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GB 25037-2010 English PDF

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GB 25037-2010: Industrial rubber boots
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Standard similar to GB 25037-2010

GB/T 24129   GB 25038   GB/T 25036   

Basic data

Standard ID GB 25037-2010 (GB25037-2010)
Description (Translated English) Industrial rubber boots
Sector / Industry National Standard
Classification of Chinese Standard Y78
Classification of International Standard 61.060
Word Count Estimation 14,146
Date of Issue 2010-09-02
Date of Implementation 2011-07-01
Quoted Standard GB/T 528-1998; GB/T 3512-2001; GB/T 7759-1996; GB/T 13934-2006; HG/T 2403; HG/T 3083
Adopted Standard ISO 2023-1994, MOD
Regulation (derived from) Announcement of Newly Approved National Standards No. 4 of 2010 (total 159)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This Chinese standard specifies lined low profile, half conventional systems and high- vulcanized rubber men's and women's boots mining requirements, but also provides a lined high and 3/4 and thigh high boots and thigh Men's mining technical requirements, this standard does not involve rubber boots style, this standard applies to industrial and mining enterprises vulcanized rubber boots with general labor.

GB 25037-2010: Industrial rubber boots

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Industrial rubber boots ICS 61.060 Y78 National Standards of People's Republic of China Mining boots (ISO 2023.1994, Rubberfootwear─Linedindustrialvulcanized rubberboots─Specification, MOD) Published 2010-09-02 2011-07-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China issued

Foreword

4.3.1,6.1 this standard is mandatory, the rest are recommended. This modified standard international standard ISO 2023.1994 "Specification of vulcanized rubber shoe industry shoes lined" (in English). According to the present standard ISO 2023.1994 re-drafted. For more suited to China's national conditions, the use of this standard in the ISO 2023.1994 into when The line has been modified. This standard and ISO 2023.1994 with the main difference for the following reasons. --- ISO 2023.1994 standard Chapter 7, "mark", the contents of which only requirement for labeling products, but not exactly with our current Consistent standards, in order to regulate the market to Chapter 7, "mark" to "inspection rules, marking, packaging, transportation, storage," according to the specific HG/T 2403 standards. --- the actual situation underground mines, the thickness of the leg of 1.5mm to 1.7mm. This standard appendix A, to Appendix B, appendix C, Appendix D, Appendix E are normative, Appendix F is information appendix. The standard proposed by China Petroleum and Chemical Industry Association. This Standards Technical Committee (SAC/TC35/SC9) under the jurisdiction of rubber and rubber shoes National Standardization Technical Committee points. This standard was drafted. Jiangsu People's Republic of China Entry-Exit Inspection and Quarantine Bureau, Hebi flying crane Co., Ltd., Shenyang Huaning Shoes Ltd, People's Republic of China Entry-Exit Inspection and Quarantine Bureau in Huaian, Huaian Qingjiang shoes Co., Ltd. The main drafters of this standard. fee Yue, Sun Changqing, Wang Bao, Chen Shi, Ding Lichan, Xiao Huaiyu, Xu Jing. Mining boots

1 Scope

This standard specifies requirements for low-lined system, half of the system and high integration of men and women mining vulcanized rubber boots, also provides the liner with 3/4 high and thigh and technical requirements and thigh high boots for men mining. This standard does not involve the style boots. This standard is applicable to general industrial and mining work boots made of vulcanized rubber.

2 Normative references

Terms of the following documents become provisions of this standard by reference in this standard. For dated reference documents, all later Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to agreements based on this standard Whether the latest versions of these documents. For undated references, the latest version applies to this standard. GB vulcanized or thermoplastic rubber Determination of tensile stress - strain properties/T 528-1998 (eqvISO 37.1994) GB/T 3512-2001 Rubber, vulcanized or thermoplastic hot air aging and accelerated heat resistance test (eqvISO 188.1998) GB/T 7759-1996 vulcanized rubber, the compression set was measured (eqvISO 815 thermoplastic rubbers at normal temperature, high and low temperatures. 1991) GB/T 13934-2006, vulcanized or thermoplastic rubber flex cracking and crack growth measurement (subtype de Mexico) (ISO 132.1999, MOD) HG/T 2403 shoes inspection rules, marking, packaging, transportation and storage HG/T 3083 The term & shoes (HG/T 3083-2009, ISO 10335.1990, NEQ)

3 Terms and Definitions

HG/T 3083 to establish the terms and definitions apply to this standard.

