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YS/T 851-2012 (YST851-2012)

YS/T 851-2012_English: PDF (YST 851-2012, YST851-2012)
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YS/T 851-2012English190 Add to Cart 0--9 seconds. Auto-delivery Technical specification for on-line rotating degassing system used for aluminium and aluminium alloy melts Valid YS/T 851-2012

BASIC DATA
Standard ID YS/T 851-2012 (YS/T851-2012)
Description (Translated English) Technical specification for on-line rotating degassing system used for aluminium and aluminium alloy melts
Sector / Industry Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard H93
Classification of International Standard 77.180
Word Count Estimation 10,186
Quoted Standard GB/T 3274; GB 3766; GB 11984; GB 30078; GB 30079.1; JB/T 5943; YS/T 601
Drafting Organization Matt Fujian new Aluminium Technology Co., Ltd.
Administrative Organization National non-ferrous metals Standardization Technical Committee
Regulation (derived from) Ministry of Industry and Information Technology Bulletin 2012 No. 70; industry standard filing Notice 2013 No. 3 (total 159)
Issuing agency(ies) Ministry of Industry and Information Technology of the People's Republic of China
Summary This standard specifies the classification, naming rules, technical requirements, inspection methods, inspection rules and marking, packaging, transportation, storage, random documentation, order (or contract) of aluminum melt in-line degassing, filtration equipment. This standard applies to aluminum and aluminum box box on-line rotary jet degassing, filtration device (hereinafter referred to as degassing, filtration device).

Standards related to: YS/T 851-2012

YS/T 851-2012
YS
NONFERROUS INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 77.180
H 93
Technical Specification for On-Line Rotating Degassing
System Used for Aluminum and Aluminum Alloys Melts
铝熔体在线连续除气装置
ISSUED ON: DECEMBER 28, 2012
IMPLEMENTED ON: JUNE 1, 2013
Issued by: Ministry of Industry and Information Technology of the People’s
Republic of China
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Classification of Degassing and Filtering Devices ... 5
4 Naming Rules for Devices ... 5
5 Technical Requirements ... 7
6 Inspection Methods ... 10
7 Inspection Rules ... 12
8 Marking, Packaging, Transportation and Storage ... 13
9 Random Files ... 14
10 Contents of Order Form (or Contract) ... 14
Technical Specification for On-Line Rotating Degassing
System Used for Aluminum and Aluminum Alloys Melts
1 Scope
This Standard specifies the classification, naming rules, technical requirements, inspection
methods, inspection rules and markings, packaging, transportation, storage, random documents,
order forms (or contracts) contents of aluminum melt online degassing and filtering devices.
This Standard applies to aluminum and aluminum alloy box-type online rotary spray degassing
and filtering devices (hereinafter referred to as degassing and filtering devices).
2 Normative References
The following documents are essential to the application of this Document. For the dated
documents, only the versions with the dates indicated are applicable to this Document; for the
undated documents, only the latest version (including all the amendments) is applicable to this
Document.
GB/T 3274 Hot-rolled plates/sheets and strips of carbon structural steels and high strength
low alloy structural steels
GB 3766 Hydraulic Fluid Power - General Rules Relating to Systems
GB 11984 Safety Regulation for Chlorine
GB 30078 Safety Specification for Wrought Aluminum and Aluminum Alloy Ingots
Production
GB 30079.1 Safety Specification for Aluminum and Aluminum Alloys Plates, Sheets and
Foils and Foils Production - Part 1: Cast-rolling
JB/T 5943 Construction machinery - General specifications for welding parts
YS/T 601 Technical Specification for Process of On-line Degassing and Filtering for
Aluminum and Aluminum Alloy Melts
3 Classification of Degassing and Filtering Devices
3.1 Classification of degassing devices
3.1.1 Classification according to the number of rotors
It is divided into single rotor, double rotor and multi-rotor degassing devices.
3.1.2 Classification according to box type
It is divided into fixed box type, pouring box type, rotating box type and vacuum box type
degassing devices.
3.2 Classification of filtering devices
3.2.1 Classification according to filtering levels
It is divided into single-stage, double-stage and multi-stage filtering devices.
3.2.2 Classification according to used filter media
It is divided into glass fiber cloth, foam ceramic plate, alumina ball and ceramic tube filtering
device.
3.2.3 Classification according to box type
It is divided into fixed box type, tilting box type and tube type filtering devices.
4 Naming Rules for Devices
4.1 Degassing device
4.1.1 The naming of the degassing device should include the equipment code, number of rotors,
maximum processing capacity of aluminum melt and box type.
