Some standard content:
Tipc 621.3 : 001. 4
National Standard of the People's Republic of China
GB/T 2900.4--94Www.bzxZ.net
Electrical Terminology
Electrical Alloy
Electrotechnical TcrminologySpecial alloys for electrical equlpment1994-05-19Published
National Technical Supervision Bureau
1995-05-01Implementation
Complete QuestionMemory and Applicable Application
2Reference Standards
3. 1. Terminology 3.2 Material manufacturing and related specifications 3.3 Electric unit type 4 Heat treatment 4.1 Material components 4.2 Performance and usage characteristics 4.8 Heat treatment 5 Electric heating alloy 5. Materials and components 2. Properties 6 Heating alloys Material products Performance and certification 7 Electric supply concept Material components 7. 2 Electrical properties +---
7.3 Specifications
S Thermocouple alloys.
8.1 Materials and components-
8.2 Thermoelectric properties
8.3 Source measurement.
Micromagnetism of magnetic particles. Order and structure. Classification of materials.
3.2 Broken order and structure
9.3 Virtual properties of materials.
1C Macroscopic transmittance of magnetic materials. Static technology of spotting and bulk material macroscopic properties
11.2 Static technology of magnetization and magnetization state
1 Magnetic generation 17.1 Effect of dynamic magnetization on time
1.2 Description of conductivity
2 Variation and subsequent materials, circuits and applications
12.1 Magnets and dense materials
12.2 Acid circuits and leather
13 Note
13.1 Magnetic physics and technology
Specifications
Index
Text
National Standards of the People's Republic of China
Electrical terms
Electrical alloys
Flecirntechnical termlnologySpecial alloyh For elertricat equipmentmeulGH/T2900.494
Generate #G2900.·S6
Sub-standard zero photo drawing T Committee 1E:59 (441>Switch equipment, control equipment and circuit breakers 3, JF50 (40) Application of electric heating 3.115-5090 (901A Magnetism with 22 donations of metallurgical terminology 3,
1 Subject content and applicability
This standard defines contact·thermal alloy net, electrical alloys, conductive alloys, resistance alloys, thermoelectric alloys and magnetic materials for special electrical structures.
Non-standard application of dry contact, thermal metal, electric heating alloy, conductive alloy, resistance alloy, thermal dielectric and successive materials and other product standards, editing and translation of professional manuals, teaching materials, professional books and periodicals such as foreign trade, international technical exchanges, etc. 2 Reference standards
GH/T 290.1-92
Electrical terminology
(/2909-18-92 Electrical terminology Low voltage substation
GB2900.383 Electrical terminology Thermal equipment 282-88 Thermal engineering terms and definitions in the field of thermal engineering GE283-88
Physical properties Physical definitions in the field of thermal engineering Compensation wire and compensation wire alloy wire G76987
Armored thermal electric drive materials Test trend square tooth
B598586
Method for measuring the number of prenatal bands of hot and cold double metal diseases
3.1 Technique
3.1.1 Contact
Contact parts in electrical appliances. When they are in contact, the circuit is connected, and the operation is disconnected and closed due to relative movement; or the circuit is maintained by the movement or the movement. [Word heart melting head: melting point
3.1.2 Main sleep head maircontact||t t||The contact in the machine is connected to the bird station, in the same position of the load-bearing circuit, 3.3 The contact arringconteel
can be designed as a separate contact to protect the load-bearing workstation from electric delay.
3.1. Auxiliary uiliarycor.ta
The auxiliary contact in the mechanical and electrical auxiliary circuit can be operated simultaneously with the main circuit. National Technical supervision required 1994-D5-19 approved 1995-05C1 implementation
3.1.5 Effective contact sidingcentact
GB/T2900.4-94
A kind of contact that moves relative to each other in the direction of the normal line of the contact surface. 3.1.6 Butt contact bucrntt
A kind of contact that moves relative to each other in the direction of the normal line of the contact surface. 3.1.7 Rolling contact: a kind of contact that moves one contact to another contact in the same direction. 3.1B Kinetic contact mogcort
A contact that performs mechanical movement in a mechanical switch. 3.1.9 Mogcort nnar:t
Contacts in a switch that are in a state of being in contact with each other. 3.1.10 Asymmetrical contacts Asymmetrical contacts are contacts that are made of different materials.
