GB/T 25708-2010 PDF EnglishUS$130.00 · In stock · Download in 9 seconds
GB/T 25708-2010: Ball mill and rod mill Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 25708-2010: Ball mill and rod mill---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT25708-2010GB ICS 73.120 D 94 Ball mill and rod mill Issued on. DECEMBER 23, 2010 Implemented on. JULY 01, 2011 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China; Standardization Administration of the People’s Republic of China. Table of ContentsForeword... 3 1 Scope... 4 2 Normative references... 4 3 Types and basic parameters... 5 4 Technical requirements... 13 5 Test method... 19 6 Inspection rules... 19 7 Marking and operation instructions... 20 8 Packaging, transportation and storage... 21ForewordSince implementation date of this Standard, previous Standard JB/T 1406-2002 Ball-mill and rod-mill is abolished. This Standard was proposed by China Machinery Industry Federation. This Standard shall be under the jurisdiction of National Technical Committee (SAC/TC 88) on Mining Machinery of Standardization Administration of China. The responsible drafting organization of this Standard. Luoyang Mining Machinery Engineering Design & Research Institute Co., Ltd. The participating drafting organizations of this Standard. Shenyang Heavy Machinery Group Co., Ltd, CITIC Heavy Industries Co., Ltd, Jinan Heavy Machinery Joint-stock Co., Ltd, Hengyang Heavy Machinery Co., Ltd, Sinosteel Co., Ltd., and Shendong Shankuang Machinery Co., Ltd. The chief drafting staffs of this Standard. Zhang Xiao, Li Chunran, Wang Jisheng, Yu Xiao, Gao Junkun, Zhou Xiaoping, Zhao Heng, Yang Xianli, Liu Wanhua, Wang Jianhua, Fan Yongqing, and Wang Chunhong. Ball mill and Rod mill1 ScopeThis Standard specifies ball-mill and rod-mill’s types and basic parameters, technical requirements, test methods, inspection rules, marking and operation instructions, packaging, transportation and storage. This Standard applies to ball-mills and rod-mills that grind ores, rocks and other suitable materials of various hardness in wet and dry processes (hereinafter referred to as mills).2 Normative referencesThe articles contained in the following documents have become part of this Standard when they are quoted herein. For the dated documents so quoted, all the modifications (excluding corrections) or revisions made thereafter shall not be applicable to this Standard. For the undated documents so quoted, the latest editions shall be applicable to this Standard. GB/T 191 Packaging - Pictorial marking for handling of goods (GB/T 191-2008, ISO 780.1997, MOD) GB/T 700 Carbon structural steels (GB/T 700-2006, ISO 630.1995, NEQ) GB/T 1174 Cast bearing metals (GB/T 1174-1992, neq ISO 4382-1.1991) GB/T 1348 Spheroidal graphite iron castings (GB/T 1348-2009, ISO 1083.2004, MOD) GB/T 1804-2000 General tolerances－Tolerances for linear and angular dimensions without individual tolerance indications (eqv ISO 2768-1.1989) GB/T 3768 Acoustics - Determination of sound power levels of noise sources using sound pressure - Survey method using an enveloping measurement surface over a reflecting plane (GB/T 3768-1996, eqv ISO 3746.1995) GB/T 5226.1 Electrical safety of machinery - Electrical equipment of machines - Part 1.General requirements (GB 5226.1-2008, IEC 60204-1.2005, IDT) GB/T 5680 Austenitic manganese steel castings GB/T 7233.1-2009 Steel castings - Ultrasonic examination - Part 1.Steel castings for general purposes (ISO 4992-1.2006, MOD) GB/T 9444-2007 Magnetic particle testing for steel castings (ISO 4986.1992, IDT) GB/T 9969 General principles for preparation of instructions for use of industrial products3 Types and basic parameters3.1 Types 3.1.1 Mills are divided into ball-mill and rod-mill; ball-mill are divided into grate type and overflow type according to different media; grate ball-mills are divided into dry type and wet type. 3.2 Model 3.2.1 Representation method of ball-mill model Marking example. 3.3 Basic parameters of mills Basic parameters of mills shall respectively comply with the provisions in table 1, table 2, table 3 and table 4.4 Technical requirements4.1 Basic requirements 4.1.1 Mill shall comply with provisions of this Standard, and shall be manufactured according to the drawings and technical documents that have been approved based on established procedure. 