Some standard content:
ICS 47. 020. 70
Registration No.: 11134-2003
Ship Industry Standard of the People's Republic of China
CB/T 336-2002
Replaces CR/T336-1999
Marine light-weight three fulcrum bar graduator
Marine light-weight three fulcrum bar graduator2002—11—20 Issued by the Commission of Science, Technology and Industry for National Defense. Implementation on February 1, 2003. This standard is a revision of CB/T336-1999 (Light three-rod indexing instrument for ships). CB/T336-2002. CB/T336-1999 is a direct adjustment from ZBL65002-1990 in June 1999, based on the notice of the Quality and Technical Supervision Bureau of China (About the abolition of the professional standard and the adjustment standard that should be converted after the adjustment and the original notice of the General Company on the adjustment of the professional standard and relevant national standards to this standard). This standard is different from CB/1336-1999: The following modifications are made: The ambient temperature "-25～45℃" is changed to "-25~55℃" 2. The worm and The meshing pressure between the worm gears is 10~1N: the addition and assembly process requirements have been cancelled; 3. The reference to the coating and coating requirements has been added: 1. The relevant clauses have been added to the test method. The content of "use instructions" has been added: 6. The requirements for the outer packaging of the indexing instrument during transportation have been added. This standard replaces (B/13361999) from the date of implementation. This standard is under the jurisdiction of China Shipbuilding Industry Comprehensive Technology and Economic Research Institute. The drafting of this standard is the responsibility of China Shipbuilding Industry General Navigation Instrument Factory. The drafting of this standard is: Hui Jinbin, Xu Xiangdong. This standard was first issued in December 1964, revised for the first time as a professional standard in April 1990, and adjusted to an industry standard in June 1999. Scope: Marine light three-rod indexing instrument CB/T 336-2002
The standard specifies the requirements, test methods, inspection rules, markings, operating instructions and packaging, transportation and storage of light three-rod indexing instruments for ships.
This standard applies to the design, manufacture and acceptance of light three-rod indexing instruments (hereinafter referred to as indexing instruments) used in conjunction with navigation sextants to determine ship positions.
2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. At the time of publication of this standard, the versions shown are valid: All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T191—2000 Packaging and transportation standard GB/T2423.1—20011 Ton "Product environmental testing Part 2: Test method Test A: Low temperature GB/T 2423.2—2001
GB/T 2423. 4—1993
GB/T 2423. 10—1995
G3/T 9969.1—1998
Environmental testing for electrical products Part 2: Test method Test B: Basic environmental testing procedures for high temperature electrical products Test B: Alternating damp heat test method Environmental testing for electrical products Part 2: Test method Test Fc and guidelines: Report (sinusoidal)
T General provisions for product instructions
C3/T763—1997 Technical conditions for coating of electrical appliances, instruments and weapons C3/T 3764—1996
3 Requirements
3.1 Environment
Metal coating chemical coating thickness series and quality requirements Unless otherwise specified, the indexing instrument should be able to work normally under the following environmental conditions: a) The ambient temperature is -25℃~5℃;
b) When the ambient temperature is (40±3)℃, the relative humidity is 91%95%; c) The alarm frequency is 5Hz~50Hz, and the amplitude is 0.1mm~1.6mm3.2 Accuracy
3.2.1 The angle deviation between the left and right finger scissors and the middle finger hip of the indexing instrument should not exceed 20. [3.2.2 After the indexing instrument worm is meshed with the worm wheel of the dial, when the left and right indexes rotate around the center of the dial: the rotation should be flexible, even, and without jamming.
