KR101847987B1 - Method for manufacturing water-tight corrugated steel pipe using water-tight adhesive agent - Google Patents
Method for manufacturing water-tight corrugated steel pipe using water-tight adhesive agent Download PDFInfo
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- KR101847987B1 KR101847987B1 KR1020170136684A KR20170136684A KR101847987B1 KR 101847987 B1 KR101847987 B1 KR 101847987B1 KR 1020170136684 A KR1020170136684 A KR 1020170136684A KR 20170136684 A KR20170136684 A KR 20170136684A KR 101847987 B1 KR101847987 B1 KR 101847987B1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/12—Making tubes or metal hoses with helically arranged seams
- B21C37/123—Making tubes or metal hoses with helically arranged seams of coated strip material; Making multi-wall tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/12—Making tubes or metal hoses with helically arranged seams
- B21C37/124—Making tubes or metal hoses with helically arranged seams the tubes having a special shape, e.g. with corrugated wall, flexible tubes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D171/00—Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain; Coating compositions based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/02—Rigid pipes of metal
- F16L9/06—Corrugated pipes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
본 발명은 오수 및 하수의 배수, 상수 및 산업용수의 공급 등의 용도로 사용되는 파형강관에 관련한 수밀성 접착제를 이용하여 수밀성이 개선된 파형강관(corrugated steel pipe)의 제조방법에 관한 것이다.The present invention relates to a method of manufacturing a corrugated steel pipe with improved watertightness by using a water-tight adhesive relating to a corrugated steel pipe used for the purpose of supplying sewage and sewage drainage, water and industrial water.
일반적으로 파형강관(corrugated steel pipe)은 용융아연도금 강판을 파형(물결)으로 굴곡시켜 나선형으로 감으면서 좌우측의 단부를 접어서 결속시켜 결속부분에 락심(lock seam)부가 형성되면서 관형상으로 제조된다.Generally, a corrugated steel pipe is formed into a pipe shape by bending a hot-dip galvanized steel sheet into a corrugated shape and winding the steel sheet in a spiral shape while folding end portions of the left and right sides to form a lock seam.
상기 용융아연도금 파형강관은 경량이고 취급이 용이하며 또 조립 및 시공이 간편하여 오수 및 하수의 배수관, 상수 및 산업용수의 공급관으로 사용되고 있지만, 아연도금 파형강관을 오수 및 하수의 배수관, 상수 및 산업용수의 공급관을 지하에 매설하여 시공하는 경우에 시간이 경과함에 따라 토압, 침하작용 등으로 파형강관의 락심(lock seam)부에 미세한 변형이 발생하여 변형된 틈 사이로 누수현상이 나타나거나 파형강관의 내부로 지하수 또는 침출수 등의 유입에 따른 문제점이 발생하고 있다.The hot-dip galvanized corrugated steel pipe is lightweight, easy to handle, easy to assemble and construct, and is used as a drain pipe for sewage and sewage, and as a supply pipe for water for industrial use. However, galvanized corrugated steel pipe is used for sewage and sewage pipes, When the water supply pipe is buried underground, there is a slight deformation in the lock seam part of the corrugated steel pipe due to the earth pressure and the settling action as time passes, so that there is a leakage phenomenon between the deformed gaps, There is a problem caused by inflow of ground water or leachate into the inside.
상기한 파형강관의 누수방지를 위하여 파형강관의 표면을 아스팔트로 코팅하거나 폴리에틸렌 필름으로 융착시켜 누수 등의 문제를 해결하여 왔으나 시간이 경과함에 따라 코팅층이 경화되어 크랙현상이 발생하거나, 열에 의해 부착된 합성수지 필름이 강관으로부터 박리되어 만족할 만한 누수방지 효과를 얻지 못하고 있다.In order to prevent leakage of the corrugated steel pipe, the surface of the corrugated steel pipe is coated with asphalt or fused with a polyethylene film to solve the problem of leakage. However, cracks may occur due to curing of the coating layer over time, The synthetic resin film is peeled from the steel pipe and satisfactory waterproofing effect is not obtained.
