How to ensure the smooth acceptance of curtain wall project?

1. design stage: the manager of the design department shall be responsible for the work quality of the designers engaged in this project in his department and control the quality of the whole design process to ensure the correctness of the design drawings. At the same time, it is also necessary to ensure the correctness of the processing drawing to guide production. The scheme of engineering design and process preparation shall be subject to the final review, and it can only be operated after the review is passed. The process is judged according to the reviewed records and drawings countersigned, and supervised and evaluated by the quality inspection department. 2. Material supply stage: The planning department and the purchasing department should be responsible for the order and quality of materials purchased by their own departments for this project, and purchase materials in strict accordance with the material procurement control procedures in the quality manual to ensure the quality and supply cycle of raw materials. The quality inspection department shall inspect the purchased materials according to the incoming inspection control procedures in the quality manual, and unqualified materials shall not enter the factory. 3. Production and processing stage: The production department is responsible for the processing and assembly of the parts of this project, fully controlling the processing quality, and organizing the processing and assembly in strict accordance with the quality manual "Processing Work Instruction". A, processing personnel must be in accordance with the processing drawings and process cards for production and processing. B, first inspection, self-inspection and mutual inspection must be carried out. Check to confirm the accuracy of measuring tools. C, processed products should be identified. D, check the equipment and tooling in good condition before processing, don't rough operation in the process of processing. 4. Processing inspection stage: Quality inspection department is responsible for product inspection during processing. Total control of processing quality. First, carry out the first special inspection and appraisal. B, track and inspect each working procedure to ensure that nonconforming products do not flow into the next working procedure. C. Conduct inspection and sampling inspection, and mark the sampling inspection. The sampling inspection rate of each batch is 10%, and the number of each batch is not less than 3 pieces. D, found unqualified products, according to the quality manual "nonconforming product control" program execution. 5. Installation stage: The project department of this project is responsible for the installation quality of this project and fully controls the installation quality. The project department shall set up full-time quality inspectors, who shall be responsible for daily construction quality inspection and recording, and communicate with the supervision unit for inspection. The company also has an engineering inspector who is responsible for supervising and inspecting the quality, safety, management, civilized construction and various quality records of the installation site. A. Before entering the site for installation: carefully study the construction drawing and technical disclosure, and check whether the construction equipment and instruments are in good condition; B, main girder installation stage: the positioning and setting-out of main girder is a key and substantial step in curtain wall installation, and its error directly affects the quality of each process in the later period. Pay-off must be accurate. At the same time, the setting-out of the main girder needs to consider the size treatment of various positions and angles such as the specifications of the glass, the sealing direction and the installation direction of the main girder. Girder installation has a large amount of work, inconvenient construction and high precision requirements, which plays an important role in the whole curtain wall installation process. If the girder is installed, the whole project progress will be easier to control, so special attention should be paid to both technology and management at this stage. Process flow: check the specifications and models of the main girder → install supports, gaskets, bolts and core sleeves → check the quantity and put it in place → adjust the three-dimensional direction → install embedded bolts. Basic operating instructions: ① according to the line released from the datum layer, first locate and install the corner beam of the curtain wall; (2) positioning and installing a pull rod in the middle part of the main girder where the corner main girder has been positioned and installed; (3) The corner girders are installed in other floors according to positioning, and then the middle girders are installed by pulling wires and straightedge positioning; (4) After the positioning and installation of the main girder on each floor is completed, it must be fixed with the built-in parts immediately after the acceptance, so as to avoid installing a layer of main girder to make it go down. The main girder is generally carried out from bottom to top, with one end with the core sleeve facing upward, and the first main girder is fixed at the upper end according to the hanging piece, and then fixed at the lower end after alignment; The lower end of the second main beam is aligned with the core sleeve of the upper end of the first main beam, and the expansion joint pad is reserved, then the upper end of the beam is aligned and installed upwards. C, beam installation stage: after the installation and protection of the main beam is completed, the beam installation preparation will be carried out. Beam measurement is to adjust the installation error of the main beam, and leveling with a level can check and adjust the error. First, level the installed beams on the first floor, which is still used as the reference floor, and locate and install the other floors based on the ruler. Quality control should be strict, and each layer should be rechecked. D. Plate hanging stage: When installing plates, the specifications, models and appearance quality of glass (aluminum plate) plates should be checked first. After passing the inspection, lift the glass to the installation position and install the glue joint. After hanging the board, it must be adjusted. The standard of adjustment is horizontal and vertical. Glue joint should be horizontal and vertical. E, gluing