Some standard content:
ICS 25. 220. 40
National Standard of the People's Republic of China
CB/T11376—1997
eqv 1SO 9717:1990
Phosphate conversion coatings for metals
Phosphate conversion coatings for metals1997-07-25Promulgated
Implementation on 1998-02-01
State Bureau of Technical Supervision
GH/T11376-1997
This standard is a revision of GB11376-89 based on 1SO 9717:1990Phosphate conversion coatings for metals-Methods for determining their technical requirements. In terms of technical content, it is equivalent to the international standard, and the writing rules are in accordance with GB/T1.1-1993. This standard adds the foreword and the first part of IS9719 in accordance with the provisions and format of GB/T1.1-1993. In terms of specific technical details of the standard, the fourth "formation and stripping method" in the original GB11376-89 is listed in the appendix of this standard; at the same time, the heat treatment after aldehyde treatment and the ninth "post-treatment" are added. In the referenced standards, GB12609-00 Electrodeposited gold screen coating and related precision counting sampling inspection procedures are added. This standard replaces the appendix A, B, C, DE, FCH, and I of the original GB113769 metal phosphorus conversion film standard from the date of its release and implementation. This standard is proposed by the Ministry of Machinery Industry of the People's Republic of China. This standard is under the jurisdiction of the Technical Committee for Standardization of Metallic and Non-metallic Coatings, and the responsible drafting unit of this standard is Wuhan Material Protection Research Institute of the Ministry of Machinery Industry. This standard was mainly drafted by Da Daoqin and Du Wentan. This standard was first issued in June 1989.
SR/T 11376--1997
ISOForeword
ISO (International Organization for Standardization) is a worldwide federation of national standards bodies (ISC member bodies): The work of preparing international standards is mainly carried out through technical committees of the ISO. Each member body has the right to make representations to the committee if it has any interest in the subject matter determined by the first technical committee. International organizations, governmental and non-governmental, with related interests, may also participate in the work. In all aspects of electrotechnical standardization, ISO cooperates with the International Electrotechnical Commission (EC).
Draft international standards prepared by technical committees are first submitted to the member bodies for voting according to the S procedure. At least 90% of the voting member bodies must approve them before they can be published as international standards. International Standard iSC9717 is developed by 1SO0/T107 Technical Committee for Metallurgy and Engineering. Appendix A, B, C, ID, E, FGH and Appendix Introduction to this International Standard
National Standard of the People's Republic of China
Metallic Conversion Coatings
Paosphele Converslon Coalings for Metals GB, T11376--1997
eqy1597171990
Alcohol conversion coatings are applied to gold, tungsten, sample and alloys. It can be used as the final finishing material or as the intermediate material for other materials. The common effects are:
) Enhance acid elasticity;
6) Improve the adhesion between the substrate and the coating or its low organic finishing layer; c) Improve the cold processing properties of the material such as wire drawing, tube drawing, pressing, etc.; d) Improve the surface barrier properties to promote its sliding. The main fogging process guidance is shown in Appendix A (shown in Appendix A), and the film and post-treatment effects of each final application are shown in Appendix C and Appendix E (shown in Appendix A).
1 Scope
This standard specifies the method for determining the phosphate conversion requirements, mainly applicable to ferrous metals, aluminum, zinc, saw and their alloys. 2 References
The provisions contained in the following standards constitute the active text of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standard parts will be The parties using this standard should explore the possibility of using the latest versions of the following standards. GB9792-88 Determination of the unit surface area of the conversion film on metal materials. Gravimetric method (EAVIS03R92: 1980) G12609-90 Standards for the inspection of metal coatings and related precision counting sampling procedures (E-1SD4519.1980) GB/T10125-1997 Human intake load test zero test (C9IS09227: 1550) 3 The supplier shall provide the estimated value
Note 1: The manufacturer and the specialized film manufacturer shall closely coordinate the relationship to obtain the desired conversion film and avoid adverse effects on the mechanical properties of the workpiece.
