Some standard content:
National Standard of the People's Republic of China
Stainless steel pressure cooker
Stainless steel pressure cooker1 Subject content and scope of application
GB15066—94
This standard specifies the terminology and product classification of stainless steel pressure cookers , technical requirements, test methods, inspection rules, marking, packaging, transportation and storage.
This standard applies to pressure cookers with a nominal working pressure of 50100kPa and made of stainless steel plates. 2 Reference standards
GB191 Packaging, storage and transportation pictorial mark
GB1404 phenolic molding compound
GB2828
Batch-by-batch inspection and counting sampling procedures and sampling tables (applicable to consecutive batches Inspection) Periodic inspection counting sampling procedures and sampling tables (suitable for inspection of production process stability) GB2829
GB/T3190 Chemical composition of aluminum and aluminum alloy processing products GB3280
GB4808
GB4846 | | tt | | GB6388 | | tt | Transportation packaging receipt and delivery mark
Hygienic standards for stainless steel tableware containers
GB11333
3 terms
3.1 single double bottom
Hygiene for aluminum tableware containers Standard
A layer of metal plate laminated to the bottom of the pot.
3.2 Double bottom
Two layers of metal plates are laminated on the bottom of the pot.
3.3 Internal pressure resistance
The maximum internal pressure that the pressure cooker can withstand without normal deformation and maintaining sealing. 4 Product Classification
4.1 Varieties
According to the bottom structure of the pot, it is divided into: single compound bottom (D), double compound bottom (S), and no compound bottom. According to the closing form, it is divided into: screw-on type (A), drop-cover type (B), and gland type (C). 4.2 Specifications
are represented by “pot inner diameter × volume”.
The inner diameter of the pot body is in centimeters (cm) as an integer, and the even number series is used; the volume is in liters (L) as the unit National Technical Supervision Bureau approved on 1994-03-15 and implemented on 1994-12-01||tt ||4.3 Product mark
GB15066-94
4.3.1 Product mark is represented by product structure type, pot mouth inner diameter, pot body volume, nominal working pressure (or nominal working pressure range) and standard number .
4.3.2 Marking example
Screw-on single compound bottom pressure cooker with an inner diameter of 26cm, a pot volume of 10L, and a nominal working pressure of 100kPa: AD26-10-100GB15066
Inner diameter of the pot 24cm, pot body volume 7L, nominal working pressure 50 ~ 100kPa gland type double bottom pressure cooker: CS24-07-50X100GB15066
5 Technical requirements
5.1 Materials
5.1.1 The pot body and lid should be made of 1Cr18Ni9, 0Cr19Ni9, 1Cr18Ni9Ti stainless steel stipulated in GB3280 or other steel grades whose performance is not lower than that specified above.
5.1.2 The single-layer bottom metal shall be made of industrial pure aluminum sheet in GB3190 or other metal sheets with good thermal conductivity. The thickness of the composite aluminum plate shall not be less than 2.5mm.
5.1.3 The inner layer of the double-sole metal plate should be made of the same material as the single-sole, and the outer layer should be a protective and decorative metal plate. 5.1.4 The sealing ring should comply with the technical requirements in GB4846. 5.2 Working pressure
The working pressure is 0.9 to 1.1 times the nominal working pressure. 5.3 Safety pressure
The safety pressure is 1.3 to 2.4 times the nominal working pressure. 5.4 Sealing performance
The steam pressure in the pot is within the range from 20kPa to the nominal working pressure, and no dripping or air leakage is allowed. 5.5 Resistance to internal pressure
5.5.1 Resistance to internal pressure shall not be less than 3 times the maximum working pressure. When tested according to the method in 6.5, there shall be no leakage and no abnormalities. After the pressure is relieved, a sealing test shall be conducted and it shall still comply with the requirements. 5.4 requirements. 5.5.2 Gland pressure cookers shall not undergo normal deformation within the safe pressure range. 5.6 Safety of lid closing
The pot body and pot lid are not fastened properly, and the pressure inside the pot must not exceed 5kPa. 5.7 Safety of opening the lid
The product should have a device that cannot open the lid when the pressure in the pot is above 5kPa. 5.8 Anti-clogging safety
The pressure cooker should have an anti-clogging safety device to prevent the exhaust hole of the pressure limiting valve from being blocked. 5.9 Hygienic requirements
5.9.1 The parts of the pressure cooker that come into contact with food should comply with the regulations of GB9684 and GB11333. 5.9.2 Rubber parts in contact with gas and substances in the pot should comply with the regulations of GB4808. 5.10 Composite requirements
The composite bottom is firm and does not crack.