3.2.3 The clearance between the indexing instrument worm and the worm wheel should not be greater than 0.05", and the vernier accuracy is 1°. 3.2.4 The deviation between the position set by the center needle of the indexing instrument and any angle of the right (or left) index arm and the middle index arm should not be greater than 0.4mm. 3.2.5 The opening of the indexing instrument finger arm should pass through the center line and zero line of the dial. 3.2.6 The opening of the indexing instrument and the right arm pass through the center of the dial, and the error should not be less than 0.1°. 3.2.7 After the indexing instrument is subjected to the impact test, its parts should not be deformed or damaged, and the fasteners should not be loose. 3.3 Appearance
3.3.1 There should be no burrs, rust, or obvious damage on the surface of the indexing instrument parts. There should be no visible sand and cracks on the working surface: 3.3.2 The screws, thumbscrews and other fasteners of the indexing instrument should not be loose, tilted, scratched or rusted. 3.3.3 The scale lines of the indexing instrument should be clear, uniform and distinct in length. 3.4 Plating
CB/T336—2002
The surface plating and chemical coating of the metal parts of the indexing instrument should comply with the requirements of CB/T3761 and other use conditions. The coating surface should not be blistered or exposed
3.5 Coating
The coating of the indexer should comply with the requirements of CB/I765 Grade II of the instrument application conditions: the paint layer should not have paint leakage, flow marks, blistering and smearing.
4 Test method
4.1 Appearance inspection
The appearance requirements of the indexer should be checked by oral measurement, and the results should meet the requirements of 3.3. 4.2 Coating quality inspection
The surface coating and chemical coating of the indexer parts shall be inspected according to the requirements of CB/T3764, and the results shall meet the requirements of 3.4. 4.3 Coating quality inspection
The coating of the indexer shall be inspected according to the requirements of CB/T7t5, and the results shall meet the requirements of 3.5. 4.4 High temperature test
The test shall be carried out according to the moisture change method of the dispersed test sample in GB/T2423.2. Place the indexer in a normal temperature test chamber, heat it up to (55-2), the heating rate is not less than 1 ℃/min, and keep it for 2 hours. After the test, check the precision and appearance. The shrinkage results should meet the requirements of 3.2.1-3.2.3 and 3.3-3.5. 4.5 Low temperature test
Test according to the temperature shock Ab method of non-heating test sample in GB/T2423.1. Place the indexer in a normal temperature test chamber, lower it to (-253)℃, the moisture sinking rate is not more than 1/min, keep it for 2 hours, and check the accuracy and appearance after the test. The results meet the requirements of 3.2.1~~3.2.3 and 3.3~-3.5. 4.6 Wet heat test
Test according to the relevant provisions in GB.T2423.4. The results should meet the requirements of 3.2.1~~3.2.3 and 3.3~3.5. 4.7 Vibration test
Test according to the relevant provisions of (iB/T2423.10: Place the indexer in a special packaging box and fasten it on the vibration table. Scan from low to high and then from high to low at a scanning rate of · frequency range per minute according to the frequency and amplitude specified in Table 1. Each frequency drum scan is 3in.
Table 1 Frequency and amplitude
25--50
After the test, the indexer should meet the requirements of 3.2. 4.8 Accuracy inspection
4.8, 1 indexer It is recommended to install it on a special dial, accurately fix the working edge of the middle finger arm on the dial, rotate the left and right finger arm tangent screws to make the working edge of the left and right finger arms coincide with the scale line of 1 every 10” on the dial, and use the angle deviation of the left and right finger hips and the ten finger arms every 10° according to the reading on the differential drum. The result should meet the requirements of 3.2.1. 4, B.2 When the worm is disengaged by feeling, turn the left and right finger arms: the rolling rod is meshing with the dial worm wheel, and the micro-motion chisel is turned. The result should meet the requirements of 3.2.2.