4.1.5 Welding parts shall comply with relevant provisions of JB/T5000.3. 4.1.6 Steel castings shall comply with relevant provisions of JB/T5000.6. 4.2 Machine performance requirements 4.2.1 Main technical parameters of mills shall comply with provisions of this Standard and meet system process requirements. 4.2.5 Sound pressure level of noises during mill idling running shall not exceed 90dB (A). 4.2.6 Complete set of mill shall include host machine, main motor, spray lubrication device, main bearing lubrication station, low-voltage centralized electrical control equipment, etc. Synchronous transmission shall also include clutch; asynchronous transmission includes reducer and coupling; gearless transmission shall also include brake. Mills of which the barrel diameter is grater than or equal to Ø2700mm series shall be provided with necessary auxiliary equipment (e.g. low-speed transmission device, jack-up device, etc.). 4.3 Safety requirements 4.3.1 Rotating part of transmission gear shall be fitted with a protective cover; user shall set up the protective railings around rotating parts. 4.3.2 Requirements of protective grounding, insulation resistance, pressure test, etc. shall comply with relevant provisions of GB5226.1. 4.4 Requirements for main components and parts 4.4.1 Main bearing bush and slider bearing bush material shall not be lower than the specifications on mechanical properties in table 5. 4.4.2 Steel plate material of barrel shall not be lower than the specifications on Q235A mechanical properties in GB/T 700; tensile strength of welding rod used shall not be lower than 420MPa. 4.4.8 Pinion or shaft gear Mechanical properties of pinion and shaft gear material shall not be lower than the standard specified in table 5; tooth surface hardness shall be at least 30HB harder than large gear surface; machining precision shall comply with the provisions of GB/T10095.1 and GB/T10095.2. 4.4.9 Large gear Mechanical properties of large gear material shall not be lower than the standard specified in table 5; machining precision shall comply with the provisions of GB/T10095.1 and GB/T10095.2; flange thickness shall be uniform. 4.4.12 Reducer performance shall comply with provisions of JB/T8853. 4.5 Assembly technical requirements 4.5.1 Main bearing shall uniformly contact with periphery of bearing base plate. 4.5.7 Backlash in circular tooth for large gears and pinions shall be calculated in accordance with formula (1) to formula (3). 4.6 Electrical control Mill shall be equipped with complete set of low-voltage electrical control devices matched, so as to complete the following control functions.5 Test method5.1 Appearance inspection is conducted visually; there shall be no significant defect. 5.2 During complete machine idling, noises shall be determined by the method specified in GB/T3768. 5.3 Mill shall be conducted for idling test and meets the following requirements.6 Inspection rules6.1 Inspection classification Inspection is divided into exit-factory inspection and type inspection. 6.2 Exit-factory inspection 6.3 Type inspection 6.3.1 Type inspection shall be carried out in one of following cases. 6.3.2 Type inspection shall include all requirements of this Standard.7 Marking and operation instructions7.1 Product label shall be fixed onto an apparent and appropriate position of each set of mill. The label shall comply with the provisions of GB/T13306 and indicate following contents. 7.2 Operation instructions of mill shall comply with the provisions of GB/T 9969. 7.3 Packing mark of mill shall comply with the provisions of GB/T 191.8 Packaging, transportation and storage8.1 Packages of mill shall comply with the provisions of JB/T5000.13. 8.2 Mill packing is divided into enclosed packing, nude packing, bundled packing, etc. Components and parts shall be fixed firmly in cases during packing. 8.6 Following technical documents shall be attached. 8.7 Mill shall have safety measures of preventing deformation and damage during transportation. 8.8 Packages of mills shall comply with land or sea transportation requirements. 8.9 Mill storage shall meet the following requirements. 8.10 Mills shall be maintained once a year during storage. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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