GB/T 4164-2002 Determination of hydrogen-reducible oxygen content in metal powders
Some standard content:
ICS77.1E0
National Standard of the People's Republic of China
GH/T41642002
idf IS0 4491-3:1997
Metallic puwders Determination of lytlrogen-reducible oxygen content2002-04-09 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
2002-10-01 Implementation
G/T 4164—2002
This standard is revised according to G141641094 for metal powders.
The legal oxygen content in Beijing will be? The former: the metal components that can be reduced by oxygen are added to the former. This standard replaces G/T411-1 from the date of implementation. This standard is issued by China Machinery Industry Association. This standard is under the jurisdiction of China Metallurgical Products Standardization Committee. The origin of this standard: Beijing Metallurgical Research Institute. Drafters of the wood standard: Chen
Leqian, Yin Fengshang, Jia Duzhen.
This standard was published in 2004
GB/7:41E4—2002
ISO Foreword
This International Standard 1S4491 (S(44S:-3:.959)) first edition was updated by International Standard (ISO) 4184, 1931), which is based on the test steps for the determination of reducible oxygen in the atmosphere. However, it is difficult to give a valid introduction to the text later, so this part of S4491 is mentioned here.
In addition, the specification has been extended to include the addition of carbon. If any carbon is present in the powder, the carbon will be reduced to hydrogen to produce carbon monoxide or hydrogen. This co-product cannot be determined without testing. The reagent is determined to contain enough water to form a type of reagent. The use of this reagent will compensate for the low internal content. This interference can be eliminated by the following method. The gas produced by the medium is produced by a certain method. The former medium is based on the following method. The conversion reaction occurs when the medium is present. Note: The conversion rate is affected by the error of this method. The analysis of this method can only be done by referring to BS 2481-1:15BS1. "Item. 1 Hong Kong Wei
National Standard of the People's Republic of China
Determination of the content of oxygen that can be reduced by hydrogen in metal powder
Melalir puwders-Determinutinorhydrogen Reduction of metal powders GH/T 41642UU2
idt 150 2491-3:1997
Generation #GB/1:14—1954
154 Part 4 of the specification describes a method for reducing metals containing oxygen (in mass and micron) between .% and 3% by a certain amount. This method is used to produce high-quality alloying, partial alloying and pre-alloying metal powders. It is also applicable to metal-reducing compounds. It is not applicable to powders containing organic binders or organic binders. To extend the wood method, the wood residue can be expanded to contain carbon. S44 should be read together with S076 and S4451.
? Reference Standards
The following references contain the following clauses in the text of this standard. This standard is valid for the version indicated. All standards are subject to revision. The latest version of the following standards should be used to discuss the availability of the following standards. ISC members are in the valid environment. The international standardization book is a general method for the determination of the oxidation state of water by the reduction method described in 150) 297-1: 198 Gold powder: Part 3: General Principle || tt || The sample is dried at low temperature 170F in a heated or regenerated atmosphere. The sample is heated in a pure gas stream. The oxidation state is naturally reacted and the resulting water chain is absorbed by methanol. Titrated with the above-mentioned Levitra reagent, the result is The end point is determined by observing the color change or using the double pole measurement method (equipotential point measurement). For carbon-containing reagents, the resulting magnetic monoxide is converted into magnetic dioxide and isocyanate. During the analysis, the reagent is confirmed by a wheel analysis test. The purity of the reagent is not required for benzene. Evil: The following reagents contain 1% of the following chemical compounds: sulfur dioxide, pyridine and methanol. Please avoid them. Sign out, use a large plate of water
4.1 anhydrous alcohol
4.2 carb: body. Year road exciting equivalent to 1R currency any of the following countries can be used to make the full concentration of the ten-dollar · Feda reagent: full concentration of 20~37% water iodine to 2.1
5 people do not make the qualified needle of the people's Republic of China and the State Administration of Quality Supervision, Inspection and Quarantine?-call-call approved 29021031 implementation
GB/T$164-2062
theoretically containing (mass fraction 5.16% water, equivalent to mass fraction 13.2 oxygen 1. Accurate to 1rg.) according to the method shown in Chapter 7, take 10~2U pure alcohol and change the sodium egg donation to 1, fry as the standard sample must be heated at 1 to release the contained water, then titrate the water grown. Detailed standard see IS.
4.3 Hydrogen: content not exceeding (mass fraction 5% phosphorus not greater than -54.4 Degassing gas degassing hydrogen: oxygen content not exceeding mass fraction) 3.00%, degassing not greater than -54.5 Explosive agent: light non-aluminum silicate, calcium silicate or argon nitrate: 5 only
Note: optional installation methods are shown in Figures 1) and 2. 5.7 Hydrogen source (A) equipped with pressure regulating flow control valve. 5.2 Purifier (B), from the emperor, including a deoxidizer and a desiccant. 6.3 Short gas or hydrogen source C! Equipped with a small regulating flow control valve and meter. 5.4 Gas selection valve ().