3. The purchaser shall provide the supplier with necessary standard information: a) national standard number; b) nominal or graded, specification and metallurgical state of the base material; c) selected sampling procedure and required qualified quality level (see Chapter E); d) classification symbol of the film layer (see Chapter 4); e) unit Area film quality (see 7. Concept). The supply and demand parties shall determine the film thickness required (see 7.2 of the property 5): [) Requirements for post-treatment (see 4.2d) 1) Surface treatment before phosphating (see A2 of the appendix A): h) Surface appearance <see 7.1)
i) Corrosion resistance requirements see 7.3 and Appendix H (Appendix H for reference)] National Technical Supervision Commission 1997-07-25 approved 1998-02-01 implementation
3.2 Additive information
CB/T 113761997
When the supply and demand parties agree that it is necessary, they may request the following additional information: The requirements for stress elimination before phosphating and (or) mechanical elimination after phosphating are shown in the appendix of the record. 4 Phosphate coating symbols
4.1 Film type
The main types of phosphating coatings and their symbols are shown in Table 1. Table 1 Main types of phosphating coatings
Acid
Phosphate coating
Phosphate coating
Phosphate coating The correct cooking
work must be done with the divine power to deal with the photograph
ZnCzph
standard 2: There are also other types of membranes, including the use of, and (or understand the improved zinc system, the improved metal book with the fertilizer test of Xia Yi, 2nMePU,), 4H.O. Among them, Me represents disease (『, class attack hope, evaluation salt is the main metal wind of this type of brand layer, in order to prevent the occurrence of chaos and not single plastic to the part of the knowledge. The exchange should pay attention to the enterprise adjustment of the matrix material in the distance into the conversion degree. 4.2 Classification symbols of phosphate coatings The classification symbols of phosphate coatings are composed of the following four parts: a) Samples of the types of phosphate coatings listed in Table 1; 1) Symbols indicating the function of the phosphate coating:
- Corrosion protection
- Sliding promotion:
- Cold forming promotion;
c) The quality of the coating per unit area, in units of 8, m-1, with an allowable corrosion error of ±30%6; d) Special symbols indicating the post-treatment of the phosphate coating:
Color paint, clear or similar materials;
Photosensitive agent: Non-film-forming organic compound sealing filling: Dyeing:
Oiling, grease;
Soaping:
Alcoholization film classification Classification symbols do not necessarily include the names of the individual plastic parts. For example, for those that do not require post-treatment, only three parts are needed. Combination post-treatment can be used, such as dyeing (e) followed by chrome oil (> or sealing (d), followed by coating (a). Examples of classification symbols for phosphorus alkoxide conversion coatings are as follows: Classification of zinc-based instant coatings with a unit area layer mass of 3 g-m-± U.Sg.m- after coating Znphr3a
5 Sampling
The test pieces shall be selected according to the corresponding procedures specified in G.12.0. These test pieces shall be the same as the metal or alloy they represent and shall have similar surface characteristics. 6 Treatment of substrate hardware before catalysis
6.1 Stress relief
GD/T71376-1997
If the purchaser requires stress relief (see S.2): then the necessary treatment should be carried out on time. 6.2 Shot peening treatment
See F1 of F,
7 Iodate conversion coating
7.1 Appearance
The surface should be inspected in accordance with the provisions of Appendix G (Recommended resistance) to evaluate the film's appearance (color and product particle size) and uniformity. 7.2 Coating quality per unit area
The film quality per unit area shall comply with Appendix B, C, D,E's corresponding suggestions should be followed, and the measurement should be carried out according to the corresponding methods specified in GB9792.
3 In order to ensure the integrity of the film layer, a method that can directly read the unit area mass of the film layer can be used to measure the film layer, but before the measurement, a standard film detector with a known position consistent with the one to be measured should be used.
