This standard specifies the thermal adaptability test method for optional spark plugs for automobile and motorcycle engines. This standard applies to the thermal adaptability test of optional spark plugs for automobile and motorcycle engines. This standard does not apply to the thermal adaptability test of optional spark plugs for traffic jams and special vehicles. JB/T 6771-1993 Thermal adaptability test method for optional spark plugs for automobile and motorcycle engines JB/T6771-1993 Standard download decompression password: www.bzxz.net

Aviation Industry Standard of the People's Republic of China
HB6771-93
Silver-based solder
Published on October 31, 1994
China Aviation Industry Corporation
Implemented on December 1, 1994
Aviation Industry Standard of the People's Republic of China
Silver-based solder
Subject content and scope of application
HB6771--93
This standard specifies the classification, grade, specification, chemical composition, technical requirements and acceptance rules of silver-based solder. This standard applies to solder used in gas flame brazing, furnace brazing, induction brazing and other process methods for aviation products. Cited standards
GB6208
GB11067
GB5121
GB3826
GB3260
GB10046
GB1480
GB5314
Classification and grades
Solder grade indication method
Silver chemical analysis method
Copper chemical Analysis method
Chemical analysis method for zinc
Chemical analysis method for pick
Chemical analysis method for tin
National standard for silver-based solder
Determination of particle size composition of metal powders Dry screening method Sampling method for powder metallurgy powder
The solder grades in this standard are preceded by the prefix "H" representing aviation before the grades specified in GB6208. 3.2
The classification and grades of solders are listed in Table 1.
Silver aluminum manganese
Silver copper phosphorus
Silver copper tin
China Aviation Industry Corporation issued grades on October 31, 1994
HBAg50Cu
HBAg72Cu
HBAg85Mn
HBAg94AIMn
HBAg71CuP
HBAg60CuSn
Implemented on December 1, 1994
Silver copper zinc
Silver copper nickel lithium
Silver cadmium zinc copper
Silver zinc copper manganese nickel
Silver copper zinc tinWww.bzxZ.net
HB6771-93
Table 1 continued
Shape: Needle materials are supplied in the form of wire, powder, paste, thin strip and granules. Specifications and allowable deviations
HBAg45CeZn
HBAg50CuZn
HBAg65CuZn
HBAg70CuZn
HBAg72CuNil.i
HBAg50CdZnCu
HBAg4oCdZnCuNi
HBAg49ZnCuMnNi
HBAg56CuZnSn
The diameter of the wire solder is divided into 0.5, 1.0, 1.5 and 2.0mm. The allowable deviation of the diameter is ±0.05mm. The specifications and allowable deviations of the thin strip solder are listed in Table 2. Table 2
Allowable Deviation
20.30.40.50.60
100,150,200
Shapes, specifications and allowable deviations of solder not specified in this standard shall be determined by negotiation between the supplier and the buyer. Technical Requirements
6.1 Composition: The chemical composition of the solder shall comply with the provisions of Table 3. 6.2 Appearance
6.2.1 The solder surface shall be smooth and free of defects such as oxidation color, delamination, cracking and oil stains. mm
Allowable Deviation
≥500
6.2.2 The solder is allowed to have defects such as abrasions, scratches, pits, bumps, burrs and cracks that do not exceed the allowable deviation. Thin Strip 2
The edges and ends of the solder shall be neat.
HB6771-93
6.2.3 Other metal or non-metal powders shall not be mixed into the powder solder. 6.3 Performance
6.3.1 During the heating process of brazing, the paste solder shall not produce bubbles, splashes and carbon deposits. 6.3.2 During flame brazing, the paste solder shall not be moved from the placement position before melting, and the residual brazing flux shall be easy to remove after welding. 6.3.3 Under appropriate brazing process conditions, there shall be no unmelted residues and gray or black oxides on the surface of the molten solder.
6.3.4 The shelf life of the paste solder shall not be less than 6 months from the date of production. 6.4 Batch composition: Each batch of solder shall be of the same brand, the same furnace number, the same specification and the same supply status. 7 Test methods and inspection rules
7.1 The chemical analysis method of solder shall comply with the provisions of GB11067, GB5121, GB473, GB3826 and GB3260, etc. The determination of lithium shall comply with the provisions of GB10046. 7.2 The particle size of powder solder shall be screened in accordance with the provisions of GB1480, and the powder sampling shall be carried out in accordance with the provisions of GB5314. 7.3 Each batch of solder shall be chemically analyzed, and its composition shall comply with the provisions of Table 3. If a certain element is found to be unqualified, double samples shall be taken for re-inspection. If one of them is unqualified, it shall not be used in aviation products. If other elements are found in the routine analysis, further analysis shall be carried out. If it exceeds the "total amount of other elements" specified in Table 3, the batch of solder shall be deemed unqualified. 7.4 The solder shall be inspected for specifications and appearance quality in accordance with the provisions of 5.1, 5.2 and 6.2. Five pieces of solder shall be sampled for each batch according to the minimum packaging. If there are less than 5 pieces, all of them shall be inspected.
7.5 The solder shall be inspected for performance in accordance with the provisions of Article 6.3. If the inspection result is unqualified, the unqualified items shall be double sampled for re-inspection. If it is still unqualified, the batch of solder shall not be used in aviation products. 8 Packaging and marking
8.1 The solder shall be packed with reliable and firm packaging, and the powder solder shall be sealed in a container. 8.2 The solder shall be accompanied by a certificate of inspection, which includes: chemical composition;
appearance inspection;
specification inspection.
8.3 The marking shall include the following:
Brass brand and name;
furnace number or batch number;
specification or size;
manufacturer mark;
weight (net weight);
date of manufacture (including shelf life);
inspector code, certificate number;
h trademark.
HB6771-93
102909
128992
018022
006962
126528
050986
006~622
096-098058082||tt ||Yuan Le et al
8~59~0
~800~0
92~081921501~0
002800
0906599
so1~9'6
5*6~9*6
Additional notes:
HB 6771-93
This standard was proposed and managed by the Aviation Materials and Thermal Process Standardization Technical Management Unit of China Aviation Industry Corporation. This standard was drafted by the 621 Research Institute and 430 Research Institute of China Aviation Industry Corporation.
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