5.5 Gas drying equipment (). Including 1 explosive (4.5). 5.6 reduction (F, made of gas sensitive female, pyrotechnics or pyrotechnic materials (dense oxidizing starting): should meet the following technical standards series
" The whole 273: a tube with a length of 40m at one end, and two small quartz sections with a diameter of ~m, lengths of ~3m and 23~340mm respectively as shown in Figure 3: This equipment is inserted into the reduction furnace with an inner diameter of m, length of 1m. There is an air inlet and an air outlet. The two furnaces are not required. ||t t||Purified gas
1 Strong delivery sound (5.5): 1 Original sale (5.02: Heart 7<, 7) 1 plate (6,8); 1. Nickel coal chemical loading tube (5,3): 1 Beijing Tong (5.1. Simple fixed bottle, .11L-full point fixed only (5.2) M pool crown tube (3) Figure 1 for method 1 of the device layout
GR/T4164-2C02
A Oxygen identification B-purification station: starting gas source J-foreign selection E gas parts award one hundred one use parts> one child> two plates one Demi have [one point with pipe · full is box 11--point fixed (12-extinction 5.13) Figure currency for method 2 of the device Distribution method
5.7 Commercial protection can be (:, one of the brother to the standard push sample dehydration, blade one one reduction, use the temperature control system, can make the effective location (5.8) of the source of the poem in the specified temperature range. 5.8 Print (1), the bottom material quality is good to determine the high alumina ring case, and made with a pool light surface, the size of the sample is less than half of the actual size is appropriate, in the example and must be before the question 9 (~1100T of hydrogen compensation considerations for at least 1h. Make the life before storage in a dryer 5.9 Dirty plan conversion full stomach <1) out of the chain slave island tube and with a control system that can maintain 3 special (the sample is strictly tested every year. Dry gas.
510 pass tube, when no need to see the medium conversion installation 59 when the identification is not enough to wait for the gas can not be connected chain mail through 5.11 titration bottle (K), capacity single 200--10uml., equipped with a magnetic environment similar to a certain amount, if the use of the automatic detection end point force method, should also be equipped with two clamp gold electrodes, 5.12 end point verification (I.), for electronic white dynamic inspection of the situation (see Figure 4) 5.13 burette M>, capacity. Scale accurate to 5. Station m use table 1. The current determination of any new desiccant protection width: to prevent moisture in the air
can be collected 5,115.12 and 513 are not in violation of the collection, as long as the requirements of 15> are met: the non-precautionary titration device can be used.
F-also shocked to stop guard
Figure also bed pipe example
6 let the sample
G:B/T4154—2002
The meter can be turned off by the electric group
Figure The circuit diagram of the electric end point of the age determination device (see 7.5.4) will be at the end of the standard state:
Steps
Sub-1 material
Special weight·Recovery can also be calculated by the loss of hydrogen reduction nitrogen deficiency amine test science most in Table 1, the situation is stable to 5.1 ratio:, Table
Core and core are hydrogen reduction sequence has the amount of efficiency.G5.G..
.. ..-2.0
7.2 Test conditions: The specific reduction temperature is shown in Table 3. The uniform reduction time at the following temperature is about 100 n. For the slurry and the powder, the fastest temperature time for complete reduction should be determined by experiment. Alloy source alloy starting temperature: 85G: + 15: 0c12: 136_ 2n: 7.3G: T 164 2CC2
7.3.1 Set the transmitter as shown in Figure 1 or Figure 2, and adjust the temperature to 5.7 according to the group requirements: when the temperature reaches 1, the temperature of the furnace is 5.7, and the temperature of the furnace is 5.7. (a) Release the rate of the furnace. 7.3.2 Carl-type reagent (4.2) flow starts to flow at 15.13 to ensure that there is no water that can change the reagent temperature. Remove the flushing liquid and put it into the pipe. Put the reagent in the lower pipe. 3.3 Put half of the alcohol (4.1) into two bottles (5. !!) and adjust it carefully. Pass it above the air inlet. The electrode should be at the electrode surface with 1) Start the tunnel force according to the alliance, Carl, ten rest reagents to measure until the drop point is visible, in order to neutralize the amount of alcohol, 3.4 If the film is measured at the same time, the whole point is compared with Figure 4:. Turn on the power. Point calibrator (.13: both rise and fall, read the short voltage, verify that the current is over 12.uA - turn off F - turn off S, .3.5 For both political and political battles. Both layers will adjust the airflow to a single less core 1./. through 13mn, use a gas selection valve.4>'s ~ Lai Chengli gas car to adjust the flow rate car 2Lh.