4.1.2 The equipment code is represented by the English "APR" (APR is the English
abbreviation of Aluminum purification by rotating degas bank).
4.1.3 The number of rotors is represented by lowercase Arabic letters. Single rotors are marked
with "1", double rotors are marked with "2", and so on.
4.1.4 The maximum processing capacity of aluminum melt is expressed by numbers, in "t/h".
4.1.5 The box type is indicated by uppercase English letters. The fixed box type device is
marked with "F", the pouring box type device is marked with "P", the rotating box device is
marked with "R", and the vacuum box device is marked with "V".
5 Technical Requirements
5.1 Design requirements for degassing and filtering devices
5.1.1 General requirements
5.1.1.1 The design of degassing and filtering devices shall comply with the relevant provisions
of GB 11984, GB 30078, GB 30079.l, and YS/T 601.
5.1.1.2 The degassing and filtering device generally consists of the box and upper cover, upper
cover lifting mechanism, pouring mechanism, heater, automatic control system, rotor and
driving mechanism, gas control system, etc. The design of the degassing device should meet
the requirements of 5.1.2~5.1.8, the design of the filtering device shall meet the requirements
of 5.1.2~5.1.6.
5.1.2 Box and upper cover
The box body and upper cover are generally composed of lining, insulation layer and iron shell.
5.1.2.1 Lining
5.1.2.1.1 The lining is made of integrally sintered refractory materials, which shall be non-stick
to aluminum, resistant to high temperatures, washing, and thermal vibration, good thermal
insulation and not prone to chemical reactions with molten aluminum.
5.1.2.1.2 The shape and structure of the lining make it easy to manually clean the slag
accumulation.
5.1.2.1.3 The normal service life of the lining shall be ≥24 months.
5.1.2.2 Insulation layer
5.1.2.2.1 The insulation layer between the lining and the iron shell shall be filled tightly to
ensure that the lining is not loose.
5.1.2.2.2 The insulation layer between the lining and the iron shell has good thermal insulation
performance. The temperature rise of the iron shell during operation shall be < 45°C.
5.1.2.3 Iron shell
5.1.2.3.1 The steel used for the iron shell shall meet the requirements of GB/T 3274.
5.1.2.3.2 Iron shell welds shall meet the requirements of JB/T 5943.
5.1.2.3.3 The surface of the iron shell shall be conducted anti-rust treatment.
5.1.2.3.4 The overall metal frame of the iron shell is firmly welded and does not deform.
5.1.2.4 Sealing
The matching surface between the bottom of the upper cover and the box is inlaid with high-
temperature sealing strips, and the contact surfaces are flush and seamless to ensure that the hot
air in the box does not leak out.
5.1.2.5 Functional parts
5.1.2.5.1 The box shall be equipped with a drainage device.
5.1.2.5.2 The degassing box shall have good sealing performance and isolate gas from entering
and exiting.
5.1.2.5.3 When using chlorine gas, the upper cover shall be equipped with a safe discharge
device for treated gas.
5.1.3 Upper cover lifting mechanism
5.1.3.1 The upper cover lifting mechanism shall operate stably, safely and reliably.
5.1.3.2 The connection between the upper cover lifting mechanism and the upper cover shall
be safe and reliable.
5.1.4 Pouring mechanism
5.1.4.1 The pouring mechanism shall facilitate complete emptying of the metal in the box.
5.1.4.2 The pouring mechanism shall operate stably, be safe and reliable.
5.1.4.3 The pouring mechanism shall adopt a hydraulic system, and the hydraulic system shall
comply with the provisions of GB 3766.
5.1.5 Heater
5.1.5.1 The heater shall operate stably, be sturdy and durable.
5.1.5.2 Each component of the heater shall be easy to assemble and disassemble.
5.1.6 Automation control system
5.1.6.1 The automatic control system shall integrate the control electrical system, temperature
control system, etc., and the control accuracy shall comply with the provisions of YS/T 601.
5.1.6.2 The automated control system should include a human-machine display operation
interface, and the display, setting and monitoring content shall comply with the provisions in
Table 1.
5.3.1.3 The pouring mechanism of the degassing and filtering device has a stable pouring speed
and no jamming, and the hydraulic system has no leakage.
5.3.1.4 The heater and control temperature of the degassing and filtering devices are adjustable.
5.3.1.5 The rotor driving mechanism of the degassing device operates at a stable and adjustable
speed without swinging.
5.3.1.6 The gas control system of the degassing device has no leakage, and the gas flow is stable
and adjustable.