그리고 다른 방법으로 파형강관의 락심(lock seam)부의 누수현상을 방지하는 기술과 관련한 선행기술을 예로 들면, 특허문헌1에 외주면에 돌출부가 나선형으로 형성되어 있는 양 파형관을 연결함에 있어서, 연결하고자 하는 양 파형관의 연결 부위에 대면하는 수팽윤성 수지층; 상기 수팽윤성 수지층을 내면에 포함하고, 시공시 양 파형관에 접착되는 열접착성 수지층; 및 상기 열접착성 수지층을 내면에 포함하는 최외곽층인 연질 쿠션층으로 이루어진 3중 구조로 구성되는 파형관 연결용 수밀 시트를 개시하고 있으며, 특허문헌2에 강판의 일측 가장자리에 절곡부를 형성하는 제1단계; 이웃하는 강판의 상기 절곡부를 서로 결합하여 락심부을 형성하는 제2단계; 상기 락심부에 구멍을 뚫는 제3단계; 및 상기 구멍에 밀봉재를 주입하는 제4단계를 포함하되, 상기 제3단계에서 상기 구멍은 강판 끝단 전방에 존재하는 스페이스(S)에 형성되며, 상기 밀봉재는 상기 강판의 맞닿는 부위에 도포되는 것을 특징으로 하는 파형강관 제조방법을 개시하고 있으며, 특허문헌3, 특허문헌4에도 파형강관의 제조하는 과정 락심(lock seam)부에 수밀재를 삽입하는 기술을 개시하고 있으며 상기 선행기술은 점탄성을 갖는 페이스트상 내지 고상의 수밀재를 삽입하는 기술로 공정이 까다롭고 수밀재가 완전하게 안착하지 못하는 문제점이 있다.Another prior art related to a technique for preventing the leakage of a lock seam part of a corrugated steel pipe is disclosed in Japanese Patent Application Laid-Open Publication No. 2002-229902. In connection with a double-sided corrugated pipe having a spiral protrusion on the outer circumferential surface, A water swellable resin layer facing the connecting portion of both corrugated tubes; A thermally adhesive resin layer which comprises the water-swellable resin layer on the inner surface and is adhered to the both corrugated tubes at the time of application; And a soft cushion layer which is an outermost layer including the thermally adhesive resin layer on the inner surface, and
본 출원인은 파형강관의 락심(lock seam)부의 수밀성에 특히 적합한 접착제을 개발하고 또 이를 이용하여 간단한 공정에 의해 락심(lock seam)부의 수밀성이 개선되는 것을 확인하고 본 발명을 완성하였다.The present applicant has developed an adhesive particularly suitable for the water tightness of a lock seam part of a corrugated steel pipe, and confirmed that the water tightness of the lock seam part is improved by a simple process using the same and completed the present invention.
본 발명은 오수 및 하수의 배수관, 상수 및 산업용수의 공급관으로 사용되는 파형강관을 수밀성 접착제를 이용하여 수밀성을 개선한 파형강관의 제조방법을 목적으로 하며, 보다 상세하게는 오수 및 하수의 배수관, 상수 및 산업용수의 공급관으로 사용되는 파형강관의 락심(lock seam)부의 수밀성에 특히 적합한 수 경화성 및 수팽윤성의 접착제를 이용하여 간단한 공정에 의해 파형강관의 락심(lock seam)부를 접착하고 밀봉하여 수밀성이 개선된 파형강관(corrugated steel pipe)을 제조하는 방법의 제공을 목적으로 하는 것이다.The present invention relates to a method of manufacturing a corrugated steel pipe that improves the watertightness of a corrugated steel pipe used as a drain pipe for sewage and sewage, a supply pipe for water and industrial water, and a drain pipe for sewage and sewage, The lock seam part of the corrugated steel pipe is bonded and sealed by a simple process using a water-curable and water-swellable adhesive particularly suitable for the water tightness of the lock seam part of the corrugated steel pipe used as the supply pipe of the constant and industrial water, And to provide a method for manufacturing such an improved corrugated steel pipe.