4 design requirements

4.1 boots to help The leg of one or more layers composed of rubber and fabric. 4.2 Minimum thickness Appendix A measurement method, any portion of the thickness of the rubber boots are not lower than the value specified in Table 1. Under conditions followed cored bottom hole from the outer surface of the bottom of the heel (including the pattern) to the base of the core hole, a thickness of not less than 9.0mm. Table 1 Minimum thickness in millimeters Measuring the thickness of a thickness no pattern comprising tread thickness between the rib thickness Boots to help 1.7 Head Wai 3.0 Wai bottom heel 4.0 Other parts of the Wai 2.5 - - - Insole, and a sole pad (men) - 13.0 - 9.0 Insole, and a sole pad (Female) - 11.0 - 9.0 Table 1 (continued) millimeters Measuring the thickness of a thickness no pattern comprising tread thickness between the rib thickness There tread sole (Men's) There tread sole (Women's) No tread sole A pattern bottom heel (Men) A pattern followed by the bottom (women) No pattern followed by the bottom 9.0 3.0 - 7.0 2.5 - - - 5.0 25.0 - - 20.0 - - - - 20.0 4.3 Materials and components 4.3.1 shoelace, the metal member 4.3.1.1 laces When tested according to Appendix lace method B, should be subjected to an average of less than 11,000 abrasion. When shoelace test method according to Appendix C, the average tensile force of not less than 500N. 4.3.1.2 metal member As flammable and explosive environments wearer, should the use of lead, magnesium or titanium metal parts, should not be used more than the mass of the three metals Or 15% magnesium, titanium metal mass of more than 6% of the total mass of the total mass of the metal member. Note. should strictly comply with this requirement, to prevent rusting of steel or iron and the metal member rub each other excitation sparks cause fire or explosion accident. 4.3.2 Additional requirements High boots recommended range See Appendix F.

5 Physical properties

5.1 boots to help pull off force When tested by the method of Appendix D, the tensile force shall be as specified in Table 2. Table 2 boots to help minimize pull-off force The minimum pull-off force material length, width direction/(N/25mm) Woven knitting 5.2 after aging boots to help the flex resistance Along the longitudinal direction of the leg cut samples taken 4, 2 coincides with the longitudinal direction coincides with the width direction of the two, according to GB/T 3512-2001 Method of hot air aging test at a temperature of (70 ± 1) ℃, after 168h aging test method according to Appendix E. 4 flexion specimens subjected to consecutive number of times specified in Table 3, the surface was visually free of pinholes and cracks, and in accordance with GB/T 13934-2006 of Level 1 and Level 2 requirements. For this reason, it was observed only in the test sample is stretched portion, i.e., diamond-shaped fold, center-folding of the specimen Pinholes and cracks of mechanical damage do not count. Table 3 boots to help the least number of flex Specimen thickness T/mm Qu number of flex/time Handmade mold molded type T≤2.00 125000 75000 2.00 \u003cT≤2.25 110000 50000 T > 2.25 90000 40000 A tensile strength of 5.3 and an outsole heel and elongation at break Should be carefully grinding or cutting outsole and heel, making the sheet. The sheet size and thickness sufficient to at least 10 standard blanked Sample. Then predetermined GB/T 528-1998 tensile strength test outsole and heel end of the elongation at break. The test results should indicate Dumbbell type specimen. 10 has five test samples 5 test after aging before aging. To test three samples, the result should comply with the values of Table 4. If the value specified in Table 4 below, wherein the maximum value and high Specified in Table 4, the test should be added to the other two samples. Table 4 Tensile Strength bottom and an outsole heel and elongation at break The outsole thickness T/mm Tensile strength (minimum)/MPa Elongation at break (min) /% T≤9.0 8.5 250 9.0 \u003cT≤10.0 8.0 225 10.0 \u003cT≤11.0 7.5 200 T > 11.0 7.0 200 7.0 heel end 200 Tensile strength after aging and the elongation at break value than the corresponding rate of change of the predetermined value before the aging table should not exceed 5. Change in the tensile strength values in Table 5 and the bottom heel outsole aging and elongation at break Aging methods Maximum rate of change after aging Tensile strength Elongation at break According to GB/T 3512-2001 hot air aging side Method 168h aging at (70 ± 1) ℃ Aging -30% to 30% before aging value ± 20% of the previous value of The heel end of the compression permanent deformation 5.4 Oil lubricated bottom heel small specimens taken, predetermined GB/T 7759-1996 at (70 ± 1) ℃ test, compression set of not It should exceed 50%.

6 leak and soak requirements

6.1 Requirements Rubber boots when tested according to method 6.2, should be no air leakage. Low boots, shoes, eye or in the vicinity of the fork shoes leak, though not waste, but should Then 6.3 immersion test method, there should be no water to seep into the boots after the test. 6.2 Leak Test Procedure Mouth sealing system boots, charged pressure 10kPa air, the piece was immersed in water, so that water from within the system port 75mm, check for air Escape. 6.3 short boots immersion test The piece is immersed in water, the water inlet from the system within 75mm, and check remove water infiltration within the shoe after 16h. 7 inspection rules, marking, packaging, transportation and storage / T 2403 standards by HG.