5.11 Handle connection firmness
The handle connection should be firm.
5.12 Other Requirements
5.12.1 Components should be intact.
5.12.2 Phenolic plastic parts should have good boiling resistance. After testing according to 6.12, there should be no cracks, bubbles, pores and obvious discoloration, and no obvious irritating smell.
5.13 Product surface quality
GB15066-94
Product surface quality and grading requirements should comply with the provisions of Table 1. Table 1
Table
Serial number
1
2
3
5
6
7
9
9
10
11
Project name
Premium product
Polished surface roughness||tt ||m
Sanding surface roughness
μm
Cleaning
Stretch marks
Pits
Scratches||tt| |Slim
Burrs
Composite bottom
Connection
Logo
No alkali stains, oil stains,
water stains||tt| |Not allowed
Not allowed
Not allowed
Not allowed
Not allowed
The surrounding area is smooth, round and neat
clean, No burrs, no pores,
slag inclusion
straight, close, no black spots,
no burrs
straight, clear
R, ≤0.2
R≤3.2
Noodles
-
Quality
Equal products
No alkali stains or oil stains
Quantity
refers to
within the range of 10mm from the mouth of the pot, it is allowed to have visible
test visible stretch marks that cannot be felt
1~3.mm pits on the pot body , the pot lid should not exceed two points
two points
two points
with a total length of 0.2~0.5mm in width,
the pot body, Each pot lid should not exceed the diameter of the pot mouth
1/2
Body: no larger than 4mm, pointed shape is not allowed
allowed
Lid: not allowed|| tt||No exposed parts are allowed
The periphery is smooth, round, and free of burrs. The pores and slag inclusions are not more than .5mm deep and 1mm deep.
Not stinging
Correct, clear
label
qualified product
R≤0.8
R≤6.3
5~10mm alkali The width of the pot body and
pot cover shall not exceed 0.3~0.5mm. The outer
surface of the pot shall not exceed 5 strips, and the inner surface shall not || tt||More than 10 pits
1~3mm pits, pot body and lid are different
More than six points, no more than 20mm
Three points
The cumulative length of scratches with a width of 0.5~0.8mm,
the pot body and the pot lid shall not exceed the diameter of the pot mouth
1/2
body: no more than 4mm in two places, pointed shape Not allowed
Allow
Cover: no larger than 4mm, pointed shape is not allowed
Allow
No obvious burrs are allowed around the edge
Round and straight, 1.5mm deep and 1mm
The pores and slag inclusions do not exceed four points
fitting, not irritating
Clear
6 test methods
6.1 General matterswww.bzxz.net
6.1.1 The test instruments and equipment are as follows:
a.
One 1.5-level 0~250kPa pressure gauge,
b.
One 1.5-level 0~400kPa pressure gauge ;
One 1.5-level 0~1MPa pressure gauge,
c.
GB15066-94
SB200 pressure test pump or similar pressure test pump set; d.
e.
f.
g.
h.
i.
j
k.
1.
m.
n.
One KL-20 tube dynamometer;
Liquefied petroleum gas stove or 2kW One set of electric furnaces; three sets of special joints with exhaust valves and pressure gauges, and several meters of rubber hoses; one set of thermostatic box or electric furnace (the door of the furnace should be larger than the sample); one set of water tank with a volume larger than that of the sample;
A vernier caliper with an accuracy of 0.02mm;
a set of roughness samples,
a set of alcohol lamps, beakers and brackets,
several code, bench tools and furnace tools; length 125mm A dedicated upper handle.
Note: Test instruments and equipment are not limited to models, as long as they can meet the purpose requirements. The ambient temperature of the test is generally carried out at normal temperature. 6.1.2
6.2 Working pressure test
a.
b.
c.
d.
The meter is installed at the safety valve hole of the pot cover; inject 70% water into the pot,
close the pot lid, place the pot on the stove to heat; when the pressure limiting valve operates normally, measure its pressure. 6.3 Safety pressure test
a.
b.
c.
d.
