High Strength Bolt Connection of Torsion-shear Electric Spanner

　　1 范圍

　　Scope 1

　　本工藝規(guī)范適用于鋼構造裝置用扭剪型電動扳手高強螺栓施工工藝。

　　This technical specification is applicable to the construction technology of high strength bolts of torsional shear type electric wrench for steel structure devices.

　　2 施工準備

　　2. Construction preparation

　　2.1 資料及主要機具：

　　2.1 Data and main machines:

　　2.1.1 螺栓、螺母、墊圈均應附有質量證明書，并應契合設計請求和國度規(guī)范的規(guī)則。

　　2.1.1 Bolts, nuts and gaskets shall be accompanied by a certificate of quality and shall conform to the design requirements and the rules of the national code.

　　2.1.2 高強螺栓入庫應按規(guī)格分類寄存，并防雨、防潮。遇有螺栓、螺母不配套，螺紋損傷時，不得運用。螺栓、螺母、墊圈有銹蝕，應抽樣檢查緊固軸力，滿足請求前方可運用。螺栓等不得被泥土、油污粘染，堅持干凈、枯燥狀態(tài)。必需按批號，同批內配套運用，不得混放、混用。

　　2.1.2 High-strength bolts should be stored in storage according to specifications, and be rain-proof and moisture-proof. When bolts and nuts are not matched and thread damage occurs, they shall not be used. Bolts, nuts and washers are corroded. The fastening axial force should be sampled and checked before the request is met. Bolts, etc. shall not be contaminated by soil or oil, and shall be kept in a clean and dry state. It must be used in the same batch according to the batch number. No mixing or mixing is allowed.

　　2.1.3 主要機具：電動扭矩扳手及控制儀、手動扭矩扳手、手工扳手、鋼絲刷、工具袋等。

　　2.1.3 Main machines and tools: electric torque wrench and controller, manual torque wrench, manual wrench, wire brush, tool bag, etc.

　　2.2 作業(yè)條件：

　　2.2 Operating conditions:

　　2.2.1 摩擦面處置：摩擦面采用噴砂、砂輪打磨等辦法停止處置，摩擦系數(shù)應契合設計請求（普通請求Q235鋼為0.45以上，16錳鋼為0.55以上）。摩擦面木允許有殘留氧化鐵皮，處置后的摩擦面可生成赤銹面后裝置螺栓（普通露天存10d左右），用噴砂處置的摩擦面不用生銹即可裝置螺栓。采用砂輪打磨時，打磨范圍不小于螺栓直徑的4倍，打磨方向與受力方向垂直，打磨后的摩擦面應無明顯不平。摩擦面避免被油或油漆等污染，如污染應徹底清算潔凈。

　　2.2.1 Friction surface disposal: Friction surface is stopped by sandblasting and grinding wheel. Friction coefficient should meet the design requirements (common request Q235 steel is above 0.45, 16 manganese steel is above 0.55). Residual iron oxide scale is allowed on the friction surface wood. After disposal, the screw bolts of the rear device with red rust surface can be formed (stored in open air for about 10 days). The screw bolts can be installed without rusting on the friction surface disposed by sand blasting. When grinding with grinding wheel, the grinding range is not less than 4 times the diameter of bolt, the direction of grinding is perpendicular to the direction of force, and the friction surface after grinding should not be uneven. Friction surfaces should be cleaned thoroughly to avoid contamination by paint or paint.

　　2.2.2 檢查螺栓孔的孔徑尺寸，孔邊有毛刺必需肅清掉。

　　2.2.2 Check the hole size of bolt holes. Burrs on the hole edge must be removed.

　　2.2.3 同一批號、規(guī)格的螺栓、螺母、墊圈，應配套裝箱待用。

　　2.2.3 Bolts, nuts and gaskets of the same batch number and specifications shall be packed in boxes for use.

　　2.2.4 電動扳手及手動扳手應經(jīng)過標定。

　　2.2.4 Electric wrenches and manual wrenches shall be calibrated.

　　4 質量規(guī)范

　　4 Quality Specification

　　3.1 保證項目：

　　3.1 Guarantee Project:

　　3.1.1 高強螺栓的型式、規(guī)格和技術條件必需契合設計請求及有關規(guī)范的規(guī)則，檢查質量證明書及出廠檢驗報告。復驗螺栓預拉力契合規(guī)則前方準運用。

　　3.1.1 The type, specifications and technical conditions of high strength bolts must conform to the design requirements and the rules of relevant specifications, check the quality certificate and the factory inspection report. The pre-tension fit rule of the re-inspection bolt shall be applied in front of it.