Appendix A

(Normative) Measuring the thickness of the lowest A.1 Instruments Suitable selection of the measuring instrument A.1.1 ~ A.1.4. A.1.1 micrometer Precision of 0.1mm. A.1.2 Microscope Precision of 0.1mm. A.1.3 micrometer eyepiece With the indexing of the scale of 0.1mm. A.1.4 ruler Millimeter scale. Preparation A.2 insole thickness measurements, the gasket, and the bottom heel outsole sample From the midpoint of the outer header is followed by drawing a straight line in the center of the sole, and along this line perpendicular to the surface of the sole, the shoe completely Cut. As shown in FIG A.1 centerline, the boots placed on a horizontal plane, bear against a vertical plate, the vertical plate and the inner side of the shoe Tangential to the edge of the A, B points. Then placing two plates are perpendicular to the first one at right angles to the vertical plate, which is perpendicular to the main plate 2 and the sole Tangent to X, Y. Draw X, Y of the connection. The line is the center line of boots. Figure A.1 centerline rubber boots A.3 step A.3.1 boots to help Wai from the bead is not more than 15mm, from the port number of the total system 3mm, taken symmetrically about 4.00 port system, measuring the rubber to fabric The thickness of high boots and thigh, in the interface section measured at the following ~ 3mm thickness 1.5mm. A.3.2 head Wai From the centerline of the shoe in the head does not include the total measuring 6mm thickness of the rubber of the fabric in any pattern. When protection with header piece, from protection from the outer surface of the header does not include the total thickness of any measurement pattern with a rubber fabric. A.3.3 bottom heel Wai After 6mm from the bottom with the center line of the measuring total thickness of the rubber does not include any of the fabric pattern. A.3.4 other parts Wai In addition to the head portion and around the heel section, the other shoe Wai symmetrically around the take four point measurement does not include the total thickness of the tread rubber and fabric. A.3.5 insole, and an outsole spacer From the upper to the lower surface of the inner bottom surface of the outsole, insole measurement, the spacer and the total thickness of the outsole at the incision. Take the three points, including any flower Pattern, measured both in the thickness between the top pattern, also ribs. A.3.6 Sole Since the notch on the lower surface of the insole from the pad and, from the bottom to the apex of the heel dorsolateral more than 10mm, measured at the bottom heel cutout Thickness, including any pattern. Results are expressed A.4 All measurements are listed separately in millimeters (mm), the nearest 0.1mm.

Appendix B

(Normative) Determination of shoelaces abrasion resistance B.1 Test Equipment For laces to wear tester shown in Figure B.1. 1 --- A jig; 2 --- clamp B; 3 --- stent; 4 --- hammer; 5 --- shoelaces. FIG shoelace abrasion tester B.1 Abrasion tester is designed such that an annular bent shoelace tested, clamping clip A, clip A can be used for stroke 35mm Before and after the horizontal movement, the speed of the jig A is 60r/min crank mechanism driven by the flywheel. End of the second clamping shoe laces jig B , The gripper A, the closest point B from each other gripper clamp B A310mm. The other ends of the shoelace through a fixed loop is passed over the suspension bracket 250g of a heavy weight, so that the lace always wear test in tension, each test location may be automatically stopped when the specimen breaks with Car counter. The testing machine is also provided with a good presetting the count switch, when ground to a predetermined number of times, automatically shut down the machine controlled by a switch. Conditioning and testing environmental samples B.2 Lace should be (23 ± 1) ℃, relative humidity (65 ± 2)% environment adjustment 48h, and tested under these conditions. B.3 Sample Conditioned sample taken six pairs, each pair in a sample length of about 200mm, the other sample is about 500mm, the length may be sufficient A sample taken two shoelaces. B.4 Test procedure Each of the six samples were tested in accordance with the following steps, before the sample is sandwiched, a flywheel rotated by hand crank mechanism, the jig A, B to each other recent card point. B.1 required by sandwich sample. When all the machine parts are subjected to a load, is rotated by hand to check whether there are one week throughout the test period A sample and the other rubbing phenomenon. Start the machine so that there is a continuous operation until the specimen breaks. A note of the number of rotations, the test is continued until all eleven samples wear off, and The rotation number of the corresponding record. B.5 results Test results are shown with the rotation number at break, the calculation result of the arithmetic mean of six.

