface contact part, along with the increase of the gel content of the fiber composite layer 2, the viscous damping of the fiber yarn and the colloid substrate and the viscous damping of the interface contact part are both increased, and the damping of the whole multilayer structure is increased; when the gel content of the fiber composite layer 2 is further increased, the friction damping generated by structural damage and the nonlinear viscous damping generated by local stress concentration are rapidly reduced along with the reduction of the fiber content in the fiber composite layer 2, and the values of the viscous damping of the fiber filaments and the colloid base material and the viscous damping at the interface contact position tend to be stable due to the saturation of the gel content, so that the overall damping of the multilayer structure begins to be reduced and finally tends to be stable. When the gel content of the fiber composite layer 2 is controlled to be between 40% and 60% (weight percentage), the multilayer structure has excellent mechanical and damping characteristics.
When the gun barrel of the welding machine is of the multilayer structure, the gun barrel of the welding machine is equivalent to a cantilever beam structure, the gun barrel with the multilayer structure has better stability due to better mechanical and damping characteristics, has better anti-vibration capability even under the condition of longer length, is not easily influenced by external force to generate vibration, and is favorable for ensuring the welding stability and the welding quality when used for the internal welding operation of a deep and narrow hole structure.
Further preferably, for the multilayer structure, the fiber composite layer 2 has an angle α of the extending direction of the fiber filaments with respect to the extending direction of the matrix 1, the angle α being 15 ° to 55 °. In other words, in the fiber composite layer 2, the fiber filaments are wound around the axis of the matrix 1 at an angle α relative to the extending direction of the matrix 1, the winding angle α affects the contact damping of the contact surface of the fiber filaments and the matrix 1 and the friction damping generated by the structural friction damage, and when the angle α is in the range of 15 ° to 55 °, the loss factor of the fiber composite layer 2 is larger, so that the multilayer structure has better damping.
In addition, the thickness of the fiber composite layer 2 is 1mm-2.5mm, and the damping of the whole multilayer structure is increased along with the increase of the thickness of the fiber composite layer 2, but the increase of the thickness of the fiber composite layer 2 can bring about the problems of cost increase and heaviness of the multilayer structure, and when the thickness of the fiber composite layer 2 is controlled within the range, the problems of cost and heaviness of the multilayer structure 2 can not be excessively increased while a good damping effect is obtained.
Ideally, the fiber filaments are uniformly distributed in the colloid base material, so that each part of the multilayer structure obtains better mechanical and damping characteristics; and/or the base body 1 extends along a straight line, and the base body 1 is in a long straight shape, such as a long straight tubular shape.
Further, an insulating layer 3 may be provided on the outer peripheral surface of the fiber composite layer 2 as necessary. The insulating layer 3 may be one or a combination of polyolefin insulating layer, PVC insulating layer and PET insulating layer.
In a second aspect of the invention, there is provided a welding gun comprising a barrel arranged in a multi-layered configuration according to the invention. In addition, in the welding gun, the substrate 1 is often a copper tube, and even if the gun barrel of the welding gun includes a copper tube, the outer peripheral surface of the copper tube is covered with the fiber composite layer 2, and the outer peripheral surface of the fiber composite layer 2 may be selectively covered with the insulating layer 3, and when the fiber composite layer 2 is formed of an insulating fiber and a gel, the fiber composite layer 2 itself has an insulating effect, and the insulating layer 3 may be omitted. The barrel can be a long straight barrel, the length of the barrel can be more than or equal to 1500mm, and when the length is longer, the barrel has more obvious advantages in impact resistance stability compared with a common copper tube barrel.
The third aspect of the invention also provides a welding machine comprising a welding gun according to the invention.
By using the welding gun and the welding machine, even if the gun barrel of the welding gun has longer length, the stability of the gun barrel is still superior, and the performance of resisting external impact of the gun barrel is better, so that the stability of the gun barrel of the welding gun is better in the welding process, the welding quality is favorably ensured, when the gun barrel of the welding gun is applied to the internal welding operation of a deep and narrow hole structure, the gun barrel of the welding gun with longer length needs to be used, and the longer the length of the gun barrel is, the more remarkable the advantages of the gun barrel with a multilayer structure are. Specifically, in the gun barrel, the copper pipe of the base body 1 ensures the normal function of the welding gun, the fiber composite layer 2 increases the anti-vibration capability of the gun barrel, reduces the frequency vibration of the welding gun caused by external force, and controls the welding gun to be in a welding allowable range, for example, if the fiber yarn is carbon fiber yarn, the fiber yarn is a strong damping material, the minimum loss factor is more than 1, the damping value is far higher than that of copper (the minimum loss factor is 0.002), the damping of the welding gun can be remarkably improved after the fiber composite layer 2 is compounded, and the capability of the welding gun for resisting external impact in the welding process is stronger. Also, it will be appreciated that the barrel may be used in conjunction with different types of welding guns and, in turn, different types of welding machines.