3-111 Asymmetrical contacts Asymmetrical contacts are contacts made of different materials. 3112 Composite contacts Compa
Contacts made of two or more materials that are unequal or have very small degrees of each other and of metal mesh and metal wind, such as composite contacts, composite contacts, cladding ...
3.1.13.1 Working lay
The layer of metal that is used to make electrical contact in a cavity. 3.1.13 2
Base layer
The layer that plays a role in a composite connector. 3.1.13.3 Intermediate layer
The transition layer in a composite connector,
3.1.14 Working surface contact
The contact surface that makes electrical contact.
3.15 Contact element
The element that connects the contact to the fusion bridge, the conductive terminal, the yellow sheet, etc. 3.1.15.1 Integral connector
The electrical contact element that connects the fusion contact and the conductive terminal. Self-supporting contact
3. 1. 15. 2
It has elasticity and does not require external contact parts. Wide-piece contact springccntact
3. 1- 5. 9
I have contact or contact function. Conductive element 3.2 Material manufacturing and related products
3.2. Pre-alloyed powder is first alloyed and then made into the final product.
3.2.2 Solid state diffusion soid state diffusion The process of atomic migration of a substance in a solid substance due to the concentration or chemical potential of the substance. 3.2.3 Pre-sintering skeletons are a process of sintering a porous skeleton into a dense product by sintering a commercially available alloy at a temperature of 100°C through a capillary blasting machine. 3.2.5.1. Infiltration by wet lay: The metal powder is pressed and pre-sintered into a porous skeleton metal part and then infiltrated into a liquid metal with a lower melting point than the skeleton material. The alloy or alloy material with a lower melting point than the skeleton material is selectively melted on or under the porous skeleton body that has been pre-sintered or unfired after the metal powder is prepared. The alloy is heated in an oxygen-containing ammonia to selectively oxidize the metal and form compounds in the matrix. This process requires a one-sided oxidation reaction. 3.2.6.2 When the alloy is subjected to internal oxidation treatment, there are two main processes for oxidation treatment: 3-2.8 Ion injection: the process of injecting the alloy particles into the surface of the alloy. 3-2.9 Decarbonization: the process of subjecting the silver-containing alloy product to heat treatment in oxygen-containing atmosphere to accelerate the burning of the oxide layer and form a "weldable layer". 3.2.10 Heat treatment: the process of separating the batches of composite molten metal with a molten layer by heat treatment. Due to the effects of oxidation, the material can be separated from each batch. 3-2.11 Pressing test: 1t
Apply pressure in the parallel direction of the multi-layer contact joint to the size specified by the contact pressure rate, and the size of the joint is determined by the manufacturer.
Oxidedepletiongonc3. 2. 12
The area of the oxide concentration formed by the internal oxidation method.3.2-13 Thermal test piece 1liernkslabitityContacts can maintain the same size at the specified temperature, without cracks, blistering and low melting point metal impact.
3.2.14 Inrustc
The ability of the contact material to resist the loss of electrical contact caused by mechanical damage and chemical corrosion. 3.2.15 Loss measurment of crosm length test Loss measurement ... 3.2-20 Contact life elec- tially durable: 1y The number of load operations that a switchgear can sustain without repair or replacement under certain conditions. 3.2.21 The current that is reduced to zero before the arc is fully extinguished. 3.222
Ignition time
The interval from the start of the arc to the complete extinguishing of the arc. 3.3 Electrical contact resistance
3.31 Electrical contact resistance
The state of conduction achieved by the contact between the connecting elements. 3.3-2 Striericr.resistenca The current that flows through the contact, resulting from the rapid contraction of the line, resulting in a short circuit. 3.3.3 Membrane resistance lnr
The current generated by the contact membrane.