본 발명의 목적인 수밀성 접착제를 이용한 수밀성 개선 파형강관의 제조방법을 위한 해결수단으로는 a). 파형으로 성형된 용융아연도금 파형강판(F)을 연속으로 진행시키면서 용융아연도금 파형강판(F)의 좌, 우측 단부에 락심(lock seam)부를 형성하는 제1 및 제2 락심 절곡부(A, B)를 형성하는 제 1단계와, b). 상기 제1 및 제2 락심 절곡부(A, B)의 표면(A1, B1)으로 접착제 공급관(C)으로부터 공급되는 실릴-말단 폴리우레탄 및 실릴-말단 폴리에테르를 주 성분으로 하는 수밀성 접착제(W)를 도포하는 제 2단계 및 c). 상기 제1 및 제2 락심 절곡부(A, B)가 맞물리게 결합되도록 중첩시켜 락심(lock seam)부를 형성하고 연속하여 나선상으로 감으면서 관형태로 제작하는 제 3단계를 포함하는 수밀성 개선 용융아연도금 파형강관(FT)을 제조하는 것으로 이루어진다.As a solution for the method of manufacturing a watertight refractory corrugated steel pipe using the watertight adhesive for the purpose of the present invention, a). The first and second fast bending portions A and B forming a lock seam at the left and right ends of the hot-dip galvanized corrugated steel sheet F while continuing the hot-dip galvanized corrugated steel sheet F formed in the corrugated shape, B), and b). A water-tight adhesive (W (W)) composed mainly of a silyl-terminated polyurethane and a silyl-terminated polyether supplied from an adhesive supply pipe (C) to surfaces A1 and B1 of the first and second sectional bending portions (A and B) ), And c). And a third step of overlapping the first and second axial bending portions (A, B) so that the first and second axial bending portions (A, B) are engaged with each other to form a lock seam portion and successively spirally winding the same to form a tubular shape. And manufacturing a corrugated steel pipe (FT).
상기 본 발명에 따른 용융아연도금 파형강관(FT)의 제조공정은 본 발명이 속하는 기술 분야에 잘 알려진 기술이며, 예를 들면, 용융아연도금강판을 연속으로 공급하면서 파형성형기를 통과시켜 파형으로 성형한 용융아연도금 파형강판(F)의 좌, 우측 양단를 절곡하여 락심(lock seam)부를 형성하는 제1 및 제2 락심 절곡부를 형성하고, 연속하여 진행하면서 락심(lock seam)부 형성기에서 제1 및 제2 락심 절곡부가 맞물리게 결합되면서 압착되어 락심(lock seam)부가 형성되고, 이어서 나선상으로 감아 관형태가 되면서 용융아연도금 파형강관이 연속적으로 제조된다.The manufacturing process of the hot-dip galvanized steel pipe (FT) according to the present invention is well known in the art to which the present invention pertains. For example, the hot dip galvanized steel sheet may be continuously fed through a wave- The first and second axial bending portions are formed by bending both the left and right ends of a hot-dip galvanized corrugated steel sheet F to form a lock seam portion. The first and second axial bend portions are formed continuously in the lock seam forming machine, The second axial bend is engaged while being engaged and the lock seam is formed, and then the molten zinc plated corrugated steel pipe is continuously produced while being spirally wound into a tube shape.
상기 본 발명에 따른 제 2단계의 실릴-말단 폴리우레탄(Silyl-terminated polyurethanes; SPUR) 및 실릴-말단 폴리에테르(Silyl-terminated polyurethanes; STPE)를 주 성분으로 하는 수밀성 접착제(W)는 실릴-말단 폴리우레탄(SPUR) 100중량부에 대하여 실릴-말단 폴리에테르(STPE) 20 ~ 30중량부, 가소제 10 ~ 50중량부, 충진제 20 ~ 55중량부, 수팽창성 충진제 10 ~ 20중량부, 접착부여제 1 ~ 15중량부, 경화촉매 0.2 ~ 5중량부로 조성된 수 경화성 및 수 팽창성 접착제로 이루어진다.The water-tight adhesive (W) composed mainly of silyl-terminated polyurethanes (SPUR) and silyl-terminated polyurethanes (STPE) in the second step according to the present invention has a silyl-terminated polyurethane 20 to 30 parts by weight of a silyl-terminated polyether (STPE), 10 to 50 parts by weight of a plasticizer, 20 to 55 parts by weight of a filler, 10 to 20 parts by weight of a water-swellable filler, 1 to 15 parts by weight of a curing catalyst and 0.2 to 5 parts by weight of a curing catalyst.
본 발명에 따른 상기 실릴-말단 폴리우레탄(Silyl-terminated polyurethanes; SPUR)은 공지된 화합물로 시판되고 있으며, 다양한 방법으로 제조될 수 있다. 예를 들어 디이소시아네이트를 반응시켜 하이드록시 말단 폴리우레탄 예비중합체를 형성하고, 이를 이소시아네이트 말단 실란과 반응시켜 실란변성 폴리우레탄을 형성할 수 있으며, 다른 방법으로는 디이소시아네이트를 폴리에테르 폴리올과 반응시켜 이소시아네이트 말단 폴리우레탄 예비중합체를 합성한 다음, 1차 아미노 실란으로 말단-캡핑(end-capping)하거나, 2차 아민 관능기를 가진 아스파르테이트 실란과 이소시아네이트 말단의 예비중합체를 반응시켜, 실란변성 폴리우레탄을 형성하여 제조할 수 있다.The silyl-terminated polyurethanes (SPURs) according to the present invention are commercially available as known compounds and can be prepared by various methods. For example, a diisocyanate may be reacted to form a hydroxy-terminated polyurethane prepolymer, which may be reacted with an isocyanate-terminated silane to form a silane-modified polyurethane. Alternatively, a diisocyanate may be reacted with a polyether polyol to form an isocyanate End polyurethane prepolymer was synthesized and then end-capped with primary aminosilane or reacted with aspartate silane having a secondary amine functional group and a prepolymer at the isocyanate end to obtain a silane-modified polyurethane .
