Some standard content:
JB/T10153-—1999
This standard is formulated to unify the types and specifications of abrasive blocks based on the rapid development of domestic finishing technology and combined with domestic production levels and usage requirements.
This standard is proposed and managed by the National Technical Committee for Standardization of Abrasives and Grinding Tools. The drafting unit of this standard: Sisha Co., Ltd. The main drafters of this standard: Yang Cheng and Dong Qiancheng. 568
1 Scope
Machinery Industry Standards of the People's Republic of China
Ordinary Abrasives
Tumbling Abrasive Blocks
Bonded Abrasive Products-Tumbling Chip AbrasivesJB/T 10153—1999
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking and packaging of tumbling abrasive blocks (hereinafter referred to as abrasive blocks). This standard applies to ceramic and resin bonded tumbling abrasive blocks. 2 Cited standards
The clauses contained in the following standards constitute the clauses of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T 2476--1994
Ordinary abrasives
GB/T 2481. 1~2481. 2—1998
GB/T 2484—1994
GB/T 2490--1984
GB/T 2495--1996
GB/T2828—1987
JB/T 7999—1995
3 Product classification
Ordinary abrasives
Abrasives for bonded abrasives
Codes and markings
Methods for testing the hardness of abrasives by sandblasting hardness machine Packaging of ordinary abrasives
Batch-by-batch inspection Sampling procedures and sampling tables for counting (applicable to inspection of continuous batches) Determination methods for bulk density, total porosity and water absorption of abrasives The shape, code and basic dimensions of abrasive blocks are shown in Table 1. 3.1
Spherical abrasive blocks
Triangular abrasive blocks
Oblique triangular abrasive blocks
National Bureau of Machinery Industry 1999 -10-08 Approval code
B:3,4,5,6,8,10,13,16,20
B.3.6,10,20,25,30,40
L:3,6,10,13,16,20,25,30,40
B:6,10,16,20,25
L.6,10,13,16,20,25,30
：23.45°
Shape size mark
TP-BXL,α
2000-03-01 Implementation
Cylindrical grinding block
Oblique cylindrical grinding block
Rhombus grinding block
Square grinding blockWww.bzxZ.net
Conical grinding block
Triangular pyramid grinding block
JB/T10153—1999
Table 1 (end)
Basic dimensions
B.6,10,20,25
L:6,10,16,20.25
B.4,6,8,10,13,16
L:10,16,20,25,30
α:22°, 45
B.25,40,45,50,55
C.16,30,35
L.10,16,20
B:6,10,16,20.30,40
B:10,16,20,25,30,40
C:10,16,20,25.30,40
B:10,13,16,20,25
3.2 The abrasive code and its particle size shall comply with the provisions of GB/T2476 and GB/T2481.1 and 2481.2. 3.3 The binder code shall comply with the provisions of GB/T2484. 4 Technical requirements
4.1 The limit deviation of the basic size of the grinding block is shown in Table 2. Table 2
Basic size
>6～30
4.2 The grinding block should not have cracks, black core, foaming and inclusions. 4.3 The sandblasting hardness value of the ceramic grinding block should not be greater than 1.30mm. 4.4 The water absorption rate of the ceramic grinding block should not be greater than 1%. 570
Limit deviation
Shape and size marking
RP-BXL,α
D-BXCXL
CO-BXC
5 Test method
5.1 Visual inspection of appearance quality.
JB/T10153—1999
5.2 The limit deviation of basic size is measured with a vernier caliper or steel ruler. 5.3 Hardness is tested with a 28cm sand chamber hardness machine according to GB/T2490. For abrasive block products whose dimensions do not meet the sandblasting hardness test conditions, the manufacturer can prepare samples that can represent the quality level of this batch of products and meet the sandblasting hardness test conditions for hardness testing. 5.4 Water absorption shall be tested in accordance with the provisions of JB/T7999. 6 Inspection rules
6.1 Product factory inspection shall be carried out in accordance with the provisions of Chapter 4 and Chapter 5. 6.2 Hardness, appearance, size and water absorption shall be sampled and inspected in accordance with GB/T2828: the sampling plan adopts a single sampling plan;
The inspection level adopts the special inspection level S-3; the classification of unqualified items and the qualified quality level AQL shall be in accordance with the provisions of Table 3. Among them, Class B unqualified items are counted by block, and Class C unqualified items are counted by item.
Defect classification
Class B non-conformity
Class C non-conformity
7 Marking and packaging
7.1 Abrasive block products should have the following markings:
a) Manufacturer name or trademark,
Defect items
Hardness, crack, black core, foaming
Water absorption, dimensional limit deviation, inclusions
b) Product name, shape, specification, material, particle size, binder, standard number; c) Year and month of manufacture.
7.1.1 For products with smaller sizes, labels can be attached to the packaging instead. 7.1.2 The markings must be clear, neat and firm, and meet the requirements of transportation, storage and preservation. 7.2 The packaging of abrasive block products shall comply with the provisions of GB/T2495. 7.3 The product shall be accompanied by a certificate of conformity.
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