3.3.4 Coaaciresistunce is the resistance generated at the contact point when the electric current passes through the melting head. It is the sum of the contraction self-limitation and the membrane self-limitation. 3.3.52-The point-l
touch means the point where the electric current is realized. R, Hnlm number at this electric point is a net, and half is called fire. 3-3.6 Thermal power industry aorlearc
The electric drive that occurs when the distance between the contacts is greater than a certain critical value, which leads to the loss of the electrode material, 3.3.8 Material transfer material transferfcn The phenomenon that part of the sealing agent of one side of the head migrates to the other side due to the influence of certain discharge and Joule heat on the contact surface. 3.3.9 Bridge material transfer briclgr malerial ruasfet contact separation, smoke melting metal is asymmetrically disconnected, thereby increasing the distance between the contacts and reducing the material transfer on one side,
3.3.10 Needle transfer material transfer receivematrrial ansfes The material transfer of the deposited material with a small diameter and a long length on the contact surface. 3.3.12 Contact bounce
Contact jitter caused by external vibration, impact, etc. 3.3.13 (Electrical activation) Caused by contamination on the contact surface, burning at a low normal starting voltage, or continuous burning at a current lower than the positive starting voltage, and the phenomenon of the change and the simultaneous occurrence of the clock. 3.3.14 Filahreaktiowrt
The voltage applied to the contact reaches a certain value, causing the film on the surface of the melt to be struck, and the contact current drops sharply. 3.3.15 Friction polymerization The phenomenon that the organic compounds released on the surface of the contact that are in motion are polymerized into high molecular compounds 4
CB/F 2906.4--9
336 Ground canaeletical ersa
Melt failure caused by metal bridge, electric shock and spark discharge during the operation of the melting head due to the effect of the gap between the single heads and the electric current.
3.3-17 Velvet wear n:2r w
adhesion 1 work in the grain library to offer the head of the five selection, fat and other mechanical movement of the contact group loss, 33.18 (air head eat iatezloxk
with the old head system damage, the deformation caused by the transfer, the control clock training machine slightly abnormal, resulting in the phenomenon that the contact cannot be disconnected 3.3.15 ain
the head touches and causes adhesion, resulting in the phenomenon that the single head cannot be disconnected normally. 3.3.20 welding
due to arc discharge and the light of the ear heat. Make the skin head contact surface oxidized, avoid knots, resulting in the phenomenon that the single head cannot be disconnected normally. Training good static training explosion dynamic medium.
3.3.20.1 static class etala:weicling
after the new real arrangement, the mountain ten points of heat inside the action of the serious increase. 3.3.20.2 dynamic cover dymanice 3.3.21 Cold welding
The contact is closed and replaced by the metal atoms. The contact is not in the correct state. 3.322 Softening voltage When the temperature of the electric contact reaches the higher temperature, the electric contact will be softened. 3.3.23 Softening voltage When the temperature of the electric contact reaches the lower temperature, the electric contact will be softened. 3.3.24 Small starting current niniumarngillig
The electric current will not be generated even if the current is large. 3.3.25 Small starting current mnimunarcingcurre The electric current will not be generated even if the current is large. When this current value is reached, the voltage will not exceed the limit. 3.3.26 Reignition || tt || The contacts are disconnected, and the current is equal to the current of the mechanical switch. || tt || 3.3.27 In the event of a fire interruption, the current may be interrupted for a few weeks or longer after the current is lifted.
Then the term "re-entry"
4 Thermal bimetallic
4.1 Materials and components
4.1.1 Thermal performance metal nermostmetallic: erulhirerta is a kind of metal with different thermal conductivity and thermal conductivity. It is made of natural alloys and has different thermal conductivity. The temperature is different from that of other metals.
