This standard applies to the roughcast of cemented carbide sealing rings for mechanical seals. JB/T 8871-2002 Roughcast of cemented carbide sealing rings for mechanical seals JB/T8871-2002 Standard download decompression password: www.bzxz.net

ICS21.140
Mechanical Industry Standard of the People's Republic of China
JB/T 8871—2002
Replace JET88711899
Blank of hard alloy seading ring for mechanical seal2002-07-16 Issued on December 1, 2002. Implementation: Issued by the State Economic and Trade Commission of the People's Republic of China. Foreword, Recommended reference documents, 3 Seeds and specification indication method, Technical requirements (except hot pressed products), Inspection rules and test methods, 6 Marking, packaging, transportation and grain storage. Appendix A (Informative Appendix) Flat ring (P) rough dimensions and deviations Appendix B (Informative Appendix) Table (HT) rough dimensions and deviations Appendix C (Informative Appendix) L-type face (with anti-rotation) (HIL) rough dimensions Appendix D (Informative Appendix) Face ring with 2-4 heads (HTR) rough dimensions Appendix E (Informative Appendix) T-shaped face ring (HIT) rough dimensions Appendix F (Informative Appendix) Rectangular groove ring (HTU) rough dimensions, JB/T B8712002
JB/T8871—2002
: This standard is a revision of B8871—1999 "Hard alloy seal rings for mechanical seals". This standard retains the parts of B8871-1999 that have been proven to be applicable, adds new specifications and new grades of hard alloy seal rings for mechanical seals in recent years, and classifies them according to alloy composition, adds a table of contents, foreword and reference names, and supplements the dimensions and tolerances of hard alloy seal rings included in the original standard and compiles them into the appendix for user reference. This standard replaces B8871—1999.
Appendices A to F of this standard are information appendices. This standard is proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the Mechanical Industry Machinery Seals Standardization Technical Committee. The drafting unit of this standard: Beijing Carbon Alloy Factory. The main drafters of this standard: Liu Qinglu and Wu Yuetian. This standard was first issued in 1988 and first revised in 1999. Model
Hard alloy seal ring for mechanical seal This standard applies to hard alloy seal ring for mechanical seal. 2 Normative reference documents
JB/T8871—2002
The following documents have become the references of this standard through reference in the technical specification. For all reference documents with dates, all subsequent corrections (excluding erroneous contents) or revisions are not applicable to this standard. All parties who reach an agreement on this standard shall study whether the latest version of this document can be used. For all reference documents without dates, the latest version shall apply to this standard. GB/T5242-1985 Inspection rules and test methods for cemented carbide products GB/T5243-1985 Cemented carbide packaging: transportation and storage GT3489-1983 Cemented carbide, determination of combined carbon (EY1504505:1978) YS/T400-1994 Cemented carbide grades
3 Varieties: Specification method
3.1 Cemented carbide sealing rings are divided into WC-Co alloy, WC-Ni alloy and WC-NiCo alloy according to their materials. 3.2 According to the shape, cemented carbide sealing ring blanks can be divided into: flat ring
HP (Fig. 1)
-HT (Fig. 2)
) L-shaped cross-section ring (with anti-rotation groove) -
with 2--4 anti-rotation control rings
T shadow full-surface ring
rectangular groove ring
-HTL (Fig. 3)
HTR (Fig. 4)
HT (Fig. 6).