In a fourth aspect of the present invention, there is provided a method for manufacturing a multilayer structure including a long-strip-shaped base 1, and a fiber composite layer 2 provided on an outer peripheral surface of the base 1, the method comprising:
winding treatment: fixing the base body 1 on a winding machine, enabling the base body 1 to extend along a straight line, and enabling the winding machine to drive the base body 1 to rotate around an axis; immersing the fiber yarn into the glue solution to obtain a dipped fiber yarn; winding the impregnated fiber yarn on the outer peripheral surface of the matrix 1 to form an impregnated fiber yarn layer covering the outer peripheral surface of the matrix 1;
curing treatment: curing the impregnated fiber layer to form a fiber composite layer 2, the fiber composite layer 2 comprising a colloidal substrate and fiber filaments in the colloidal substrate;
in the winding step, the viscosity of the glue solution and the residence time of the fiber filaments in the glue solution are controlled, so that the fiber composite layer 2 contains 40-60 wt% of the colloid base material.
In the method for manufacturing a multilayer structure of the present invention, the gel content (the weight percentage of the gel base material excluding the cellosilk) of the fiber composite layer 2 is controlled within a range of 40 to 60 wt%, so that the long strip-shaped multilayer structure can have excellent mechanical and damping characteristics.
Wherein, the matrix 1 can be linear type, also can be flexible; the material can be selected from metal or nonmetal, for example, any one of copper, iron, stainless steel and aluminum; the substrate 1 may have a circular, square or any suitable cross-section (cross-section perpendicular to the direction of extension), may have a constant or varying cross-section along the direction of extension, and may be hollow, e.g. tubular. The fiber filaments can be any one or combination of carbon fiber filaments, glass fiber filaments, basalt fibers, aramid fibers and the like. The glue solution may include any one or combination of more of epoxy resin and its fixative, polypropylene resin, phenolic resin, etc. In the winding step, the residence time of the fiber filaments in the glue solution can be adjusted according to the viscosity of the glue solution used, so that the finally formed fiber composite layer 2 contains 40-60 wt% of the glue base material.
In the winding process, when the impregnated fiber yarn is wound on the outer circumferential surface of the substrate 1, the impregnated fiber yarn is wound on the substrate 1 at an angle α with respect to the extending direction of the substrate 1, where the angle α is 15 ° to 55 °, and it is understood that the winding angle α of the impregnated fiber yarn may be constant or variable during winding as long as the variation range is 15 ° to 55 °.
The speed of rotation of the winding machine may be adjustable, and the substrate 1 may be adjusted to rotate at a uniform speed about the axis during the winding process.
In addition, in the winding process, when the impregnated fiber yarn is wound on the outer circumferential surface of the substrate 1, the method includes a single-layer impregnated fiber yarn forming step of: spirally laying the impregnated fiber yarns one layer around the axis of the matrix 1 to form an impregnated fiber yarn single layer; and repeating the step of forming the single layer of the dipped cellosilk to form a plurality of single layers of the dipped cellosilk which are overlapped in sequence to form a layer of the dipped cellosilk, so that the thickness of the fiber composite layer 2 is 1mm-2.5 mm. In other words, the impregnated fiber layer includes a plurality of impregnated fiber monolayers overlapped together, during the manufacturing process, the impregnated fiber layer is finally formed by laying a plurality of impregnated fiber monolayers back and forth along the substrate 1, and the thickness of the fiber composite layer 2 obtained after curing is 1mm-2.5 mm.
And, the curing process comprises: and after winding treatment, putting the matrix 1 with the outer peripheral surface covered with the gum dipping fiber yarn layer into a curing furnace for rotary curing.
Further, according to need, the manufacturing method includes an insulation treatment after the curing treatment, the insulation treatment including: and sleeving the substrate 1 with the fiber composite layer 2 formed on the peripheral surface into an insulating sleeve, wherein the insulating sleeve is a heat-shrinkable sleeve, so as to form an insulating layer 3 on the peripheral surface of the fiber composite layer 2.
For example, the insulating layer 3 may be one or a combination of polyolefin insulating layer, PVC insulating layer and PET insulating layer. The insulating layer 3 may not be formed by a heat shrinkable sleeve, and the insulating layer 3 may be formed by a process such as coating an insulating coating. When the multilayer structure is a welding gun barrel, the insulating layer 3 can realize insulating protection, and the phenomenon that the fiber composite layer 2 is burnt due to electric arc in the welding process is avoided.
Examples and comparative examples:
the present invention will be described in detail below by way of examples and comparative examples.
The gun barrel of the welding gun was manufactured in each of examples 1 to 4 and comparative examples 1 and 2 by the following steps:
winding treatment: fixing a welding gun barrel base body (copper pipe) on a winding machine, enabling the welding gun barrel base body to extend along a straight line, and enabling the winding machine to drive the welding gun barrel base body to rotate around an axis; immersing the carbon fiber yarn into the glue solution to obtain an impregnated fiber yarn; winding the dipped cellosilk on the outer peripheral surface of the welding gun barrel matrix to form a dipped cellosilk layer covering the outer peripheral surface of the welding gun barrel matrix;
curing treatment: placing the welding gun barrel matrix wound with the impregnated fiber yarn layer in a curing oven at the temperature of 80 ℃ to cure the impregnated fiber yarn layer so as to form a fiber composite layer on the outer peripheral surface of the welding gun barrel matrix;
wherein the viscosity of the glue solution and the residence time of the fiber filaments in the glue solution in the winding step are controlled so that the weight percentages of the colloidal base materials contained in the fiber composite layers are different, the weight percentages (expressed by P) of the colloidal base materials contained in the fiber composite layers in examples 1 to 4 and comparative examples 1 and 2 are as shown in the following Table 1,
and, in the winding step, when winding the dipped fiber thread around the outer circumferential surface of the gun barrel base body of the welding gun, the method includes a single layer forming step of the dipped fiber thread: laying a layer of the dipped cellosilk spirally around the axis of the gun barrel matrix of the welding gun to form a single layer of the dipped cellosilk; repeating the step of forming a single layer of impregnated fiber filaments to form a plurality of single layers of impregnated fiber filaments that are sequentially overlapped to form a layer of impregnated fiber filaments such that the fiber composite layer has a thickness, the thickness (denoted by T) of the fiber composite layer in examples 1 to 4 and comparative examples 1 and 2 being as shown in table 1 below;
wherein the dipped fiber yarn is wound on the gun barrel substrate at an angle α with respect to the extending direction of the gun barrel substrate when the dipped fiber yarn is wound on the outer circumferential surface of the gun barrel substrate, and the values of the angle α in examples 1 to 4 and comparative examples 1 and 2 are as shown in table 1 below;
wherein the carbon fiber raw material is a T300 type tow of Dongli company; the glue solution comprises epoxy resin and a curing agent thereof, and the mass ratio of the epoxy resin to the curing agent is 5: 1; the length of the torch barrel substrate was 1500mm, and the torch barrel substrates used in examples 1 to 4 and comparative examples 1 and 2 were identical in size.
In examples 1 to 4 and comparative examples 1 and 2, after the gun barrel is manufactured, one end of the gun barrel is fixed on the detection pedestal, the other end is suspended, and then the amplitude sensor is fixed on the cantilever end of the gun barrel to measure the amplitude; in examples 1 to 4 and comparative examples 1 and 2, pulses F0 × t of the same magnitude were applied to the same corresponding positions of the gun barrel, and the maximum amplitude (indicated by a) of the gun barrel subjected to the pulses and the time (indicated by t) required for the amplitude to decay to 0.1A were measured, and the results are shown in table 1, respectively.
In examples 1-4 and comparative examples 1 and 2, the gun barrel of each welding gun is mounted on the matched welding gun (the welding guns used in examples 1-4 and comparative examples 1 and 2 are the same), the welding gun is used for welding parts in a small-pipe-diameter deep-narrow-hole structure, specifically, inner key plate welding (the length of a welding seam is 800mm) of a mechanical lock rod three-section rod (the sizes and the materials of the welding seam are the same in the mechanical lock rod three-section rod and the inner key plate thereof in examples 1-4 and comparative examples 1 and 2), the quality of the welding seam is evaluated through the appearance quality (incomplete welding, welding deviation, welding leakage and the like) of the welding seam after welding and the root fusion condition (root fusion) of the sampling welding seam of random sections of the welding structure, and the quality of the welding seam is evaluated according to the B-level welding seam quality requirement.
TABLE 1
Figure BDA0002658299070000111
Figure BDA0002658299070000121
The results in table 1 show that when the glue content of the composite layer of the multilayer structure is controlled to be 40-60 wt% and the winding angle is controlled to be 15-55 degrees, the multilayer structure has better mechanical and damping characteristics, namely, the formed gun barrel of the welding gun has superior mechanical and damping characteristics, the stability in the using process is superior, and the performance of the gun barrel for resisting external impact is better, so that the stability of the gun barrel of the welding gun is favorable for ensuring the welding quality in the welding process, and when the gun barrel is applied to the internal welding operation of a deep and narrow hole structure, the quality of the welded seam is obviously superior to that of other comparative examples.
In the description herein, reference to the terms "one embodiment," "some embodiments," "for example," or "example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples and features of the various embodiments or examples described in this specification can be combined and combined by those skilled in the art without contradiction.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention. Including each of the specific features, are combined in any suitable manner. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.