High-performance device metal
4..2 (hot-dip galvanized steel) component layer is made of metal and alloy layers of hot-dip galvanized steel, 4.1.3 Flat screw parts spiialc:1
CB/r2900.4-94
Thermal profiled strips are wound into some shapes (micro-screws): 4.1.4 Direct-explosion component heical rail
Thermal profiled strips are made of the same metal and alloy layers (or rate tubes). 4.1-5 Disk
Mountain discharge effect enterprise belongs to the blood engineering component with central convex and decision-making, when the tracking is installed in the specified upper and lower rubber changes, the base convex and the alternating action occurs.
4.2 Rotten difference and use characteristics
4.2.1 Curvature Hexisicy
Unit cover degree of thermal gold full sample. When the unit temperature changes, its longitudinal center line changes by the rate ratio. Use the flow meter, the unit name is degree, the unit is.
Source curvature, "
——Thickness of hot metal sample mm:
…Temperature of hot metal sample after change, t-t:
R, R—radius of curvature of its longitudinal center line at L. m4-2.2 Shear curve specific: iherma! ceflectior. The direct heat discussion gold is calculated according to the half rate of change of unit thickness per unit change of sample. The unit is per length, and the symbol for single test is -!.
Where K---ratio of curvature, C
Thickness of hot metal sample m
Screen size of hot metal sample when flat, center! t
Bimetal sample when empty,
Radius of curvature when hot metal thickness test is equal to curvature mm
4.2.3 Standard displacement value uinalvale fpkxiti:thrtrmallfleetion The nominal bending value within the specified range of the benefit, Note: From the component material thermal film number with humidity, the relative bending of the thermal bimetallic film is more and more along a product line with the increase of the temperature, and the limit range of the bending must be specified. 4.2.4 Bending coefficient caefficien:oi deflection The change in the end of the thermal bimetallic strip fixed at one end, the unit thickness, the length of the disc position when the width changes by 1. Calculate the formula. The unit name is the unit card center per degree, -x8
bending coefficient, C1
thermal bimetallic film serial degree, mt:
GE/T 2900.4—94
Thermal bimetallic strip measures its length, rm
Thermal bimetallic strip finds the degree tn:
Thermal bimetallic strip’s length at temperature t, mt:
Thermal bimetallic strip’s initial measurement of toughness, : The final adjustment of the potential effect of the metal strip, 4.2.5 Coefficient of sensitivity The coefficient of sensitivily is sufficient to make the thermal efficiency of the whole layer. The thermal expansion coefficient between the elements is conditional. It is installed on the special device. When the temperature changes north, the degree of relaxation before the first energy release is measured. The value is calculated according to the following formula: The unit name is each area, the unit load number is yc.
Where:
potential induction system, Y;
inspection angle, (\)
.--sample area temperature.
--let the scanning unit length, mm:
270 -L+(7,)
The difference between the final temperature of the sample and the initial temperature, center, 4.2.6 Thermal deflection rete The rate of rotation of the angle of rotation to temperature change is used to determine the sensitivity of the shape of the element, and is expressed as follows; the unit name is angle per day, and the unit number is ().
Wu Zhong: A deflection, (℃
, ... are the multiple positions of temperature t: thti
Thermal double gold mesh) elastic modulusDfelastiityIn the elasticity of the material, the ratio of the stress to the corresponding strain. The elastic modulus of the hot-dip galvanometer is calculated by shifting the terms of the formula under mechanical load. The unit is non-Pa scal or per cubic meter, and the unit symbol is MP: or N/umt.
Where: E--non-modulus, MPa;
P-characteristic modulus, N:
1Standard length, inmt
.Density, m
.Specimen width, m.
6--Specimen thickness, mm:
4.2.8Mechanical speed, mechl
The ratio of torque to angular displacement, used to measure the stiffness of the basic component. The unit is per degree (degrees), the unit is for the actual height of the thermally efficient metal sheet compared with the actual height calculated by the bending, and the deviation does not exceed the relevant temperature range. 4.2.70 The temperature range permitredseulmerararuang Thermocouple bimetallic strips are within the temperature range within which their performance remains unchanged. 4.2.11 Filling point force permitblearess7
GB/T2900-4—9
Within the range of the specified temperature, it is allowed to add mechanical force to the thermal bimetallic strips, so that the sum of the potential force and the mechanical stress does not exceed its variable forging,
Single name is square meter, the unit is Ma/craascurveture
The height of the thermal bimetallic strip to the plane within the entire width range under the specified temperature is measured by the chord height. Unit name is meter. Unit symbol is mm.