또 상기 실릴-말단 폴리에테르(Silyl-terminated polyether; STPE) 역시 잘 알려진 공지된 화합물로 시판되고 있으며, 폴리프로필렌 옥사이드 폴리에테르와 실란의 반응에 의해 제조할 수 있다.The silyl-terminated polyether (STPE) is also commercially available as a well-known compound and can be prepared by reacting a polypropylene oxide polyether with a silane.
상기 본 발명에 따른 실릴-말단 폴리우레탄(Silyl-terminated polyurethanes; SPUR) 및 실릴-말단 폴리에테르(Silyl-terminated polyether; STPE)는 5,000Ccst ~ 50,000cst의 점도를 나타내는 폴리머를 선택하는 것이 바람직하다.The silyl-terminated polyurethane (SPUR) and the silyl-terminated polyether (STPE) according to the present invention preferably have a viscosity of 5,000 C to 50,000 cSt.
본 발명에 따른 가소제로는 프탈레이트계 가소제인 DOP(dioctyl phthalate), DINP(diisononyl phthalate), DIDP(diisodecyl phthalate)로부터 선택되는 하나 이상의 성분을 배합하며, 가소제는 본 발명에 따른 작업성 내지 토출성에 영향을 주기 때문에 실릴-말단 폴리우레탄(SPUR) 100중량부에 대하여 10 ~ 50중량부로 조성되는 것이 바람직하다.As the plasticizer according to the present invention, one or more components selected from phthalate plasticizers dioctyl phthalate (DOP), diisononyl phthalate (DINP) and diisodecyl phthalate (DIDP) are mixed. It is preferably 10 to 50 parts by weight based on 100 parts by weight of the silyl-terminated polyurethane (SPUR).
상기 충진제로는 본 발명에 따른 접착제의 경도 및 인장강도의 향상을 위하여 선택되며, 탄산칼슘, 건식 실리카(Fumed silica; SiO2) 및 이산화티탄(TiO2)으로부터 선택되는 하나 이상의 성분을 배합한다.The filler is selected so as to improve the hardness and tensile strength of the adhesive according to the present invention and comprises at least one component selected from calcium carbonate, fumed silica (SiO 2 ) and titanium dioxide (TiO 2 ).
또 상기 수 팽창성 충전제로 고흡수성수지(Super absorbent polyme; SAP)는 아크릴산과 가성소다의해 제조되는 합성수지로 널리 시판되고 있으며, 실릴-말단 폴리우레탄(SPUR) 100중량부에 대하여 10 ~ 20중량부를 배합하며, 상기 수팽창성 충진제는 본 발명에 따른 접착제에 조성되어 물에 의해 팽창되면서 치밀한 밀봉(실링)성을 나타내므로 누수방지를 보다 완전하게 달성한다.Super absorbent poly (SAP) as a water-swellable filler is widely marketed as a synthetic resin prepared by acrylic acid and caustic soda, and is mixed with 10-20 parts by weight of 100 parts by weight of silyl-terminated polyurethane (SPUR) And the water-swellable filler is formed in the adhesive according to the present invention and expands by water to exhibit dense sealability, thereby achieving more complete prevention of water leakage.
또 본 발명의 접착제(W)는 피착체에 자기 접착력을 부여하기 위하여 접착부여제가 조성되며, 접착부여제로는 비닐트리메톡시 실란, 비닐트리에톡시 실란, 감마- 글리시드옥시프로필트리에톡시실란, 감마- 아미노프로필트리에톡시실란으로부터 선택되는 하나 이상의 성분을 배합하는 것으로 이루어진다.In the adhesive (W) of the present invention, a tackifier is added in order to impart a self-adhesive force to an adherend. Examples of the tackifier include vinyltrimethoxysilane, vinyltriethoxysilane, gamma-glycidoxypropyltriethoxysilane , Gamma-aminopropyltriethoxysilane, and the like.