Claims (13)

1. The multilayer structure comprises a strip-shaped base body (1), wherein a fiber composite layer (2) is arranged on the outer peripheral surface of the base body (1), and is characterized in that the fiber composite layer (2) comprises a colloid base material and fiber yarns positioned in the colloid base material, and the fiber composite layer (2) contains 40-60 wt% of the colloid base material.
2. The multilayer structure according to claim 1, characterized in that in the fiber composite layer (2) the fiber filaments extend in a direction at an angle a of 15 ° -55 ° with respect to the direction of extension of the matrix (1).
3. The multilayer structure according to claim 1, characterized in that the thickness of the fiber composite layer (2) is 1mm-2.5 mm.
4. The multilayer structure of claim 1, wherein the fiber filaments are uniformly distributed in the colloidal matrix; and/or the base body (1) extends in a straight line.
5. The multilayer structure according to claim 1, characterized in that an insulating layer (3) is provided on the outer circumferential surface of the fiber composite layer (2).
6. A welding gun comprising a barrel, characterized in that the barrel is provided as a multi-layered structure according to any one of claims 1-5.
7. The welding gun according to claim 6, characterized in that the base body (1) is a copper tube.
8. A welding machine characterized in that it comprises a welding gun according to claim 6 or 7.
9. A method of manufacturing a multilayer structure comprising an elongated base body (1), a fibre composite layer (2) being provided on the outer circumferential surface of the base body (1), characterized in that the method comprises:
winding treatment: fixing the base body (1) on a winding machine, enabling the base body (1) to extend along a straight line, and enabling the winding machine to drive the base body (1) to rotate around an axis; immersing the fiber yarn into the glue solution to obtain a dipped fiber yarn; winding the impregnated fiber yarn on the peripheral surface of the matrix (1) to form an impregnated fiber yarn layer covering the peripheral surface of the matrix (1);
curing treatment: curing the impregnated fiber layer to form a fiber composite layer (2), the fiber composite layer (2) comprising a colloidal substrate and fiber filaments located in the colloidal substrate;
in the winding step, the viscosity of the glue solution and the residence time of the fiber filaments in the glue solution are controlled, so that the fiber composite layer (2) contains 40-60 wt% of the glue base material.
10. The method for manufacturing a multilayer structure according to claim 9, characterized in that in the winding process, the impregnated fiber yarn is wound on the substrate (1) at an angle α of 15 ° to 55 ° with respect to an extending direction of the substrate (1) when the impregnated fiber yarn is wound on the outer circumferential surface of the substrate (1).
11. The method for manufacturing a multilayer structure according to claim 9, characterized by comprising, in winding processing, a single-layer forming step of the dipped fiber yarn when winding the dipped fiber yarn onto the outer peripheral surface of the substrate (1): spirally laying a layer of the impregnated fiber yarn around the axis of the matrix (1) to form an impregnated fiber yarn single layer; and repeating the step of forming the single layer of the dipped fiber yarns to form a plurality of single layers of the dipped fiber yarns which are overlapped in sequence to form a layer of the dipped fiber yarns, so that the thickness of the fiber composite layer (2) is 1-2.5 mm.
12. The method of manufacturing a multilayer structure according to claim 9, wherein the curing process comprises: and putting the matrix (1) with the outer peripheral surface covered with the gum dipping fiber yarn layer into a curing furnace for rotary curing.
13. The method of manufacturing a multilayer structure according to claim 9, characterized in that the manufacturing method includes an insulation treatment after the curing treatment, the insulation treatment including: and sleeving the substrate (1) with the fiber composite layer (2) formed on the peripheral surface into an insulating sleeve, wherein the insulating sleeve is a heat-shrinkable sleeve, so as to form an insulating layer (3) on the peripheral surface of the fiber composite layer (2).
CN202010895464.9A 2020-08-31 2020-08-31 Welding gun, welding machine and manufacturing method of gun barrel of welding gun Active CN112172262B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010895464.9A CN112172262B (en) 2020-08-31 2020-08-31 Welding gun, welding machine and manufacturing method of gun barrel of welding gun