4.2.13 The curvature of the heat transfer sheet or belt group is the maximum required distance between the surface of the heat transfer sheet and the flat surface at the specified temperature. Unit name is meter. Unit symbol is mm. 4-3 Heat transfer
4.3.1 (Heat transfer sheet) The heat transfer sheet should be processed to eliminate the stress after processing and maintain the actual performance point. 5 Electric heating elements
5.7 Materials and elements
5.11 Electric heating alloys used to make electric heating elements,
5.1.2 Heating elements
Heating conductors and devices composed of heating conductors and their accessories, which may be detachable or fixed in form, 5-1.3 Ribbon element Resistor element with a rectangular carrier surface, Spiral element Helical element[
Heating element made of non-ferrous metal or other materials. 5.1.6 Electrothermal radiator is a tubular radiator made of heat-resistant materials and a heating element inside. The tube is not larger than 20m. It is made of heat-resistant materials and is installed in the heating element. It is mainly used to temporarily seal the furnace. The outer diameter is generally above 100mm. The radiator is made of heat-resistant materials and a thin wire and a refractory wire. 5-2 Energy
52 Surface temperatureparaa
The surface temperature of the heating element measured by an optical thermometer. The unit name is degree Celsius, and the unit symbol is K: K: GB, T 2900. 5.2.2 True temperature true temperature The absolute temperature is calculated from the total rate of emission (total) and the apparent temperature (T) expressed in absolute terms using the following formula. The unit name is K: K: GB, T 2900.4—94
E, ~ The ratio of the energy radiated by an object at a base wavelength to the accumulated energy radiated by the object, C—Wien-planek radiation measurement, the second constant: effective fatigue length, m
5-2.3 Agricultural recommendation surlulod
The power rate of the transmission unit table again:
The unit name is watt per square meter, and the unit is /cm5.2.4 degrees-teracrstura-esitancecuve The maximum use bias voltage reverse step rate of the room silver alloy, the resistance curve drawn with the room resistance as the base point.
5.2.5 Fast connection (life value) arlel tesl ie (ife) Under the test condition, the cumulative time of the heat cycle that the sample is subjected to after periodic fast power on, power off, and direct burning is marked. The unit name is hour, and the unit symbol is five. 6 Conductive metal
5-Materials and products
rnuallis candurluc
6. 1. 1 Metal conductor
Metallic products used for electrical components: 6.-2 Bimetallic conductor A bimetallic conductor is a multilayer conductive product composed of two or more metal layers, in a state of atomic bonding. 6-1.3 Digger-strengthenedconductivematerial--a conductive material composed of a metal insoluble in water and a metal in a matrix phase that is dispersed in the matrix phase.
6.1.4 Voltage point electrode resistance arc sap: walzingelerirols resistance welding machine will directly apply current and positive force to the welded part, 6-1.5 Welding wheel welding wheel bianks month on the hard disk of the object.
6.2 Energy and test
6.21 Single length resistance resistanceohceperuritlength The resistance value per unit length of the conductor under the condition of temperature: calculated by the following formula. The unit name is resistance per meter, and the unit symbol is /-, (
where: R,) - reference temperature (unit resistance per unit length / mR (-· resistance of the test specimen at both ends of the test length at the reference temperature.: - reference limit, specimen length, m
6.2.2 Volumetric resistance of a single-unit conductor is calculated using the following formula. The unit name is ohm-meter, and the unit symbol is ·m,
where: on) - volumetric resistance at reference temperature, ·m; XR(r.)
- at reference temperature, the resistance of the specimen at both ends of the test length; R(.)
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