When the mass transport is replaced, the light will be restored to 5.5a) and the original ore will be dragged back to the original tube and cooled to room temperature for 10mim.
.3.6 The gas can be dripped once to the endpoint -
7.3.7 Check the airtightness of the instrument in the blank test state determined in 7.4, and do not stop the ventilation unless the mouth is changed to reduce the gas when the tube is still hot. 7.4 When using a test air type, use a test air type: 5.8) According to the test sequence of the group or the part, the test is carried out in 4 weeks. Note: The test of the test apparatus will be given in 2 weeks. If the test results are not obtained, the test equipment is checked. 7.5 The test is necessary to eliminate the color reaction inside the gas. Two methods are used quickly. The medium needs to be heated to 30 + 10 °C by the medium (5.9). Before changing the medium, open the conversion room: Before measuring the oxygen conversion, make sure that the medium converter is in the through pipe position. Note: The water exchange of the sample can be verified. The three most demarcations can be made after the fire in the corner. The non-solid reagent has no body. 75.1 Method 1: Fully sealed reduction tube www.bzxz.net
Open the reduction tube (:) You have a detailed test period, close the pipeline, flush with a minimum of 10% gas at a flow rate of at least 301.h to remove the air brought by the test group, and allow enough time to drip until the temperature of the tube is visible at the whole point. The end point of the titration is determined by the end point tester in the operation station or the electronic end point tester. The product is adjusted after 7%4. Record the volume of the reagent dripping and the time. Use the gas selection valve to judge, change the gas or adjust the flow rate to 2 = 1.h, and set the sound! The temperature of the test group is maintained at 100%. At the end of the reduction, the same determination method is used as above. Read out the record of the volume increase, and record the time, use gas recovery to read, replace the hydrogen gas flow with nitrogen, pull the tube out of the furnace, and use a machine to cool the tube to the temperature.
7.5.2 Method: Open the original tube and let the furnace temperature be correct. Use ten oxygen-effective tablets to open the reduction supervisor (5.S5). Release the test person, use a stainless steel fishing rod to push the user into the dry area with a gas alarm, etc. Strictly, when the exploration process is completed, use a non-aqueous test gas to eliminate the determination, and then release the gas to maintain the temperature of the reduction. At the end of the reduction process, use the above test gas to determine the volume of the new reagent consumed.
Then change the gas to nitrogen and let it flow into the low-flow area. After 1m, it will be collected in the tube. 7.6 The calculation of the multiplication of the results of the two tests and the mercury are shown in CB/T 4'64—2007
8.1 The amount of reducing material can be expressed as mass fraction (Xing). (1 Let calculate; Te(0aa) = 205n E-- 1)
The volume of the Karl Fee reagent used for the determination of the material is L, which is the mass of the test material, me:
The titer of the Karl Fee reagent is m/8.? The calculation and expression of the test results can be found in the technical source
(Mass content):
on.2*sc.5
9Test report
Please specify the following content
The test report should include the following content:
|》References to this standard:
h) Details required for the identification of test samples:
) Cooling time and temperature:
d) Reaching the original time and degree:
Whether to use touch conversion equipment,
Results obtained 1
) Control operations not specified in the standard,
h) What details can affect the station collection,
The
record of the
record between two times
1 ticket: The absolute value
is used to express the
structure is not effective below6. The blood can be dripped once until the end point -
7.3.7 Check the air tightness of the instrument in the specified blank test state. When the tube is still hot, do not stop the ventilation unless the outlet is changed to reduce the gas. 7.4 When using a blank test method
, use a blank test method: 5.8) Follow the sequence of the test group or the part of the test group to perform the 4 test Note: The test results of the test will be given in 2 weeks. If the test results of the test result are not obtained in time or the test result is not obtained, check the equipment side gas
7.5 Test
There is a need to replace the internal color response. Use two methods quickly. The medium needs to be heated to 30 + 10 °C by the medium (5.9). Before changing the medium, open the conversion room:
Before measuring the oxygen conversion effect: Make sure the medium converter is in the open position. Note: To ensure that the sample is water-free, the sample can be used as the boundary of the three most important demarcations. The non-solid reagent is not contained in the sample. 75.1 Method 1: Completely seal the reduction tube
and open the reduction tube (:) You have a test tube with a detailed test period, close the tube, flush with a minimum of 10% gas at a flow rate of at least 301.h to exclude the air brought by the test group. After a certain time, the test tube can be dripped until the temperature is within the range of 7%. The end point of the titration is determined by the end point tester in the operation station or by the electronic end point tester. Record the volume of the reagent dripping for a short time. Use the gas selection valve to judge the gas flow rate or adjust the gas flow rate to 2 = 1.h, and set the sound! The temperature of the test tube is maintained at 4 °C. At the end of the reduction, the same determination method as above is used. Read out the record of the volume increase, and record the time, use gas recovery to read, replace the hydrogen gas flow with nitrogen, pull the tube out of the furnace, and use a machine to cool the tube to the temperature.