4 If necessary, the type of the film layer can be identified by a method with recorded end points. 5 If it is heavy, the corrosion resistance of the acid plate is sometimes expressed in the term "film thickness", which is particularly suitable for quality analysis. The supply and demand sides have reached this book (and the relevant test registration side) to assist in the collection of other properties of the 6-injection, such as surface and grain size, which can be determined by the supply and demand and the parties. 7.3 Pre-reducible
The corrosion resistance of phosphated parts should be determined by the corresponding methods specified in the record H. 7.4 Suitability for low-impedance cold forming
Because it is difficult to simulate actual processing conditions, the test method for the adaptation of the phosphate film to promote cold forming is not specified. Therefore, the appropriate chemical membrane should be selected according to the efficacy in Appendix D.
7.5 Suitability for promoting swimming
Since it is difficult to simulate actual processing conditions, the technical specification specifies the test method for measuring the suitability of chemical membranes for promoting swimming. Therefore, the appropriate chemical membrane should be selected according to the proposal in Appendix E.
8 Treatment after chemical treatment
If the purchaser requires the elimination of static electricity (3.2), the necessary heat treatment should be carried out according to F2 of Appendix F. 9 Post-treatment
If the manufacturer specifies that the surface of the chemical membrane should be treated with chemical treatment (see 3.I) , then the density of H, C, and E should be corrected and necessary treatment should be carried out.
GB/T11376-1997
(Instructive Appendix)
Guidance Information
Using the corresponding monohydrogen fluoride salts listed in Table A1 as the main component of the solubility, the fluoride conversion film can be obtained. These films are mainly used on iron metals, aluminum, zinc, and their alloys. The unit area mass and apparent density of the film are different due to the following reasons: a) the material and surface state of the instantaneous parts; b) single-stage mechanical or chemical treatment method The phosphate conversion membrane used in the above method has pores, but they are sealed by appropriate post-treatment. The main types and characteristics of phosphate conversion membranes are shown in Figure 1. The main types and characteristics of phosphate conversion membranes are shown in Figure 1. The main components of the phosphate conversion solution are Zn(H2PO4)2n(HP)CeCHPO4, Mn(H2PO4)M+(I)H, )
Fe(H,PO,)
Type of reflection
Membrane number
Sen co-chemical film
Bian-system
Phosphating film
Heng system monument chemical Kang
Excitation focus metal test
Fast salt conversion film
(If it is iron material
There is also fast oxidation
Iron (［Bobei
ZnCap'n
1)Me(1) indicates that the city gold Zhouyang Gaozi or NHtA2 is pre-treated||tt| | Desert layer exogenous
full to maintain color. Quality state
shallow to glow color, quality crystal set
my home to dark extinguishing color, single crystal
static (1.1~11g·m- non-quality
shadow iridescent film, (such as light brown to blue
happy color, the weight of the layer is more than
1#.m base color)
dark gray also, quality
long material
unit back to the shield good
A2, 1 before phosphating, should be used suitable for a specific phosphating process of one or more force method In order to remove the knots, rust, sleeves, grease, fingerprints and foreign objects on the surface to be phosphated, a method that does not produce coarse grain structure should be adopted. In order to avoid the formation of coarse crystalline phosphating film with too large mass per unit area, arc acid and strong alkali should be used as little as possible or not at all for cleaning. If the state of the workpiece before iodination requires such cleaning, it should be cleaned with a towel and wet dye. The workpiece treated with iodine should be thoroughly cleaned in cold water and water to remove residual liquid. Otherwise, once the residual liquid is brought into the phosphating tank, it will destroy the quality of the tank liquid and directly affect the phosphating effect. The above situation can be improved by using a salt surface adjustment. Titanium surface adjustment can be used It can be used alone or added to the cleaning liquid, which can reduce the number of processing steps. Note that some chemical processes combine surface treatment with chemical treatment. A2.2 In the case of pickling, it is necessary to add an aldehyde-free or active-sensitive adsorption film without wetting agent or slow-etching agent after pickling in a pickling solution containing a wetting agent or a light-etching agent. 4
43 Chemical treatment methods
GB/F11376-1997
Chemical treatment is generally completed by immersing the workpiece in a chemical treatment medium and spraying or coating the workpiece in various ways. Continuous plates can be transported through the phosphating plant by reels for continuous online phosphating. After phosphating, the workpiece should be washed with water, blasted, etc., and post-treatment is required if necessary.