상기 본 발명에 따른 접착제에는 경화 속도를 촉진하기 위하여 경화촉매를 첨가하며, 경화촉매로 트리에틸렌 디아민, 디부틸틴 디라우레이트, 부틸틴디아세테이트, 디부틸틴 디아세테이트 트리에틸아민으로부터 선택되는 하나 이상의 성분을 배합하는 것으로 이루어진다.In the adhesive according to the present invention, a curing catalyst is added in order to accelerate a curing rate, and at least one catalyst selected from triethylenediamine, dibutyltin dilaurate, butyltin diacetate, dibutyltin diacetate triethylamine, ≪ / RTI >
그리고 상기 본 발명에 따른 파형강관(FT)의 제조방법에서 제 1단계의 제1 및 제2 락심 절곡부는 용융아연도금 파형강판(F)의 양 단부를 절곡하는 절곡수단(1)에 의해 절곡되며 또, 제1 및 제2 락심 절곡부는 락심(lock seam)부 형성수단(2)에 의해 맞물리게 중첩되어 결합되면서 압착에 의해 락심(lock seam)부가 형성되는 것으로 이루어진다.In the method of manufacturing the corrugated steel pipe (FT) according to the present invention, the first and second axial bending portions in the first step are bent by the
상기 본 발명에 따른 제 2단계에서 수밀성 접착제(W)가 도포되는 제1 및 제2 락심 절곡부(A, B)의 표면(A1, B1)은 용융아연도금 파형강판(F)을 기준(진행방향)으로 좌,우측 단부의 상면과 하면으로 상반되게 위치하는 부분이며, 접착제(W)가 상면과 하면으로 상반되는 부분에 도포된 제1 및 제2 락심 절곡부(A, B)의 표면(A1, B1)은 나선상으로 회전하면서 락심(lock seam)부 형성과정에서 서로 맞물리면서 맞닿게 결합되어 접착되므로 접착제가 락심(lock seam)부의 전반에 걸쳐 균일하게 스며들어 보다 넓은 접착면적에 의해 접착되어 완벽한 수밀성을 나타내는 효과 내지 장점이 있으며 또한 접착제(W)의 수 팽창성으로 인하여 보다 치밀하게 밀봉되는 효과를 나타낸다.The surfaces A1 and B1 of the first and second axial bending portions A and B to which the water-tight adhesive W is applied in the second step according to the present invention are formed on the basis of the molten zinc plated corrugated steel sheet F The upper and lower surfaces of the first and second axial bending portions A and B coated on the portion of the adhesive W opposite to the upper and lower surfaces A1 and B1 are rotated in a helical shape while being engaged with each other while being engaged with each other in the process of forming a lock seam part so that the adhesive uniformly seeps over the entirety of the lock seam part, And exhibits an effect of exhibiting watertightness and an advantageous effect of being more tightly sealed due to the water swelling property of the adhesive W.
또 본 발명에 따른 용융아연도금 파형강관(FT)는 본 발명이 속하는 기술분야에 잘 알려진 코팅기술을 이용하여 제조된 용융아연도금 파형강관(FT)의 내 외부에 통상적인 코팅용 우레탄수지를 코팅한 용융아연도금 파형강관이 제조될 수 있다.In addition, the hot dip galvanized steel pipe (FT) according to the present invention is coated with a conventional coating urethane resin on the inside and the outside of a hot-dip galvanized steel pipe (FT) manufactured by a coating technique well known in the technical field of the present invention A hot-dip galvanized corrugated steel pipe can be produced.
본 발명에 따른 파형강관용 수밀성 접착제를 이용한 수밀성 개선 파형강관의 제조방법은 용융아연도금 파형강판(F)을 기준으로 상면과 하면의 상반되게 위치하는 제1 및 제2 락심 절곡부의 표면에 접착제를 도포하는 특징적 구성에 의해 접착제가 락심(lock seam)부의 전반에 걸쳐 균일하게 스며들어 보다 넓은 접착면적에 의해 접착되어 완벽한 수밀성의 효과를 나타낸다.The method of manufacturing a watertight refractory corrugated steel pipe using a watertight adhesive for a corrugated steel pipe according to the present invention is characterized in that an adhesive is applied to the surfaces of the first and second fracture bent portions which are located opposite to each other on the upper and lower surfaces of the hot- Due to the characteristic configuration to be applied, the adhesive uniformly seeps over the entire area of the lock seam and is adhered with a wider adhesive area, thereby exhibiting a perfect water tightness effect.