CB/T 336--2002
4.8.3 Install the scale on the special calibration dial, set the middle finger, make the left and right index arms move on the selected scale line on the dial, observe and record the readings on the left and right index arms’ differential drums with a 1x magnifying glass, rotate the differential drum in any direction, then reverse it, and make the left and right index arms move on the originally selected scale line again. The difference between the reading on the differential drum and the reading on the index is the gear ratio. The gear ratio should meet the requirements of 3.2.3. 4.B.4. First adjust the left and right finger arms of the indexer to 30", then place them on the unfolded paper 1, use a sharpened pencil to draw a line along the working edge of each finger, and use the center needle to poke a mark on the paper, then remove the indexer, and use a special ruler to accurately extend the two lines to make them intersect, and use a reading microscope with an accuracy of 0.01U to measure the distance between the intersection of the left finger arm and the middle finger arm and the intersection of the right finger arm and the middle finger arm, respectively. Use the same method to check the center deviation at 60°, 90° and 120". The results should meet the requirements of 3.2.1. 4.8.5 Adjust the middle finger position of the indexer on the special equipment 1! The results should meet the requirements of 3.2.5. 4.8.6 Use the middle finger arm of the indexer as the reference on the special equipment L to align the left and right finger arms! 1 are placed on the dial at 90", adjust the index on the worm gear frame and the scale on the differential, the index must point to the 90" scale on the dial, and the scale on the differential drum is zero. Place the adjusted left and right index arms 1.1 at 90" respectively, draw a straight line with a special pin ruler, and then check whether the line segment drawn by the left and right index arms is consistent with the straight line drawn by the special steel ruler, and the error factor meets the requirements of 3.2.6. 5 Inspection rules
5.1 Inspection classification
Inspection of indexing instrument is divided into type inspection and drawing! 5.2 Type inspection
5.2.1 The type inspection shall be carried out for the indexing instrument in any of the following cases: when a new product is signed (finalized);
when the product is put into production, such as when there are major changes in structure, materials, and processes that may affect product performance; b
when the product is mass-produced every five years;Www.bzxZ.net
when the product is resumed after a long period of suspension. d)
The items and requirements of the type inspection of the indexing instrument are shown in Table 2. Table 2 Inspection items Inspection items Phytophthora protozoa
Condensate
Required chapter number
.2.1, 3.2.2, 3.2.3
and 3.3-3.5
3.2.1, 3.2.2, 3.2.3
3.3-3.5
3, 2.1. 3.2.2, 1.2.3
but 3.3-3.5
3.2.1, 3.2.2
3.2.1-2.2. 6
5.2.3 The indexing instrument submitted for type inspection shall have at least 3 test methods listed above
Type inspection
Out! Physical inspection
CB/T 336—2002
5.2.4 When all inspection items of all samples meet the requirements, the indexing instrument shall be deemed to have passed the type inspection. During the inspection, if any item is found not to meet the requirements, corrective measures shall be taken, and then the item and related items shall be tested again. If there are still items that do not meet the requirements during the re-inspection, the indexing instrument shall be deemed to have failed the type inspection. 5.3 Factory inspection
5.3.1 The factory inspection items and requirements of the indexing instrument are shown in Table 2. 5.3.2 The factory inspection of the indexing instrument shall be carried out one by one. 5.3.3 If all the factory inspection items of the indexing instrument meet the requirements, it will be judged as a qualified product. If any of the following items do not meet the requirements, the indexing instrument will be judged as an unqualified product.
6 Marking and Instructions for Use
6.1 Marking
6.1.1 The indexing instrument shall have the manufacturer's name and the product number with the year code. 6.1.2 The special packaging box of the indexing instrument shall have a nameplate with the words "durable, latent flame, clean, and firm". The marking components of the nameplate include the following: a
Manufacturer name:
Product name and model:
Product number:
Trademark:
Product standard number:
Manufacture date.
When the indexing instrument is transported, the outer packaging box should be marked with the delivery and receipt mark, and the content includes: 6. t. 3
Product name, model, number:
Manufacturer number:
Box body dimensions (length, width, height): d)
Factory date:
)Manufacturer name and address:
g)Consignee name and address.