Note 9, the general product of the phosphating reaction is phosphating, which does not hinder the phosphating process, but will increase the chemical quality. Avoid excessive phosphating. For metal deficiency, zinc, zinc, and other metals, the following related phosphite conversion and post-treatment suggestions are shown in Appendix B, C, D and E respectively.
Corrosion protection,
Improve the adhesion and corrosion resistance of the substrate with the paint, cleaning and related coatings: .-Promote the formation of phosphating
Promote lubrication.
A4 Post-phosphating treatment
See Appendix P (Indicative Appendix) F2.
Appendix B
(Indicative Appendix)
For the construction of iodate conversion coatings and post-treatments for phosphating, see Table B1. Table B1 Post-treatment recommendations for high phosphate coating candle resistance Base metal
Coal material
Type of fiber
ZnCaph
Inhibition film
Layer quality per unit area
0. 1-≤1. 5
>5, preferably>1C
>5. Preferably>10
lip treatment
resistance load
type application and practical
in tender (no blue avoidance)
machine parts in the factory
temporary bacterial protection
in dry (no precipitation) environment
medium and long-term protection
in sheep bomb environment (no thunder
Teng Yue dry canal cover rust prevention: smell) medium and long-term protection, in oily outdoor
with isolated elements
temporary protection
planned deposit (or 24)
Machine parts are placed in a room for a long time
and incubated for a long time:
In order to improve the corrosion resistance of the phosphating film, some organic compounds containing chromic acid are usually used for post-treatment. For example, special acid is this organic resin. After phosphating, the workpiece is directly exposed to water without phosphate treatment, and then washed with deionized water. The corrosion resistance of the phosphating film without post-treatment is lower than that of the treated one. To improve the corrosion resistance of this type of phosphating film, in addition to the above-mentioned treatments, the surface can also be treated with anti-rust oil, grease and wax. This treatment can achieve long-term protection effect. G8/T11376-1997 (Recommendations) Recommendations for improving the color, adhesion and corrosion resistance of phosphating materials. Table C1 lists the post-treatment processes for improving corrosion resistance and adhesion of phosphating materials. If the workpiece is painted, lightly rolled or coated with organic aldehydes after phosphating, it should first be cleaned with clean running water, and then it is best to treat it with demineralized water to ensure that the phosphating surface is clean and does not carry any residual liquid from the previous process, otherwise it will produce sand after the organic film is applied. It is also important to ensure that the phosphating surface is not contaminated by dust and dirt. Table C1 Base metal tone Material shortage Material mold type I znph -.ZnCayh-
Single drinking surface layer
It is best to be 1·
Appendix D
(Suggested background)www.bzxz.net
Post-treatment
Typical air and examples
Color rate, cleaning and related degreasing car body, refrigerator pill washing table will
To promote the cold forming of phosphorus bile salt assisted waist blue machine external filling
Six car body replacement forming
The pole and strip material·especially
Organic post-treatment medical
The situation of curvature
Zinc series elastic film is the preferred cold working lubricating chemical. Table D1 is the standard for the quality of the membrane per unit area. Table 1 is a discussion on the quality of the cold-skinned phosphoric acid pad conversion film per unit area. The quality of the membrane layer per unit area
5·-15
Mesh wire drawing
Welding and mesh drawing selection
Dense system general drawing technology
Reducing sleep and controlling extrusion
Maintaining thickness without wall thickness change
Thickening and pressing
Phosphoric acid should be washed and neutralized by weak alkaline water. When the workpiece after drawing is immersed in soap filling or coated with soap powder, soap lubrication will be generated. The chemical will react with the zinc oxide layer to form elastic zinc on the surface. Before the tight lubrication, the drawing wire can also be treated with sand, stone or silicate solution. They play the role of lubricating the body. 6
CA/T11376—1997
Appendix E
(Appendix for reference)
Recommendations for sulfonate conversion coatings that promote sliding actionSulfonate films are generally considered to be disc layers with friction reduction properties. Table E: is the recommended quality data for the general surface films that should be used for different friction reduction requirements.
