1、UDC 678.542.7 : 001.4 : 676.872 DEUTSCHE NORMEN SeDtember 195 c g .? a; L s: c $6 c c 2. .- *= bo mo c* o 200 oc c 2 gg $2 *= 0) c iz *= bo mo c* o 200 oc c 2 gg $2 *= 0) c tz 4mm ndivi- Indivi Indivi- dues values values min. min. min. kp kpcrn? 1: kp/crng hard- dual dtial dual Bulk den- sity Kind I
2、 2 10 mrn Individual -1ongi pans. t udin$ er se 8B Individual values min. 010 longi rano. tudinzerse oz B Individual values Indi- vidu- al ,alue glcm: 1,2 - to 1,45 min. I kp/crnZ Vulcanized fibre for general and mechanical purposes ff 31 11 Tubes Sheetr - 9) O) - ,engtht - Tubes 1,2 tl 115 ff 31 12
3、 tt 31 20 ff 3121 ff 3122 Vulcanized fibre for electrical applica- tions 12 1,45 42 ti to - 1,5 1500 Vulcanized fibre, horny Sheetr 9) - Sheetr 9) light grey If 3130 901601900 Vulcanized fibre, flexible red black grey f 3140 by agreement Vulcanized fibre, button quality Sheet: 9) - Sheeti 9) white,
4、other colourr agree- ment by f 3150 550 - Mw) - Vulcanized fibre, case quality brown, other colourr agree- ment by f 3160 .engthi O) f 3161 - Bold type indicates characteristic values for the type. *) Thickness = nominal thickness of the product 5) In lengths both sides can be of different coiours.
5、6, Regarding mandrel diameters for other thicknesses, see DIN 7738 7) For other thicknesses, see diagram DIN 7738 8) By these are meant quality properties which specially characterize the various kinds of vulcanized fibre without excluding other unlisted properties. DIN 7737 Page 3 27 17 18 19 20 21
6、 22 23 24 25 26 28 aracteristics Electrical properties Other Froperties - Flexibi: ity on wrapping test foi thick- ness) over O.: to 1 mm Diametei of mandrel Indenta- tion on indenta- tion teat Surface resist- ivity RO Indivi- dual values min. Q :lec tric ,trength ertical t Lane of he lami- nates 2
7、mm 7) E ndividual values min. kV/mm nsula- ion re ,ist anc ietween nserts RS ndivi- dual alues min. n - pres- Brineu) hard- Thick- ness) Indivi- values min. Characteri ti properties ) 8 Examples of application (extract/ I Thick- ness) 53mm Indivi- dual values min. mm mm high mechan- ical strength go
8、od machin- ing propertie for general pur- poses such as discs and rings, grinding wheels, containers, protective shields high mechan- ical strength 3ood machin- ing propertier 3ood electrics properties for electrical purposes such as spark extinction chambers, groove insulation, insulating plugs. an
9、d handles 108 108 108 - 120 0,w 10 - 120 0,w 10 - 120 0,04 10 5 to7 10 0,l - - - by agreement 5 to 7 - 0,l 12 12 I 5 to 7 - 0,1 I l l high bulk density, great hard- ness, very good machin- ing propertie eear wheels, choir boards (for textile industry) high flexibility“ packing washers special qualit
10、y for buttons, good machining properties buttons - extra good flexural and drawing pro- perties, smoothed surface cases 4 - 9) and strips cut from them. By “strips“ are usually meant products up to 600 mm in width. lo) and bands and strips cut from them. By “strips“ and “bands“ are usually meant products up to 600 min in I) by adding hygroscopic, inorganic salts or organic fiubstances a high moisture content is maintained which width. determines the high flexibility. The kind and content of the substances added shall be agreed upon.