stage: sealant can be injected immediately after the plate is installed and adjusted. This process is a key process to prevent rainwater leakage and air leakage, and it is also a necessary condition to ensure external beauty. Therefore, the bonding quality of silicone sealants should be strictly controlled. (1) Plug the foam stick: After the glass is installed, plug the foam stick firmly, tightly and smoothly; (2) Clean the glue injection part and the glass edge with xylene, dry it with a clean dry cloth after cleaning, and do not depilate; (3) Paste corrugated tape should be straight; (4) Glue injection: Glue injection should be uniform and full, and injection should be made from bottom to top at the vertical glue line; (5) Glue scraping: When scraping glue, it can only be scraped in one direction, and it is required to scrape straight and level. Tear off the crumpled paper immediately after scraping. (6) Pay attention to maintenance after glue injection. Don't be contaminated with dust and scratches until the glue is completely hardened. F. Cleaning stage: After the curtain wall project is installed, a cleaning scheme shall be made, and the model and specification of cleaning agent, the number, date and time of cleaning machines and tools shall be specified; The cleaning agent shall meet the compound requirements and shall not cause pollution and corrosion; When cleaning, we should avoid damaging the surface of curtain wall and interfering with other sub-projects and strengthen the protection of finished products. Cleaning work includes external cleaning and internal cleaning. (1) After the glass is glued, it should be cleaned externally, dipped in water and xylene with a clean cloth or towel, or wiped dry with a clean dry cloth; (2) Internal cleaning: firstly, tear off the protective tape of the main beam and cross beam, and then clean it with toluene. If it can't be cleaned, you can scrape it with a blade. Five, quality common fault prevention measures 1. Embedded parts Some engineering subjects have no embedded parts, so expansion bolts and chemical bolts have to be used to remedy them: some have embedded parts, but the specifications of embedded parts, the welding and anchoring length of anchor bars, etc. Does not meet the specification requirements. 2. The mechanical calculation model of columns and beams does not conform to the engineering practice; The calculation or application of column and beam section characteristic parameters is incorrect, and even some section shapes do not meet the stress requirements; The column is designed as a compression member (it should be designed as a tension member according to regulations); Check the strength of the rod, but don't check its stiffness; Not according to the most unfavorable frame and maximum span for checking calculation. Connection between curtain wall and main body: the welding strength between support and anchor plate is not enough; Only one bolt was used at the joint: the corner code was subjected to excessive bending moment, but it was not reinforced. 3. In the fixed part of the plate, the lower part of the hidden frame curtain wall plate has no support; The spacing between the platens is too large or the platens themselves are not strong enough. 4, fire, lightning protection part of the fire cotton thickness is insufficient or fire partition is too thin; The fire protection node is not tight; Improper handling of lightning protection nodes at the telescopic position of columns. Protection of finished products with intransitive verbs (1) Protection measures for finished products at the construction site 1. Materials temporarily stored in the construction site shall be stored and maintained in accordance with the Product Storage Control Procedure. 2. For the frame materials that have been installed on the wall, if there is concrete construction in civil engineering, a protective film must be attached to prevent cement from splashing on the surface of the frame and the surface of the profile from being corroded. 3, glass glue joint glue should be affixed with protective tape, prevent dirty glass surface when glue. 4. During the project construction, each subcontractor shall be responsible for the protection of finished products and semi-finished products within its contracted scope, and ensure that other subcontractors' materials, equipment, finished products and semi-finished products are not lost. If there is any loss, it shall be borne by the responsible party. 5. After the curtain wall project passes the single acceptance, the responsibility of protecting the curtain wall finished product shall be handed over to the next subcontractor. If there is any loss, the responsible party shall bear the responsibility, and the company shall not bear the responsibility. (two) product protection control measures in the process of acceptance and handover. Before the curtain wall project is accepted, the curtain wall will be cleaned as a whole, with excellent impression. 2, after the acceptance standard, handed over to the general contractor is responsible for the finished product protection, our company sent people to patrol day and night, found that the finished product protection is not in place, timely notify the general contractor. 3, quality evaluation, our company is responsible for the secondary cleaning, to ensure that the overall acceptance of the project to achieve the goal. Quality assurance measures for materials and equipment in the second quarter 1. Quality assurance measures for materials Materials are one of the key factors that affect the quality of the project, and the progress of the project is closely related to whether the materials can arrive in time and comprehensively. In order to ensure the quality and progress of the project and ensure the smooth completion of the quality and quantity objectives of this project, our company describes the material procurement assurance measures as follows: 1, material procurement quality assurance measures (1) closely focus on the company's procurement principle of "high quality, low price and excellent service" and carefully select material suppliers. The selection targets are enterprises with large scale, high industry status and good reputation, which can provide strong guarantee for the materials needed for project development, ensure the quality of materials and meet the needs of the project. (2) For the main materials used in this project, the quality inspection department shall conduct detailed inspection on the materials and properties, and inspect