또한 본 발명의 수팽창성 접착제에 의해 접착부분이 팽윤하여 보다 치밀하게 밀봉되는 효과를 나타낸다.Further, the water-swellable adhesive of the present invention exhibits an effect of swelling the bonded portion and sealing it more densely.
도 1는 본 발명의 수밀성 접착제를 이용한 수밀성 개선 파형강관 제조공정을 대략적으로 나타낸 도면
도 2는 본 발명의 파형강관 제조공정 중 수밀성 접착제를 도포하는 위치를 확대하여 나타낸 도면
도 3은 본 발명의 접착제 도포방식에 의해 락심(lock seam)부의 접착상태를 나타낸 도면BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view schematically showing a process for manufacturing a watertight improvement corrugated steel pipe using the water-
2 is an enlarged view of a position where the water-tight adhesive is applied in the corrugated steel pipe manufacturing process of the present invention
3 is a view showing an adhesion state of a lock seam part by an adhesive application method of the present invention
이하에서는 실시예 및 시험예에 의해 본 발명을 더욱 구체적으로 설명하지만, 아래 기재에 의해 본 발명이 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to examples and test examples, but the present invention is not limited by the following description.
도 1는 본 발명의 수밀성 접착제(W)를 이용한 수밀성 개선 파형강관 제조공정을 대략적으로 나타낸 도면이며, 도 2는 본 발명의 파형강관 제조공정 중 수밀성 접착제(W)를 도포하는 위치를 확대하여 나타낸 도면으로써 도 1 및 도 2를 참조하여 본 발명에 따른 수밀성 개선 파형강관 제조공정을 개략적으로 설명하면,1 is a view schematically showing a manufacturing process of a water-tightness improving corrugated steel pipe using the water-tight adhesive (W) of the present invention, and Fig. 2 is an enlarged view of a position where a water- Referring to FIG. 1 and FIG. 2, a process for manufacturing a watertight improved corrugated steel pipe according to the present invention will be schematically described.
도 1에 도시된 바와 같이, 파형성형기를 통과하여 파형으로 성형한 용융아연도금 파형강판(F)를 연속으로 공급하면서 락심부 절곡수단(1)에 의해 파형강판(F)의 진향방향을 기준으로 좌, 우측 양단을 절곡하여 제1 및 제2 락심절곡부(A, B)를 형성하고, 연속하여 진행하면서 수밀성 접착제 공급관(C)로부터 공급되는 수밀성 접착제(W)를 파형강판(F)의 좌우측 단부에 형성된 제1 및 제2 락심절곡부(A, B)의 표면(A1, B1)에 도포하고, 이어서 락심(lock seam)부 형성수단(2)으로 제1 및 제2 락심절곡부(A, B)의 표면(A1, B1)이 서로 맞닿으면서 맞물리게 결합되고 압착되어 락심(lock seam)부가 형성되면서 나선상으로 감아 관형태를 형성하여 수밀성 접착제에 의해 락심(lock seam)부의 수밀성이 개선된 용융아연도금 파형강관(FT)이 연속적으로 제조된다. As shown in Fig. 1, while the molten zinc plated corrugated steel sheet F formed into a corrugation through the corrugating machine is continuously fed, the corrugated
상기 제조공정에 의해 제작된 본 발명에 따른 용융아연도금 파형강관(FT)는 본 발명이 속하는 기술분야에 알려진 코팅기술로 파형강관 내, 외부를 우레탄 수지로 코팅한 파형강관이 제조될 수 있다.The hot-dip galvanized steel pipe (FT) according to the present invention manufactured by the above-described manufacturing process can be manufactured by a coating technique known in the technical field of the present invention and a corrugated steel pipe coated with a urethane resin in a corrugated steel pipe.