The following points require special attention:
) Although manganese series are the first choice for consideration, other types of films, such as zinc series films, can also be used. In fact, in the field of thin films, the choice of chemical process should be based on the stress conditions of the workpiece. 6) The following requirements include tolerances for the size of the workpiece.
c) Generally used in combination with appropriate lubricants in applications. Table E1 Recommended application of unit area film quality of the film for the re-sliding film
For small parts such as refrigerators
For large parts, we reduce the stress of the gear
F1 Stress relief of cyclic
F1.1 Overview
Membrane quality per unit area
Supplement F
(Appendix of suggestion)
Guide to heat treatment of steel
Mainly acid super film
(In the case of long)
Mainly Salinity film
(Iron content in the brand)
Appropriate heat treatment can eliminate the stress of the film and the incompatible stress. It helps to withstand continuous load and resist fatigue damage. Heat treatment at 400℃ or above can eliminate the internal stress generated during fire. Heat treatment at 200°C or above can eliminate surface stress generated during machining, while beneficial surface stress generated by shot peening or surface rolling should not be eliminated. The stress elimination heat treatment process should be carried out before flow, but in some cases, degreasing can be carried out before heat treatment. The final machined aged steel may not require stress elimination. F1.2 Cold-melting workpieces
Cold-melting work may require stress elimination, which does not affect the degree of material conversion. F1.3 Workpieces with a tensile strength of (1000~-14002V.mm*) made of tensile strength (000~14CU)V,mm-previous steel should be heat treated at 130~230)℃ (preferably close to 23℃) for not less than 60min after the last tempering and after tempering or other deep strength machining to eliminate stress, or treated at a temperature of 5~3mil at the tempering temperature. After sufficient degreasing and complete elimination of the degreasing agent, the tempering treatment should be carried out again. For workpieces that have been subjected to beneficial compressive stresses through treatments such as spraying or other treatments, the heating temperature should not exceed 120℃. Fl.4 Steel parts with tensile strength greater than 1400N·nirn GB/E113761997
Steel parts with tensile strength greater than 1400N, mm-1 The heat treatment temperature should not be lower than 200℃, and the humidity should be as high as possible, but it should be lower than the tempering and aging temperature, and it should not cause any tempering cell, the temperature and time table F, 1. Cool naturally in the air after treatment. However, for workpieces that have been annealed and whose hardening zone is not hardened, only heat treatment below 130°C can be performed. Too high a temperature will lead to a too large reduction in the limit of the hardened zone. The degree of treatment and the degree of treatment are too high. The above method is applicable to all workpieces except those that cannot be shot peened or pressed by hand to introduce beneficial compressive stress. It is recommended that workpieces that are to be introduced with compressive stress should first be heat treated to eliminate the stress. The workpiece cannot be heat treated again if the stress is not eliminated in advance. For workpieces that have introduced compressive stress, heat treatment to reduce stress cannot be carried out. For workpieces that have introduced positive stress, heat treatment should be carried out in the range of 20C ~ 230C according to the above specifications. In addition, the workpieces that have been treated or steam-treated can be heat treated below 230C. F2 Measure shear strength after phosphating
￥2.1 Deep cold-processed steel parts
Deeply cold-processed steel parts or parts with tensile strength of 1 price <·mm\ or more should be heat treated immediately after phosphating, washing and drying, that is, the heat treatment should be carried out before subsequent treatment. The heat treatment process is shown in Table 2. Heat treatment process for eliminating hydrogen after oxidization
tensile strength spot
ico~ suu