the surface quality and size of the materials according to the inspection standards. Only after they are qualified can they enter the factory and put into production. We will also issue product certificates and quality guarantees from various material manufacturers. In addition to the above certificates, key materials (such as sealants and profiles) will be accompanied by service life. (3) Before materials enter the site, materials samples shall be submitted according to the requirements of the tenderee and the architect, and the samples shall be sealed after being approved by all parties. Only materials consistent with the determined samples can enter the construction site. (4) Hardware and other accessories: Standard hardware, chemical bolts, fillers and other materials used in the project must provide corresponding warranty and relevant test reports, and undergo strict tests. (5) Require material manufacturers to provide quality certification materials in time, including material list, certificate of approval, quality inspection report, delivery list, etc. , in order to timely material acceptance inspection. (6) Non-conforming products shall be isolated and scrapped as required. (7) If necessary, we will send experts to the material supplier to supervise the quality and progress of material production and processing for materials that have a significant impact on the project quality and progress. (8) On-site material personnel should be familiar with material acceptance and storage standards, and have an overall plan for on-site material requirements. (9) Strictly carry out civilized construction in the process of material stacking, handling and installation, and pay attention to the protection of materials and finished products. 2. Control the processing quality of all profiles, hanging plates, finished products and semi-finished products. Every working procedure is inspected in strict accordance with the sampling plan, so that the whole production process can be managed in a closed loop. The specific methods are as follows: (1) Carry out production and processing in strict accordance with the design and construction drawings and process documents issued by the Engineering Department; (2) All kinds of measuring tools used in the processing site must be within the controlled range; (3) Silicone structural adhesive and sealant must have quality assurance such as performance index and safe service life; (4) Straighten and adjust the stress parts of the main structure before blanking; (5) The allowable deviation of component machining accuracy shall be implemented according to the high precision grade of industry standard; (6) The processed components shall be sampled according to 5% of their quantity, and each component shall be no less than 5 pieces; (7) Strictly implement the three inspection system in the production process; (8) Finished products and semi-finished products are accompanied by quality inspection certificates when they leave the factory; (9) Production workers must hold relevant certificates. 3. Quality assurance of packaging and transportation Since all materials are decorative materials, our company uses protective tapes to protect the surfaces of all finished and semi-finished products, so as to avoid damaging the surfaces of materials during transportation and installation, and then packages them with fiber tapes and transports them to the site. After the glass is transported to the site, it will be specially protected and closely coordinated with the surrounding construction personnel. All materials are transported to the site by our motorcade. All materials are transported to the site and placed in a ventilated and rain-proof place. Second, equipment quality assurance measures (1) Install equipment 1, and implement the "three guarantees" service for equipment products during the quality assurance period; 2. If quality problems are found in the use of equipment and products, the manufacturer shall immediately assist in solving the problems and respond within 2 hours after receiving the user's notice; 3. Ensure that the supplied equipment is designed and manufactured in full accordance with relevant national standards and industry standards, with perfect quality inspection means, and has passed the ISO900 1 quality system certification. 4. Make sure to be responsible for the quality of its purchased spare parts and equipment, and carry out strict incoming inspection in the procurement process, and ensure to provide its product quality certificate, instruction manual, inspection report and other related materials. 5. Ensure that the goods are brand-new, unused, made of first-class technology and the best materials, fully meet the quality, specifications and performance requirements stipulated in the contract, and ensure that the provided equipment has been correctly installed, operated and maintained on site, and has satisfactory and reliable performance within its service life. 6. Ensure that the quality, specifications, performance and quantity of the equipment are inspected in detail and comprehensively before delivery, and can issue certificates and inspection reports to prove that the equipment meets the contract requirements. 7. During the warranty period, if the goods are found to have other potential defects, and the raw materials, spare parts and purchased parts we use do not meet the standard requirements or bidding commitments, the owner has the right to return the goods or claim compensation from us. (2) Construction equipment 1. Conduct on-the-job training for the users and maintenance personnel of mechanical equipment, be familiar with the performance of mechanical equipment, master the skills of using and maintaining mechanical equipment, and prevent the occurrence of major machine damage accidents. 2, all kinds of mechanical surfaces must be kept clean at any time, often remove mud, sludge, etc. To keep the machine clean. 3, the use of electric welding machine should be zero, the primary power connector has a protection device, the secondary line should be grounded, and just one brake must be installed with random switch. And install leakage protector. It is an important factor to ensure the safe implementation of the construction project to set up full-time machinery management and maintenance personnel in the construction project, and to check the mechanical protection device and safety indication device in combination with the regular inspection of mechanical equipment to ensure the safe and reliable operation of the machinery.