도 2에 의해 상기 본 발명에 따른 제조공정에서 수밀성 접착제 공급관(C)로부터 공급되는 수밀성 접착제(W)를 파형강판(F)의 좌우측 단부에 형성된 제1 및 제2 락심 절곡부(A, B)의 표면(A1, B1)에 도포하여 락심(lock seam)부가 형성되는 과정을 설명하면,2, the water-tight adhesive W supplied from the water-tight adhesive supply pipe C in the manufacturing process according to the present invention is inserted into the first and second fastening portions A and B formed at the right and left ends of the corrugated steel plate F, A process of forming a lock seam on the surfaces A1,
상기 제1 및 제2 락심 절곡부(A, B)의 표면(A1, B1)은 용융아연도금 파형강판(F)을 기준(진행방향)으로 우측단부 상부면(A1)과 좌측단부 하부면(B1)으로 상반되게 위치하는 부분이며, 파형강판(F)이 나선상으로 감기면서 양 단부의 표면(A1, B1)이 서로 마주보게 되고, 제1 및 제2 락심 절곡부(A, B)는 서로 맞물리게 결합되면서 락심(lock seam)부가 형성되므로 이러한 락심(lock seam)부 형성과정에서 상반되게 위치하는 부분인 표면(A1, B1)에 접착제(W)를 도포하여 접착부분도 서로 마주 보면서 접착된다.The surfaces A1 and B1 of the first and second sectional bifurcations A and B are formed by joining the molten zinc plated corrugated steel sheet F to the right upper end surface A1 and the left end lower surface B1 and the corrugated steel plate F is wound spirally so that the surfaces A1 and B1 of the both end portions face each other and the first and second axial bend portions A and B are opposed to each other A lock seam part is formed while being interlocked with each other, so that the adhesive W is applied to the surfaces A1 and B1 which are opposite to each other in the process of forming the lock seam part, and the adhesive parts are also adhered while facing each other.
그리고 도 3에 나타낸 바와 같이 상기한 본 발명에 따른 제1 및 제2 락심 절곡부(A, B)의 접착방식에 의해 접착되어 형성된 락심(lock seam)부는 보다 넓은 접착표면(p)으로 접착되어 보다 강한 접착효과를 나타내는 효과가 있으며, 또 접착제의 수 팽창성으로 인하여 보다 긴밀하게 밀봉되는 효과가 있다.As shown in FIG. 3, the lock seam formed by bonding the first and second fast bending portions A and B according to the present invention is adhered to the wider bonding surface p There is an effect of exhibiting a stronger adhesive effect and an effect of sealing more tightly due to the water expandability of the adhesive.
(실시예 1 내지 3)(Examples 1 to 3)
아래 [표 1]에 나타낸 조성 및 비율에 따라 재료를 배합하고 균일하게 혼합한 다음 서서히 탈포하여 본 발명에 따른 수밀성 접착제를 제조하였다.The materials were compounded according to the composition and ratio shown in Table 1 below, uniformly mixed, and then gradually defoamed to prepare the water-tight adhesive according to the present invention.
(시험예 1 내지 3)(Test Examples 1 to 3)
본 발명에 따른 파형강관의 수밀성 시험을 위하여 상기 <실시예 1 내지 3>에서 제조한 본 발명에 따른 수밀성 접착제 각각을 이용하여 상기에 [도 1]에서 설명드린 바와 같은 제조공정에 의해 직경 600mm 두께 2.0mm의 파형강관을 3개를 제작하였다.For the water tightness test of the corrugated steel pipe according to the present invention, each of the waterproofing adhesives according to the present invention prepared in Examples 1 to 3 was used to produce a 600 mm diameter Three corrugated steel tubes of 2.0 mm were produced.
상기 제작한 파형강관을 3개에 대하여 수밀성 시험을 위하여 파형강관 양단을 밀봉한 상태에서 공기를 제거하면서 강관내부로 물을 주입하여 포화상태로 유지하면서 1시간 정치 및 90KPa 수압조건에서 누수여부를 관찰하고 그 결과를 아래 [표 2]로 나타내었다(수밀특성값; 누수없음;◎, 소량누수있음○, 누수가발생×로 표시하였음)For the water tightness test for the three corrugated steel pipes, water was injected into the steel pipe while air was being removed while both ends of the corrugated steel pipe were sealed, and it was observed for 1 hour and at 90 kPa , And the results are shown in Table 2 below (watertightness characteristic value: no leakage;
수밀특성
상기 [표 2]에 나타낸 바와 같이 본발명에 따른 수밀성 접착제를 이용하여 제조된 파형강관은 어떠한 누수현상도 발견할 수 없으므로 우수한 수밀성을 갖는 파형강관이 제조되는 것을 확인할 수 있다.As shown in Table 2, the corrugated steel pipe manufactured using the water-tight adhesive according to the present invention can not find any leakage phenomenon, and thus it can be confirmed that the corrugated steel pipe having excellent watertightness is manufactured.