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010895464.9A CN112172262B (en) 2020-08-31 2020-08-31 Welding gun, welding machine and manufacturing method of gun barrel of welding gun

Publications (2)

Publication Number Publication Date
CN112172262A true CN112172262A (en) 2021-01-05
CN112172262B CN112172262B (en) 2022-06-14

Family

ID=73925182

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010895464.9A Active CN112172262B (en) 2020-08-31 2020-08-31 Welding gun, welding machine and manufacturing method of gun barrel of welding gun

Country Status (1)

Country Link
CN (1) CN112172262B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113650273A (en) * 2021-08-30 2021-11-16 河北工业大学 Light high-pressure-resistant composite pipe, preparation method and preparation system
CN116118167A (en) * 2023-04-17 2023-05-16 常州特尔玛科技股份有限公司 Production line for preparing welding gun insulating blank pipe and production method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201559018U (en) * 2009-11-09 2010-08-25 山西北方风雷工业集团有限公司 Self-cooling gas protection welding gun body assembly for narrow welding spaces
CN103009716A (en) * 2011-09-26 2013-04-03 蓝星(北京)化工机械有限公司 Carbon fiber composite, preparation method thereof and tank
CN104100777A (en) * 2013-04-08 2014-10-15 上海启鹏工程材料科技有限公司 FRP (fiber reinforced plastic) reinforced fiber composite metal pipe as well as manufacturing equipment and manufacturing method of FRP reinforced fiber composite metal pipe
CN107345598A (en) * 2016-05-04 2017-11-14 广州金发碳纤维新材料发展有限公司 A kind of multiple tube and its manufacture and installation method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201559018U (en) * 2009-11-09 2010-08-25 山西北方风雷工业集团有限公司 Self-cooling gas protection welding gun body assembly for narrow welding spaces
CN103009716A (en) * 2011-09-26 2013-04-03 蓝星(北京)化工机械有限公司 Carbon fiber composite, preparation method thereof and tank
CN104100777A (en) * 2013-04-08 2014-10-15 上海启鹏工程材料科技有限公司 FRP (fiber reinforced plastic) reinforced fiber composite metal pipe as well as manufacturing equipment and manufacturing method of FRP reinforced fiber composite metal pipe
CN107345598A (en) * 2016-05-04 2017-11-14 广州金发碳纤维新材料发展有限公司 A kind of multiple tube and its manufacture and installation method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113650273A (en) * 2021-08-30 2021-11-16 河北工业大学 Light high-pressure-resistant composite pipe, preparation method and preparation system
CN116118167A (en) * 2023-04-17 2023-05-16 常州特尔玛科技股份有限公司 Production line for preparing welding gun insulating blank pipe and production method thereof

Also Published As

Publication number Publication date
CN112172262B (en) 2022-06-14

Similar Documents

Publication Publication Date Title
CN112172262B (en) Welding gun, welding machine and manufacturing method of gun barrel of welding gun
EP3721125B1 (en) High-pressure pipe with pultruded elements and method for producing the same
JP5956602B2 (en) Accumulator
CN106062896A (en) Coated overhead conductor
WO2013128800A1 (en) Method for manufacturing high pressure gas tank
US3886024A (en) Thick-walled, fiber-reinforced composite structures and method of making same
US20020158392A1 (en) Multihelical composite spring
US10240654B2 (en) Hybrid spring device
CN101752044A (en) Core rod of ultra-high-voltage post composite insulator and manufacturing method thereof
JP2010139068A (en) Force transmitting assembly for composite fiber tie rod
RU2000122448A (en) METHOD FOR CONNECTING TWO PIPES FROM STRENGTHENED THERMOPLASTIC MATERIAL
KR830002180B1 (en) Hose manufacturing method
WO2014075188A1 (en) Fiber reinforced tape or sheet for reinforcing pipe
CN105189095B (en) Method for manufacturing multiple tube
JP2020142418A (en) Method for manufacturing pressure vessel and pressure vessel
JPH04174935A (en) Tubular knitting yarn using article and manufacture thereof and resin applicator used for said method
US7464497B2 (en) Spear gun shaft and method of making same
JP2005113963A (en) Pressure resistant container manufacturing method
JP2017082967A (en) Wire for coil spring and coil spring
US20160003289A1 (en) Filament Wound Composite Tie Rod
JP2006169714A (en) High-strength fiber composite material cable
JP3568924B2 (en) fishing rod
US9611585B2 (en) Method and apparatus for curing of pre impregnated synthetic components in situ
JP6922393B2 (en) Pressure vessel
US7703480B1 (en) Composite tubes and method of manufacturing same

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
GR01 Patent grant
GR01 Patent grant