Note: the treatment process in the table is for reference only,
heat treatment process
: 133.-201h
<15]--2u) C.2+ h
: 15120) (: 6 1:
Note 1, when the temperature is increased, the film may be peeled off, and the corrosion protection may be reduced. The low heat treatment process can be selected. Generally speaking, the heat treatment temperature should be longer than 15. The heat treatment temperature should not exceed 170℃F2.2 Table F2.2 Steel parts
After carbonization, induction heat treatment and grinding, the parts treated according to the conditions of Table F2 will produce adverse effects. Therefore, the heat treatment should be carried out at a lower humidity, such as 130~1 (treatment below 6b. Appendix G
[Appendix with suggestions]
Appearance of various types of phosphorus salt conversion films
General appearance of various types of phosphorus salt conversion films (film texture, color The size of the phosphate conversion film should be uniform, without stains, missing areas, scratches, or residual color. The color hue difference between the same part and the different parts cannot be the reason for rejection. Slight changes in the appearance of the phosphate film caused by certain reasons, such as differences in the substrate surface or the parts connected to the hanger during the decomposition process, are common and generally do not indicate a significant change in its performance. The method of observation of the product is to take or take a lens greater than F, not more than 6 times the size of the product. 11376-1997
Common appearance of phosphate station chemical membrane
Light color natural color Feaplh early
Washed natural color sheep natural donkey color
The membrane quality on the single sequence is (.1
hg·- when dried, it is iridescent
g·Ye Haoying
(recorded by Tipo)
Determination of corrosion resistance of phosphate film
H1 Determination of corrosion resistance of phosphate film without post-treatment or organic coating shall be tested according to the procedure of 3/T10125. Relevant properties of the product shall be tested according to the procedure of 3/T10125, product state
Visible product properties
Difficult to detect product texture:
Uniformity of the brain
Film and hook, light you enter.
No point, no ion product
Just handprint
Unsafe product
The workpiece or sample station that has been properly treated, in the salt test, the shortest exposure time for the first appearance of the ion product is shown in Table H1, Table H1 The shortest avoidance time required for the first corrosion of the magnetized iron-based film without post-treatment
Limited body number
Unit: amount of film, m
Product package service
H2 Corrosion resistance obtained by post-treatment of phosphating
H2-1 Principle
Transformation system to chemical
Manganese system phosphating film
Fast system two-chemical film
After appropriate additional corrosion treatment, the phosphating salt test method (NSS test) see Figure B/T1C25. This method can be used to evaluate the independent system composed of chemical film and anti-rust, etc., or to carry out a light test on a medium of a certain specification without full rust removal.
2.2 Post-treatment
H2.2-1 Special treatment
When the phosphating parts are immersed in the rust medium, the operating procedures of the product should be followed. To ensure that the semi-solid or waxy film layer formed on the phosphating surface is continuous and there is no air pool.
The phosphating specimen after post-treatment should be hung on a plastic hanger for 24 hours at 23°C ± 5°C. The space should be dust-free, non-ventilated, and the relative humidity should not exceed 65% to remove most of the oil and avoid incubation. H2.2.2 Comparative test
The phosphating specimen after T treatment (1M0C-120°C, then naturally cooled to room temperature) should be hung on a plastic hanger and vertically placed in the post-treatment oiling chamber. The temperature condition is 25°C ± 2(.1min. During the oiling process, gently shake the sample in the air. After 30s, slowly lift the sample from the air to avoid the formation of discontinuous films or bubbles. The treated sample should be hung for 24 hours at 23°C ± 3°C. The relative humidity should not exceed 65°C. H2.3 Procedure
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