　　3.1.2 銜接面的摩擦系數(shù)（抗?jié)撘葡禂?shù)）必需契合設計請求。外表嚴禁有氧化鐵皮、毛刺、飛濺物、焊疤、涂料和污垢等，檢查摩擦系數(shù)試件實驗報告及現(xiàn)場試件復驗報告。

　　The friction coefficient (anti-latent displacement coefficient) of the 3.1.2 interface must meet the design requirements. It is strictly forbidden to have oxide scale, burrs, spatters, weld scars, coatings and dirt on the surface. The test report of friction coefficient and the re-examination report of field test pieces are checked.

　　3.1.3 初擰扭矩扳手應定期標定。高強螺栓初擰、終擰必需契合施工標準及設計請求，檢查標定記載及施工記載。

　　3.1.3 Initial twisting torque wrench should be calibrated regularly. Initial and final twisting of high strength bolts must conform to the construction standards and design requirements, check the calibration records and construction records.

　　4.2 根本項目：

　　4.2 Fundamental Projects:

　　4.2.1 外觀檢查：螺栓穿入方向應分歧，絲扣外露長度不少于2扣。

　　4.2.1 Appearance inspection: Bolt penetration direction should be different, the length of thread exposure should not be less than 2 buckles.

　　4.2.2 扭剪型高強螺栓尾部卡頭終擰后應全部擰掉。

　　4.2.2 The end clamp of Torsion-shear high strength bolt should be screwed off completely after final screw.

　　4.2.3 摩擦面間隙契合施工標準的請求。

　　4.2.3 Friction clearance conforms to the requirements of construction standards.

　　5 廢品維護

　　5 Waste Maintenance

　　5.1 構造防腐區(qū)段（如酸洗車間）應在銜接板縫、螺頭、螺母、墊圈周邊涂抹防腐膩子（如過氯乙烯膩子）封鎖，面層防腐處置與該區(qū)鋼構造相同。

　　5.1 Structural anticorrosive section (such as pickling workshop) should be sealed with anticorrosive putty (such as perchloroethylene putty) around jointing plate seam, screw head, nut and washer. The surface anticorrosive treatment is the same as that of steel structure in this area.

　　5.2 構造防銹區(qū)段，應在銜接板縫、螺頭、螺母、墊圈周邊涂快干紅丹漆封鎖，面層防銹處置與該區(qū)鋼構造相同。

　　5.2 In the structural rust-proof section, fast-drying red paint should be applied around the joints of joints, bolts, nuts and washers, and the surface rust-proof treatment is the same as that of the steel structure in this area.

　　6 應留意的質量問題

　　6. Quality issues to be noted

　　6.1 裝配面不契合請求：外表有浮銹、油污，螺栓孔有毛刺、焊瘤等，均應清算潔凈。

　　6.1 The assembly surface does not meet the requirements: the appearance of floating rust, oil stain, burrs in bolt holes, welding nodules, etc., should be clean.

　　6.2 銜接板拼裝不嚴：銜接板變形，間隙大，應校正處置后再運用。

　　6.2 Insufficient assembling of the connection plate: the connection plate is deformed and has large clearance. It should be corrected and disposed of before it is used.

　　6.3 螺栓絲扣損傷：螺栓應自在穿入螺孔，不準許強行打入。

　　6.3 Bolt screw damage: Bolt should be free to penetrate the hole, not forcibly penetrate.

　　6.4 扭矩不準：應定期標定扳手的扭矩值，其偏向不大于5%，嚴厲按緊固次第操作。

　　6.4 Torque inaccuracy: The wrench's torque value should be calibrated regularly, and its deviation is less than 5%. The wrench should be operated strictly according to the tightening order.

　　7 質量記載

　　7 Quality Records

　　本工藝規(guī)范應具備以下質量記載：

　　This process specification shall have the following quality records:

　　7.1 高強螺栓、螺母、墊圈組成的連續(xù)副的出廠質量證明、出廠一檢驗報告。

　　7.1 Quality Certificate of Continuous Pairs of High Strength Bolts, Nuts and Washers and One Inspection Report of Exit.

　　7.2 高強螺栓預拉力復驗報告。

　　7.2 Re-inspection report on pre-tension of high strength bolts.

　　7.3 摩擦面抗滑移系數(shù)（摩擦系數(shù)）實驗及復驗報告。

　　7.3 Anti-slip coefficient (friction coefficient) experiment and re-examination report of friction surface.

　　7.4 扭矩扳手標定記載。

　　7.4 Torque wrench calibration record.

　　7.5 設計變卦、洽商記載。

　　7.5 Records of design change and negotiation.

　　7.5 施工檢查記載。

　　7.5 Records of construction inspection.

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