Install the 0~400kPa pressure gauge on the pot lid pressure limiting valve hole; proceed according to 6.2b and c;
Fusible piece type safety valve, the exhaust valve should be closed after 20 seconds of exhausting steam; when the safety valve just operates, measure its pressure. 6.4 Sealing performance test
a.
b.
Carry out according to 6.2a, b, c;
When the pressure gauge value reaches 20kPa to the nominal working pressure range , observe whether the pressure cooker is dripping or leaking. 6.5 Internal pressure resistance test
a.
A valve seat hole in the pot lid, and other safety devices cannot move. Connect the pressure test pump, pot lid valve hole, and water supply system; fill the pot with water and cover it tightly;
d.||tt ||Drain the air from the pot and use a pressure test pump to pressurize it to the pressure specified in 5.5, maintain the pressure for 30 seconds, and observe and measure its pressure and performance; e.
After the pressure is relieved, do a sealing performance test to observe whether there is any leakage gas phenomenon. 6.6 Lid closing safety test
Carry out according to 6.2a, b, and c, and keep the lid not in place; a.
Observe whether the pressure of the pressure cooker increases and whether it exceeds the specified range. b.
6.7 Lid opening safety test
a. Carry out according to 6.2a, 6.5b, c;
GB15066-94
b. Discharge the air in the pot and test Pressurize the pressure pump to the pressure specified in 5.7; C. For the openable type, observe whether the pressure is discharged quickly during the opening process, and it is safe and reliable; d. For the non-openable type, use a special handle to test, fix the lower handle, and use a dynamometer to Pull the end of the upper handle perpendicular to the center line of the upper handle in the horizontal direction with a force of 100N, and observe whether it moves and opens. 6.8 Anti-blocking safety test
Add 3/16 of the pot's capacity of millet and 1/16 of its glutinous rice into the pot, and then add water to 4/5 of the pot's depth; a.
b. Install the 0~25kPa pressure gauge at the safety valve hole of the pot cover. Close the exhaust valve and close the pot lid. c. Place the pot on the stove to heat. When the pot is continuously exhausted, put down the pressure limiting valve body and continue heating. Timing starts from the time when the pressure limiting valve is exhausted. Lift the pressure limiting valve once every 5 minutes for 5 seconds; d. Observe the value of the pressure gauge. The pressure shall not exceed 1.25 times the nominal working pressure within 10 minutes. 6.9 Hygiene requirements test
The determination of various harmful substances in products can be carried out using the methods specified in the corresponding national standards. 6.10 Required tests for composite bottom
a. Put the sample into a furnace at a temperature of 300 ± 25°C for 5 minutes; b. Take out the sample and immerse it in water at room temperature to cool; c. Observe whether there is any cracking on the composite bottom , repeated 20 times. 6.11 Handle connection firmness test
Place a code that is 3 times the weight of the pot's water capacity in the pot. Hold the handle of the pot flat and raise it not less than 0.8m, keep it for 10 minutes, then take out the code, fill the pot with water, and observe Is there any water leakage or abnormality? 6.12 Boiling resistance test of phenolic plastic parts
Carry out the test according to GB1404 and observe the results. 6.13 Product surface quality
is measured by visual inspection and a vernier caliper with an accuracy of 0.02mm. 6.14 Surface roughness
Use the roughness sample block to visually inspect the sample.
7 Inspection Rules
Product inspection is divided into factory inspection and type inspection. 7.1 Factory inspection
7.1.1 Factory inspection shall be carried out in accordance with the provisions of GB2828, and a normal inspection sampling plan shall be adopted. Defects shall be calculated based on the number of unqualified products per 100 units. For the inspection items, unqualified classification, inspection level and qualified quality level, see Table 2. Serial number
1
2
3
4
5
6
7
8| |tt||9
10
11
12
13
14
15
16||tt ||17
18
19
20
Inspection items
Working pressure
Safety pressure
Sealing performance| | tt | Degree
Sanding surface roughness
Cancer
Components
Cleaning
Stretch marks
Pits
Scratches
Burr
Composite bottom
Connection
Logo
7.1.2 Determination rules
GB15066—94
Table 2
Unqualified classification
A
B
c
Corresponding terms
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.11
5.13
5.13
5.13| |tt||5.12.1
5.13
5.13
5.13
5.13
5.13
5.13
5.13| |tt||5.13
Inspection Level
S-1
S-2
S-2
Accepted Quality Level (AQL)||tt ||4.0
6.5
10
Excellent products are allowed to have one Category C failure, and the Category C failure should comply with the requirements of first-class products; first-class products are allowed to have one Two items of Category C are unqualified, and the two items of Category C that are unqualified shall comply with the requirements of qualified products. 7.2 Type inspection
7.2.1 Type inspection shall be carried out when one of the following situations occurs: a.
b.
c.
d.
e.
f.
