CN105004595A - Hydrogen storage alloy sampling and sample preparing method and system - Google Patents
Hydrogen storage alloy sampling and sample preparing method and system Download PDFInfo
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- CN105004595A CN105004595A CN201510474059.9A CN201510474059A CN105004595A CN 105004595 A CN105004595 A CN 105004595A CN 201510474059 A CN201510474059 A CN 201510474059A CN 105004595 A CN105004595 A CN 105004595A
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Abstract
The invention provides a hydrogen storage alloy sampling and sample preparing method. The hydrogen storage alloy sampling and sample preparing method is characterized by comprising the following steps that a plurality of small sample blocks with the outer skin being removed are randomly drawn and placed in a smashing device; the smashing device is sealed, and vacuumizing is conducted; after inert gas is fed into the smashing device and the vacuum degree is lowered, the samples are ground; the gas is fed into the smashing device until vacuum disappears; the ground samples are screened, and the prepared samples are obtained. The sampling process is normative, representative and uniform. In the sampling process, harmful substance pollution and sample oxidation are avoided under the protection of inert gases, the accuracy and reliability of tested samples are guaranteed, the accuracy of quality of products is effectively improved, and orderly and effective production is achieved.
Description
Technical field
The present invention relates to the sampling of a kind of hydrogen bearing alloy, the sampling of method and system, particularly hydrogen bearing alloy of sample preparation and the method for vacuum gas filling grinding sample preparation.
Background technology
In prior art, sampling, the sample preparation of hydrogen bearing alloy are more chaotic, do not have unified step and method, and on the one hand, when sampling often because the randomness of sampling personnel, lack of standard, causes the result difference measured; On the other hand, the method for existing sample preparation grinding alloy be exactly unprotect gas mortar and pulverize sampling machine sample preparation, due to the oxidation of hydrogen storing alloy powder easy firing, unprotect gas condition under grinding can be oxidized, affect testing result, causes judging by accident.
At present, American-European countries's battery industry requires high to the quality safety of battery and environmental-protecting performance, requires very harshness to the objectionable impurities impurity component (as lead, copper, iron) of hydrogen bearing alloy, even must reach thousand points or ten thousand/more than.And domestic hydrogen bearing alloy producer inherently produces the hydrogen bearing alloy (containing the element such as copper or iron) of high-end hydrogen bearing alloy and low side, therefore, in production run and get the infection how distinguished in sample preparation and avoid objectionable impurities, to impurity content how to control higher requirement is proposed to product in time and accuracy make detecting and judge.
Prior art defines a kind of technology prejudice, and the sampling of hydrogen bearing alloy, sample preparation operate according to being accustomed to repeating with following the beaten track in the past, and never people goes to consider how to go to improve, how can do better.
Summary of the invention
An object of the present invention is to provide a kind of sampling of hydrogen bearing alloy, method for making sample, it can the sampling method of hydrogen bearing alloy of representative, the homogeneity of specification, make made sample not contaminated, be not oxidized, ensure accuracy, the reliability of test sample, the judgement accuracy of effectively improving the quality of products, realizes effective in order production.
Another object of the present invention is to provide a kind of sampling and sample-preparing system of hydrogen bearing alloy, it specification can have the sampling method of hydrogen bearing alloy, make made sample not contaminated, be not oxidized, ensure accuracy, the reliability of test sample, the judgement accuracy of improving the quality of products, to realize effective in order production.
For this reason, according to an aspect of the present invention, provide a kind of sampling of hydrogen bearing alloy, method for making sample, concrete steps are as follows:
1, randomly draw the hydrogen bearing alloy several piece of certain batch, remove exocuticle, every block gets a fritter as sample (particularly, available stainless steel hammer difference hammering each block of alloy gently, remove its exocuticle, every block gets a soya bean size block alloy, loads in sampling bag and carries out mark).
2, sample alloy is placed in lapping device, sealing is evacuated to more than-0.08MPa (such as-0.08 to-0.1Mpa), preferably, described lapping device comprises grinding pot body, grinding ring and grinding hammer, grinding pot body, grinding ring and grinding hammer are collectively referred to as abrasive alms bowl, and sample alloy is placed in the middle of grinding ring and grinding hammer.