JB/T 8871—2002
3.3 Representation method:
The product model number is composed of the military number and the number of the inner diameter of the blank ring: for reference! :
Deep inner diameter, single grid is m
One flat ring generation and
4 Technical requirements (except hot pressed products)
Rough inner grid: and position is mm
Xin still less number
With the main chemical composition and physical properties of the brand (see Table 1) according to YS/T004.1
On the chemical composition
(teacher weight. 56)
Alloy support
WC-NinCo
14.6...15.0
:4.5-:4.9
[3.4 --14.3
[1.1---11.8
1.5.0~15.3
Iodine elimination
1994 standard implementation
device illumination coefficient
wm·K: Sichuan intermediate discount
wastewater．
Liquid condensate,
Containing particles
The rest is the same as above
Hong Kong and Beijing
JB/T8871-2002
The general structure of each brand (see 2) refers to GBT3489-1983 and YST400-1994 standards. Table 2
Alloy
4.3 Hard alloy sealing ring size and tolerance. With positive (forest fraction, %) stone mother dye (volume fraction, not more than
A06EC6
4.3.1 Flat ring (HP) positive size and code. (See Appendix A: Taiwan bad (HT) size and deviation: (see B: 4.3.2
4. 3.3 L-shaped (anti-rotation) ring (ITL) (Appendix C) 4.3.4 HTR with 2~4 anti-rotation grooves. (See Appendix D) 4.3.5 T-shaped cross-section ring (ITTT) (See Appendix E) 4.3.6 Rectangular comb ring (HTU) (See Appendix F) 4.4 The tolerance value of the hard alloy sealing ring is not less than the corresponding size tolerance. The tolerance value of the hard alloy sealing ring is not more than half of the corresponding size tolerance. 4.6 The depth of the edge and corner of the ring is not more than 3.3mm: 4. The surface of the hard alloy sealing ring shall not have defects such as bulging, blistering, shaving marks, over-burning and under-burning. 200
4.8 The cross-section of the rough surface shall be uniform and free of defects such as core, gas, delamination, cracking, severe carbonization, desulfurization, etc. 5 Inspection rules and test methods
The inspection rules and test methods for the rough surface of hard alloy sealing rings shall be carried out in accordance with GB/T5242-1985. 5.2 In the case of product trial production, replacement of substitute materials, formula and process change, all the contents of this inspection rule and inspection method shall be measured and tested. 6 Marking, packaging, transportation and storage
The marking, packaging and storage of the rough surface of the modified alloy ring shall be carried out in accordance with GB/T5243-1985. 6.1
When the rough surface is packed, there shall be preventive measures to prevent it from being damaged during transportation. 6.3
The packing box should have a moisture-proof code mark.
The sealing ring should be marked on the packing box when it leaves the factory, and there should be a product certificate in the box, which should indicate a)
Manufacturer name and trademark:
Manufacturer brand number:
Product batch number:
Product model:
Weight (effective weight):
Standard abbreviation:
Packing date:
Technical supervision department inspection
JB/T8871—2002
Appendix A
(Informative Appendix)
Dimensions and deviations of flat ring (TIP)
Location, mm
Table A.1 ()
±1-75 ​​
J/T 8871—2002
.TB/T8871--2002
Appendix B
(Informative Appendix
Taiwan ring (HT) gross dimensions and deviations
r(-1.5.~2.0)
Unit: ra
HTL1!·17
HTL59S6
HTL39·1UI
55-124
Table Bt (Continued)
Appendix
Basic limit
(Pale material attachment)
Type B surface (with anti-joint groove) (HTL) rough size E
Basic R size
16~·22
26--43
4B--114
39~·101
22 ~ 25
JB/TaR71-2002
Single welcome:
2.0-·2.5
JB/T8871—2002
HIRI9--31
HTR33--43
HTR48--58
HTR63--76||tt ||HIR83--123
11TT9--16
HTT17--25
HTT26~35
HTT3&~45
HTT46--51| |tt||H TT52--60
HTT270
HTT71~89
HTT92114
HTT117--165
27--40
43-- 53
(Informative Appendix)
With 2~4 anti-turntable rings (HTR) Gross size force
23~·36
38~-49|| tt||59.6--69.6
75.6- 91.6
100~ 143
36--44
45 --53
58--68
69--80
81--87
94--#02
104--112
113 ~131
134--156
178-232|| tt||54 ~·65
70--86
91--133
19--31
33 --43
48~-58
63--78
83·123
Appendix E
《Informative Appendix）||tt| |T-shaped tender ring (ITT) rough size
Basic size
27~-35
45-~54
56 -67
69 --74
78-- 86
97·-115
116--140
156-~ 207
17.3~-25.2| |tt||36,7~ ·44.6
52.6~60.5
71.6~-89.1
92.3-~114.5
117·~1
Odd: m||tt| |1.5 --2.0
1.5 --2.5
Unit:
HTI[13-
HTTJ2A- 18
HTUSI. CAbzxz.net
HTU67~77
HTL79--63
IrU95--102
28--41
F6-~83
92--102
129--134
Appendix F
(Informative Appendix)
Rectangular eave ring (HTL) rough dimensions
6E --74
102 -115
115121
75--4R
51·~ 64
67·~?
79 ·~93
95--102
JB/T B871—2002
Unit: m
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