Trial prototype identification of products transferred to factory production: After formal production, there are major changes in structure, materials, and processes that may affect product performance; during normal production, there are many cases every year Once;
When the product has been discontinued for more than 6 months and is re-produced, the factory inspection results are significantly different from the last type inspection; when the national quality supervision agency proposes a requirement for type inspection. GB15066—94
7.2.2 Type inspection is carried out in accordance with the provisions of GB2829, using a secondary sampling plan with discrimination level 1, and defects are calculated based on the number of unqualified products per 100 units. The samples for type inspection should be selected from the qualified batches of factory inspection. Before type inspection, all sample units should be inspected according to the factory inspection items. If any sample unit is found to be unqualified, it should be replaced by unit products normally manufactured in this cycle, and This situation is included in the type inspection report, but is not used as a basis for judging whether the type inspection is passed or not. For the inspection items listed in Table 2, the sample n = nz - 3, the unqualified quality level RQL value: 50 for Class A, 65 for Class B, and 80 for Class C; the unqualified classification, sample size, and unqualified quality of the remaining inspection items See Table 3 for levels.
Table 3
Serial number
1
2
3
Inspection items
Hygiene requirements
Composite requirements
Phenolic plastic parts
Unqualified classification
A
B
c
Note: The hygienic requirements inspection in Table 3 is adopted One time sampling plan. 8
Marking, packaging, transportation, storage
8.1 Marking
8.1.1 Products should have the following markings:
a.
b.|| tt||d.
e.
8.1.2
a.
b.
c.
d.|| tt||8.1.3
a.
b.
c.
d.
e.
f.|| tt||g.
h.
trademark;
company name,
quality grade;
product mark;
year of manufacture moon.
The product box should have the following marks:
trademark;
company name;
product name;
product mark.
There should be the following marks on the packaging box:
product name;
trademark,
product mark;
implementation standard number and name; ||tt ||License mark, number and validity period;
Manufacturer name, factory address, postal code,
Corresponding terms
5.9.1
5.9.2||tt ||5.10
5.12.2
Afraid of getting wet, upward, handle with caution signs, and should comply with GB191 regulations: other signs comply with GB6388 regulations.
8.2 Packaging
Sample size
n=3
n=n=3
n=n2=3
Unqualified quality Level
(RQL)
50
65
80
8.2.1 Each pressure cooker needs to be packed in a separate packaging box, and the pot body and pot The lid is packed with neutral packaging. There should be product instructions and certificates in the box. The instructions should indicate the product implementation standard number and name, license mark, number and validity period, factory address, and postal code. 8.2.2 The outer packaging should be fastened with packing tape.
3Transportation
8.3
GB15066-94
During transportation, no throwing, collision or heavy pressure is allowed. Protect from rain. Do not transport together with corrosive items. . 8.4 Storage
The warehouse environment is in good condition, and the relative temperature is not greater than 85%. a.
The height of the product from the ground and the distance from the wall are more than 100mm, b.
is not allowed to be corrosive items are stored together. c.
Additional notes:
This standard is proposed by the Ministry of Light Industry of the People's Republic of China. This standard is under the jurisdiction of the Daily Hardware Sub-Technical Committee of the National Hardware Products Standardization Technical Committee. This standard was drafted by Yangjiang State-owned Knife Factory and Guangzhou Aluminum Products Factory No. 3; Liaoning Fushun Stainless Steel Products Industrial Co., Ltd., Yantai Aluminum Products Factory, and Shenyang Shuangxi Pressure Cooker Manufacturing Corporation participated in the drafting. The main drafters of this standard are Tan Ren and Liao Zhihui. This standard refers to the Japanese industrial standard JISS2051-85 "Household Pressure Cookers and Steamers".
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