1; 락심부 절곡수단, 2; 락심(lock seam)부 형성수단, 3; 회전 안내로울러,
A, B: 제 1, 제2 락심 절곡부, A1, B1: 제 1, 제2 락심 절곡부 표면,
C: 수밀성 접착제 공급관, p; 락심부의 접착부분, F; 아연도금 파형강판,
FT; 아연도금 파형강관, S; 아연도금 파형강관 제조장치One; Rock deep bending means, 2; A lock seam part forming means, 3; A rotation guide roller,
A, B: first and second axial bending portions, A1, B1: first and second axial bending portion surfaces,
C: watertight adhesive pipe, p; An adhesive portion of the lock core portion, F; Galvanized corrugated steel sheet,
FT; Galvanized corrugated steel pipe, S; Zinc-plated corrugated steel pipe manufacturing equipment
Claims (7)
b). 상기 제1 및 제2 락심 절곡부(A, B)의 표면(A1, B1)으로 접착제 공급관(C)으로부터 공급되는 실릴-말단 폴리우레탄 및 실릴-말단 폴리에테르를 주재로 하는 수밀성 접착제(W)를 도포하는 제 2단계 및
c). 상기 제1 및 제2 락심 절곡부(A, B)가 맞물리게 결합되도록 중첩시켜 락심(lock seam)부를 형성하고 연속하여 나선상으로 감으면서 관형태로 제작하는 제 3단계를 포함하고,
실릴-말단 폴리우레탄 및 실릴-말단 폴리에테르를 주 성분으로 하는 수밀성 접착제(W)는 실릴-말단 폴리우레탄(Silyl-terminated polyurethanes; SPUR) 100중량부에 대하여 실릴-말단 폴리에테르(Silyl-terminated polyurethanes; STPE) 20 ~ 30중량부, 가소제 10 ~ 50중량부, 충진제 20 ~ 55중량부, 수팽창성 충진제 10 ~ 20중량부, 접착부여제 1 ~ 15중량부, 경화촉매 0.2 ~ 5중량부로 조성된 수 경화성 및 수 팽창성 접착제인 것을 특징으로 하는 수밀성 개선 용융아연도금 파형강관의 제조방법.a). (A and B) for forming lock seams at the left and right ends of the hot-dip galvanized corrugated steel sheet F while continuing the hot-dip galvanized corrugated steel sheet F formed in the corrugated shape, A first step of forming a first electrode,
b). (W) based on silyl-terminated polyurethane and silyl-terminated polyether supplied from the adhesive supply pipe (C) to the surfaces (A1, B1) of the first and second sectional bending portions (A, B) A second step of applying
c). And a third step of overlapping the first and second axial bending portions A and B so as to be engaged with each other to form a lock seam portion and successively spirally winding the same,
A water-tight adhesive (W) comprising a silyl-terminated polyurethane and a silyl-terminated polyether as a main component is obtained by reacting silyl-terminated polyurethanes (hereinafter referred to as " silyl-terminated polyurethanes ") with respect to 100 parts by weight of silyl-terminated polyurethanes 20 to 30 parts by weight of a plasticizer, 10 to 50 parts by weight of a plasticizer, 20 to 55 parts by weight of a filler, 10 to 20 parts by weight of a water-swellable filler, 1 to 15 parts by weight of a tackifier and 0.2 to 5 parts by weight of a curing catalyst Water-hardenable and water-swellable adhesive.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102021576B1 (en) | 2019-06-28 | 2019-09-16 | 신한스틸파이프 주식회사 | Enhanced water-dense inner smooth double-wave steel pipe |
| KR20210014841A (en) | 2019-07-31 | 2021-02-10 | 주식회사 태영피앤엑스 | Manufacturing method of internal smooth steel pipe with iron wire inserted projections |
| KR20210014842A (en) | 2019-07-31 | 2021-02-10 | 주식회사 태영피앤엑스 | Manufacturing method internal smooth steel pipe with projections |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102021576B1 (en) | 2019-06-28 | 2019-09-16 | 신한스틸파이프 주식회사 | Enhanced water-dense inner smooth double-wave steel pipe |
| KR20210014841A (en) | 2019-07-31 | 2021-02-10 | 주식회사 태영피앤엑스 | Manufacturing method of internal smooth steel pipe with iron wire inserted projections |
| KR20210014842A (en) | 2019-07-31 | 2021-02-10 | 주식회사 태영피앤엑스 | Manufacturing method internal smooth steel pipe with projections |
| KR20210093212A (en) | 2019-07-31 | 2021-07-27 | 주식회사 태영피앤엑스 | Manufacturing method of internal smooth steel pipe with iron wire inserted projections |
| KR20210098936A (en) | 2019-07-31 | 2021-08-11 | 주식회사 태영피앤엑스 | Manufacturing method internal smooth steel pipe with projections |
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