According to GB/T191, the outer packaging box should be marked with the following words and symbols: "upward", "handle with care", "keep away from moisture", etc. 6.2Instruction manual
The contents of the indexing instrument user manual should comply with the relevant provisions of GB/T9969.1. 7 Packaging, transportation and storage
7.1 Packaging
7.1.1 The special packing box for the indexer should be solid and necessary moisture-proof measures should be taken. 7.1.2 The exposed painted metal surface of the indexer should be greased with neutral grease before packaging. 7.1.3 The special packing box for the indexer contains the following documents: a) Packing box:
Product certificate;
c) Product instruction manual:
d) Resume book;
e) Spare parts list:
7.2 Transportation and storage
CB/T 336-2002
7.2.1 The indexer shall not be exposed to water during transportation and storage. The product should be placed in a ventilated, dry and non-corrosive warehouse.
When the indexing instrument is placed in the warehouse for a long time, it must be unpacked every year for appearance inspection and drying. After inspection, the unpainted metal surface should be painted with neutral color.2 The special packaging box of the indexing instrument should have a nameplate with the words "durable, non-flammable, clean and strong". The markings on the nameplate include the following: a) Manufacturer's name: b) Product name and model: c) Product number: d) Trademark: d) Product standard number: d) Date of manufacture. When the indexing instrument is transported, the delivery and receipt mark should be marked on the outer packaging box, and its contents include: 3) Product name, model and number: d) Delivery number: d) Box body dimensions (length, width and height): d) Date of manufacture: d) Manufacturer's name and address: g) Name and address of the receiving unit.
According to GB/T191, the outer packaging box should be marked with words and symbols such as "upward", "handle with care", and "keep away from moisture". 6.2 Instructions for Use
The contents of the instruction manual for the indexing instrument should comply with the relevant provisions of GB/T9969.1. 7 Packaging, transportation and storage
7.1 Packaging
7.1.1 The special packaging box for the indexing instrument should be solid and necessary moisture-proof measures should be taken. 7.1.2 The exposed painted metal surface of the indexing instrument should be coated with neutral grease before packaging. 7.1.3 The following documents are included in the special packaging box of the indexing instrument: a) Packing box:
Product certificate;
c) Product instruction manual:
d) Resume book;
e) Spare parts list:
7.2 Transportation and storage
CB/T 336-2002
7.2.1 The indexing instrument shall not be exposed to water during transportation and storage. The product shall be placed in a ventilated, dry and non-corrosive warehouse. When the indexing instrument is stored in the warehouse for a long time, it shall be unpacked every year for appearance inspection and drying. After inspection, the unpainted metal surface shall be painted with neutral paint.2 The special packaging box of the indexing instrument should have a nameplate with the words "durable, non-flammable, clean and strong". The markings on the nameplate include the following: a) Manufacturer's name: b) Product name and model: c) Product number: d) Trademark: d) Product standard number: d) Date of manufacture. When the indexing instrument is transported, the delivery and receipt mark should be marked on the outer packaging box, and its contents include: 3) Product name, model and number: d) Delivery number: d) Box body dimensions (length, width and height): d) Date of manufacture: d) Manufacturer's name and address: g) Name and address of the receiving unit.
According to GB/T191, the outer packaging box should be marked with words and symbols such as "upward", "handle with care", and "keep away from moisture". 6.2 Instructions for Use
The contents of the instruction manual for the indexing instrument should comply with the relevant provisions of GB/T9969.1. 7 Packaging, transportation and storage
7.1 Packaging
7.1.1 The special packaging box for the indexing instrument should be solid and necessary moisture-proof measures should be taken. 7.1.2 The exposed painted metal surface of the indexing instrument should be coated with neutral grease before packaging. 7.1.3 The following documents are included in the special packaging box of the indexing instrument: a) Packing box:
Product certificate;
c) Product instruction manual:
d) Resume book;
e) Spare parts list:
7.2 Transportation and storage
CB/T 336-2002
7.2.1 The indexing instrument shall not be exposed to water during transportation and storage. The product shall be placed in a ventilated, dry and non-corrosive warehouse. When the indexing instrument is stored in the warehouse for a long time, it shall be unpacked every year for appearance inspection and drying. After inspection, the unpainted metal surface shall be painted with neutral paint.
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