Appendix C

(Normative) Determination of tensile force laces C.1 Test Equipment Tensile testing machine. a 100mm/min ± 20mm/min pulling speed is constant, the tension in the range 0N ~ 1000N. pull Lace machine is equipped with jaws can be clamped or tether type clamp type. Of the jaw-shaped clamp should not scratch jig lace. C.2 Sample Three samples taken from the lace, each specimen shall be ensured that the length between the clamps is 200mm, if sampling from the belt shoe, Samples shall be taken from the three different laces. Conditioning and testing environmental samples C.3 Sample temperature (23 ± 1) ℃, relative humidity of 65% ± 2% environment placed 40h, and tested under these conditions. C.4 Test Procedure The specimen is clamped into the jaw or tether type clamp type, a clamp or clip type tether distance between the edge of the claw-shaped clamp is 20mm. start Machine, constant stretching speed 100mm/min ± 20mm/min, when the specimen breaks the force recorded. If the use of clamp jaw type specimen breaks, this is not a result, re-take new samples for testing. C.5 results indicate Calculating the average of three test results and as pull-off force of the sample expressed in Newtons (N).

Appendix D

(Normative) Boots to help pull off force test D.1 Test Equipment Tensile testing machine. a constant stretching rate, may indicate a maximum load capable of recording or when the specimen breaks applied. Two clamp testing machine Longitudinal center line of the tension should coincide with the direction, perpendicular to the edge of the front clip of the tension, two clamping surfaces on the same plane, holding the test When sample, neither the slide specimen, the specimen without cuts and abrasion, the jig should be slightly wider than the sample. Jig tensile speed of 100mm/min ± 20mm/min. D.2 Sample 25mm wide, taken from the upper, enough sample length, adapting it to the distance between the tensile testing machine fixture 75mm. Warp and weft fabric according to each of three samples taken when the product between the height of the cut-out jig allowed a sample free length of 75mm When, you can intercept 25mm specimen free length between the clamps. D.3 Test Procedure Each sample was sequentially sandwiched tensile machine, which measured the pull-off force. Results are expressed D.4 Upper longitudinal, transverse tensile force represented by the average of 3 samples, in Newtons (N). The size of the sample with the recording.

Appendix E

(Normative) Determination of flex resistance test E.1 Test Equipment E.1.1 micrometer Precision of 0.1mm. E.1.2 Flexometer Flexometer have a width of 25mm adjustable fixture for holding the fixed end of the sample, similar to the clip reciprocable With the other end of the sample holder. Reciprocating clamp should be installed so that the direction of movement of two overlapped and the center line of the jig in the same plane, the reciprocating stroke adjustment jig is The nearest distance between the two clamps is 13mm ± 1mm, the maximum distance of 57mm ± 1mm. An eccentric acting on the reciprocating mechanism driven by a constant speed motor flex frequency (340 to 400)/min, the same power of the motor should be able to When flex 6 samples, preferably 12 samples can flex. It should be arranged in groups with the number of samples of the other group when a group of flexion is straightened, thereby reducing machine vibration. At the same time we should be able to clamp the clamping And samples were adjusted for each sample. The test apparatus is away from any source of ozone. E.2 Sample E.1 sample size shown in FIG. And thinnest at least on the shoe portion of the system the number of layers of fabric four samples taken. Careful operation to ensure a clean cut from the sample and the sample taken. Measured by the center and each corner micrometer thickness, taking a median of 5 measurements of the thickness of the sample, the accuracy to 0.1mm. In millimeters FIG sample E.1 Flexometer E.3 specimen mount The sample symmetrically folded along a longitudinal axis, so that adhesive facing outward. The tapered end of the folded sample is inserted into the fixing jig, the two spaced most clip When far, the central axis of the sample in the middle of two clamps. Two tapered end of the sample to be aligned with the corresponding clamp edges. For operating convenience, in the test Cone-like marked at the nip, the sample is correctly placed in the fixture, the clamping fixture, the other end of the sample insertion and reciprocal clamping jig. Sample must not in tension. FIG E.2 arranged to flex and conditions during specimen testing machine. FIG E.2 flex arrangement and condition of the test specimen means E.4 Test procedure Qu torsion test according to a predetermined number of times. A clamp mounted on the reciprocating stroke of the counter recording the number flex machine. A fixture Reciprocating once fully flexion. Test environment temperature (23 ± 2) ℃. Remove the sample, pinholes and check cracking. Results are expressed E.5 Recording the number of flex, sample thickness, each specimen was visually whether there are cracks and pinholes.

Appendix F

(Informative) High boots High boots recommended range listed in Table F.1. High boots up measured from the rear in the shoe insole, comprising any flexible portion extends. Table F.1 millimeters high boots Measurements height Men Women Low system Half in the EC In the EC High Commission EC 3/4 Full system 115 to 179 180 to 239 240 to 329 330 to 429 640 to 699 ≥700 115 to 152 153 to 203 204 - 279 280 to 380 Note. boots to high standards and tolerances agreed upon by both supply and demand.

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