7.5.2 Method: Open the original tube and let the furnace temperature be correct. Use ten oxygen-effective tablets to open the reduction supervisor (5.S5). Release the test person, use a stainless steel fishing rod to push the user into the dry area with a gas alarm, etc. Strictly, when the exploration process is completed, use a non-aqueous test gas to eliminate the determination, and then release the gas to maintain the temperature of the reduction. At the end of the reduction process, use the above test gas to determine the volume of the new reagent consumed.
Then change the gas to nitrogen and let it flow into the low-flow area. After 1m, it will be collected in the tube. 7.6 The calculation of the multiplication of the results of the two tests and the mercury are shown in CB/T 4'64—2007
8.1 The amount of reducing material can be expressed as mass fraction (Xing). (1 Let calculate; Te(0aa) = 205n E-- 1)
The volume of the Karl Fee reagent used for the determination of the material is L, which is the mass of the test material, me:
The titer of the Karl Fee reagent is m/8.? The calculation and expression of the test results can be seen in the following. The technical source can also be found in the following. 2*sc.5
9 Test report
Please specify the following content in the test report
The test report should include the following content:
|》References to this standard:
h) Details required for the identification of test samples:
) Cooling time and temperature:
d) Reaching the original time and degree:
Whether to use touch conversion equipment,
Results obtained 1
) Control operations not specified in the standard,
h) What details can affect the station collection,
The
record of the
record between two times
1 ticket: The absolute value
is used to express the
structure is not effective below6. The blood can be dripped once until the end point -
7.3.7 Check the air tightness of the instrument in the specified blank test state. When the tube is still hot, do not stop the ventilation unless the outlet is changed to reduce the gas. 7.4 When using a blank test method
, use a blank test method: 5.8) Follow the sequence of the test group or the part of the test group to perform the 4 test Note: The test results of the test will be given in 2 weeks. If the test results of the test result are not obtained in time or the test result is not obtained, check the equipment side gas
7.5 Test
There is a need to replace the internal color response. Use two methods quickly. The medium needs to be heated to 30 + 10 °C by the medium (5.9). Before changing the medium, open the conversion room:
Before measuring the oxygen conversion effect: Make sure the medium converter is in the open position. Note: To ensure that the sample is water-free, the sample can be used as the boundary of the three most important demarcations. The non-solid reagent is not contained in the sample. 75.1 Method 1: Completely seal the reduction tube
and open the reduction tube (:) You have a test tube with a detailed test period, close the tube, flush with a minimum of 10% gas at a flow rate of at least 301.h to exclude the air brought by the test group. After a certain time, the test tube can be dripped until the temperature is within the range of 7%. The end point of the titration is determined by the end point tester in the operation station or by the electronic end point tester. Record the volume of the reagent dripping for a short time. Use the gas selection valve to judge the gas flow rate or adjust the gas flow rate to 2 = 1.h, and set the sound! The temperature of the test tube is maintained at 4 °C. At the end of the reduction, the same determination method as above is used. Read out the record of the volume increase, and record the time, use gas recovery to read, replace the hydrogen gas flow with nitrogen, pull the tube out of the furnace, and use a machine to cool the tube to the temperature.
7.5.2 Method: Open the original tube and let the furnace temperature be correct. Use ten oxygen-effective tablets to open the reduction supervisor (5.S5). Release the test person, use a stainless steel fishing rod to push the user into the dry area with a gas alarm, etc. Strictly, when the exploration process is completed, use a non-aqueous test gas to eliminate the determination, and then release the gas to maintain the temperature of the reduction. At the end of the reduction process, use the above test gas to determine the volume of the new reagent consumed.
Then change the gas to nitrogen and let it flow into the low-flow area. After 1m, it will be collected in the tube. 7.6 The calculation of the multiplication of the results of the two tests and the mercury are shown in CB/T 4'64—2007
8.1 The amount of reducing material can be expressed as mass fraction (Xing). (1 Let calculate; Te(0aa) = 205n E-- 1)
The volume of the Karl Fee reagent used for the determination of the material is L, which is the mass of the test material, me:
The titer of the Karl Fee reagent is m/8.? The calculation and expression of the test results can be found in the technical source
(Mass content):
on.2*sc.5
9Test report
Please specify the following content
The test report should include the following content:
|》References to this standard:
h) Details required for the identification of test samples:
) Cooling time and temperature:
d) Reaching the original time and degree:
Whether to use touch conversion equipment,
Results obtained 1
) Control operations not specified in the standard,
h) What details can affect the station collection,
The
record of the
record between two times
1 ticket: The absolute value
is used to express the
structure is not effective below
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