3, filling with inert gas to-0.04MPa, grinds sample inside, controls to pulverize sampling machine milling time (general 1-2 second) as required.
4, inflatable body goes out sample: inflatable body (a small amount of inert gas or air) is to 0MPa, open lapping device, ground sample is poured in screen cloth, carry out process of sieving, select screen cloth to sieve according to technological requirement, preferably adopt the multilayer screen cloth stacked successively from top to bottom.
5, the sample collection below 170-300 order or 170 orders is poured in sample sack well.
Before each sample preparation, screen cloth and lapping device are cleaned out.Particularly, available hairbrush cleans down screen cloth, with blade, grinding pot body, grinding ring and grinding hammer are scraped clean, use alcohol cotton wiped clean again (if desired, can according to the micro-class requirement of hydrogen bearing alloy objectionable impurities impurity, select two covers or the above abrasive alms bowl of two covers, distinguish sample preparation, prevention and control objectionable impurities impurity).
According to another aspect of the present invention, provide a kind of sampling and sample-preparing system of hydrogen bearing alloy, wherein, sampling system comprises the utensil (as stainless steel hammer) carrying out the hydrogen bearing alloy block of certain batch that randomly draws to remove epidermis process; Sample-preparing system comprises lapping device, vacuum extractor, filling with inert gas device, screen cloth,
Described lapping device comprises grinding pot body, grinding ring and grinding hammer; Grinding pot body, grinding ring and grinding hammer are collectively referred to as abrasive alms bowl, and preferably, lapping device has two covers or the above abrasive alms bowl of two covers, distinguishes sample preparation, prevention and control objectionable impurities impurity.
Preferably, the sample-preparing system of hydrogen bearing alloy of the present invention also comprises the cleaning utensil of cleaning lapping device and screen cloth, comprises hairbrush, blade, alcohol and cotton.
Preferably, described screen cloth preferably adopts by the screen cloth stacked successively from top to bottom.
According to the present invention, sampling process has standardization, representativeness and homogeneity; Sample making course, under the protection of inert gas, avoids objectionable impurities and pollutes and sample autoxidation.Therefore, ensure that accuracy, the reliability of test sample, improve the judgement accuracy of product quality, achieve effective in order production.
Instant invention overcomes prejudice of the prior art, propose the standard operation new paragon of the sampling of hydrogen bearing alloy, sample preparation, and achieve unforeseeable technique effect, ensure that reliability and the accuracy of test result, stop the appearance of substandard product, avoid the heavy economic losses of enterprise, guarantee economic benefit.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the sampling method for making sample of hydrogen bearing alloy according to an embodiment of the invention.
Fig. 2 is the structural representation of the sampling sample-preparing system of hydrogen bearing alloy according to an embodiment of the invention.
Embodiment
Below in conjunction with attached Fig. 1 and 2, specific embodiments of the invention are described in detail, but the invention is not restricted to these specific embodiments.
Embodiment 1:
1, the hydrogen bearing alloy 5-7 fritter of certain batch is randomly drawed;
2, with stainless steel hammer difference hammering each block of alloy gently, remove its exocuticle, every block gets a soya bean size block alloy, loads in sampling bag and carries out mark;
3, before sample preparation, with hairbrush, screen cloth is cleaned down, with blade, grinding pot body 2, grinding ring 3 and grinding hammer 4 are scraped totally, use alcohol cotton wiped clean again (if desired, can according to the micro-class requirement of hydrogen bearing alloy objectionable impurities impurity, select two cover abrasive alms bowls, distinguish sample preparation, prevention and control objectionable impurities impurity);
4, the sample alloy block 1 of sample sack is placed on grinding ring 3 middle with grinding hammer 4, has compressed lid 5, be evacuated to more than-0.08MPa by vacuum extractor 6;
5, by inert gas input media 7 toward filling with inert gas inside grinding pot body 2 to-0.04MPa, control to pulverize sampling machine milling time (general 1-2 second) as required;
6, be inflated to 0MPa again by gas input device 8, uncap 5, ground sample 9 is poured in the screen cloth 10 stacked successively from top to bottom, carry out process (selecting screen cloth to sieve according to technological requirement) of sieving;
7, finally the sample collection below 170 orders is poured in sample sack well.