5.3.1.7 The automated system detection of degassing and filtering devices is normal.
5.3.2 Load test run
5.3.2.1 The loaded test run is carried out on the basis of the successful no-load test run.
5.3.2.2 The insulation layer between the box and upper cover lining of the degassing and
filtering device and the iron shell has good thermal insulation performance.
5.3.2.3 There is no aluminum leakage from the degassing and filtering device boxes.
5.3.2.4 The static temperature control accuracy and temperature rising capacity of the
aluminum melt of the degassing and filtering devices comply with the provisions of YS/T 601.
5.3.2.5 The rotor of the degassing device operates stably, with adjustable speed and no swing
or shedding.
5.3.2.6 In the degassing device, the bubbles in the aluminum melt are finely dispersed, and the
gas flow is stable and adjustable.
5.3.2.7 The degassing rate of the degassing device, the alkali metal removal rate, and the
filtration effect of the filtering device shall comply with the provisions of YS/T 601.
6 Inspection Methods
6.1 Design requirements for degassing and filtering devices
According to the requirements in the order form (or contract) signed by the supplier and the
purchaser, the basic parameters of the degassing and filtering devices, the design function
consisting of box and upper cover, the upper cover lifting mechanism, the pouring mechanism,
the heater, the automatic control system, the rotor and the drive mechanism, and gas control
system shall be reviewed.
6.2 Manufacturing requirements for degassing and filtering devices
After the manufacturing of the degassing and filtering devices is completed, the supplier shall
assemble the corresponding mechanisms and conduct trial operation before the degassing and
filtering devices leave the factory. During the manufacturing process of the degassing and
filtering devices, the parts of the degassing and filtering devices shall be inspected. After the
parts are manufactured, they shall be assembled at the supplier. After the assembly is completed,
a single machine trial operation shall be carried out.
6.3 Commissioning requirements for degassing and filtering devices
6.3.1 No-load test run
6.3.1.1 The supplier shall provide the preheating curve of the degassing and filtering device,
which shall be preheated after confirmation by the purchaser. The supplier shall be responsible
for the quality of preheating.
6.3.1.2 Use a thermometer to measure the temperature rise of the iron shell; and check the
sealing and heat insulation conditions of the degassing and filtering device boxes and upper
covers.
6.3.1.3 The mechanical and hydraulic systems of the degassing and filtering devices shall be
conducting test running for no less than 3 times, and the operation status shall be visually
inspected.
6.3.1.4 The temperature of the heater of the degassing and filtering device is read from the
human-machine interface and calibrated with a standard thermocouple.
6.3.1.5 Use a tachometer to measure the rotor speed of the degassing device, and visually
inspect the operating condition of the rotor drive mechanism.
6.3.1.6 Conduct a pressure test on the gas control system of the degassing device to check
whether there are leaks in each circuit and whether the gas flow is stable and adjustable.
6.3.1.7 Conduct individual and linkage testing, parameter setting, detection and alarm
inspection of each part of the automated system of degassing and filtering devices.
6.3.2 Load test run
6.3.2.1 Use a thermometer to detect the temperature rise of the iron shell of the degassing and
filtering device boxes and upper covers.
6.3.2.2 During the test run, visually check whether the degassing and filtering device boxes are
leaking aluminum.
6.3.2.3 Adjust the rotation speed of the rotor of the degassing device, and visually check
whether the rotor is running stably, the speed is adjustable, and there is no swing or shedding.
6.3.2.4 Adjust the gas flow and pressure in the degassing device, visually inspect the bubble
meet the design or production process requirements, the relevant components of the device shall
be modified, and the relevant matters shall be resolved through negotiation between the supplier
and the purchaser. When the degassing and filtering devices do not comply with the provisions
of YS/T 601, they shall be further adjusted until they meet the requirements.
8 Marking, Packaging, Transportation and Storage
8.1 Marking
8.1.1 The marking content of the equipment label shall include:
a) Name and address of the manufacturer;
b) Name and model of degassing and filtering devices;
c) Processing capacity;
d) Exit-factory date.
8.1.2 Marking of the packaging
There shall be obvious text or symbols on the outer wall of the packaging box, including:
a) Name and address of the manufacturer;
b) Model of the degassing and filtering devices;
c) Receiving organization and address;
d) Net weight, gross weight, box number;
e) Outer dimensions and words and symbols such as handling with care, rain protection,
upwards, lifting line position, etc.
8.2 Packaging
The packaging of degassing and filtering devices shall meet the requirements for land and water
transportation and loading.
8.3 Transportation
The transportation of degassing and filtering devices shall meet the requirements for land and
water transportation and loading.
8.4 Storage
After the degassing and filtering device is manufactured and installed at the user site, it shall
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