Embodiment 2:
Different from embodiment 1, the sample collection below 200 orders is poured in sample sack well.
Embodiment 3:
Different from embodiment 1 and 2, the sample collection between 200-300 order is poured in sample sack well.
Randomly draw hydrogen bearing alloy several piece 5-7 block.In order to samples' representativeness.
Lapping device seals and is evacuated to more than-0.08MPa, and such as-0.08 to-0.1Mpa.
In lapping device, filling with inert gas is to-0.04Mpa, can just about-0.04Mpa, but can not be too low too high, ensure that ground sample can not be oxidized and handling safety.
Claims (10)
1. a method for hydrogen bearing alloy sampling sample preparation, is characterized in that, comprise the following steps:
The several fritters randomly drawed are placed in pulverizer through the sample of past exocuticle; This pulverizer is sealed and vacuumizes; Be filled with in pulverizer after inert gas reduces vacuum tightness and sample is ground; Elimination vacuum is inflated to again in pulverizer; Ground sample is sieved, obtains sample preparation.
2. the method for claim 1, is characterized in that, randomly draws hydrogen bearing alloy 5-7 block; This pulverizer is sealed and is evacuated to more than-0.1MPa; Inert gas is filled with to-0.04Mpa in pulverizer; Milling time is 1-2 second; 0MPa is inflated in pulverizer; To ground sample by screen cloth process; And/or the sample below 170-300 order or 170 orders is as sample preparation.
3. hydrogen bearing alloy sampling, a method for making sample, is characterized in that, comprise the following steps:
Randomly draw hydrogen bearing alloy several piece (preferred 5-7 block), carry out exocuticle process, every block gets a fritter as sample alloy block;
Sample alloy block is put into lapping device, makes this lapping device seal and be evacuated to more than-0.1MPa;
In lapping device, filling with inert gas is to-0.04MPa, grinds (preferred 1-2 second) to sample;
Again to inflatable body in lapping device to 0MPa, ground sample is poured in screen cloth, carry out process of sieving;
Collect the sample of below 170-300 order or 170 orders.
4. method as claimed in claim 3, is characterized in that, described in go exocuticle to be treated to stainless steel hammer hammering each block of alloy gently respectively, remove its exocuticle; Described lapping device comprises grinding pot body, grinding ring and grinding hammer, and sample alloy block is placed in the middle of grinding ring and grinding hammer; Sampling machine pulverized by lapping device; And/or described screen cloth is by the multilayer screen cloth stacked successively from top to bottom.
5. method as claimed in claim 3, is characterized in that, also comprises cleaning device operation before sample preparation, screen cloth and lapping device is cleaned out; Before sample preparation, with hairbrush, screen cloth is cleaned down, with blade, grinding pot body, grinding ring and grinding hammer are scraped clean, then use alcohol cotton wiped clean; And/or, select two covers or the above abrasive alms bowl of two covers (grinding pot body, grinding ring and grinding hammer are collectively referred to as abrasive alms bowl) according to the micro-class requirement of hydrogen bearing alloy objectionable impurities impurity, distinguish sample preparation, prevention and control objectionable impurities impurity.
6. a system for hydrogen bearing alloy sampling and sample preparation, it is characterized in that, sample removes exocuticle device, pulverizer, vacuum extractor, inert gas charging device, sieving equipment; Sample goes exocuticle device to be arranged on the upstream of pulverizer; Sieving equipment is arranged on the downstream of pulverizer; Vacuum extractor, inert gas charging device are all communicated with pulverizer.
7. system as claimed in claim 6, it is characterized in that, this pulverizer has controller that vacuum tightness is more than-0.08MPa, controller that controller that inert gas vacuum tightness is-0.04Mpa, milling time are 1-2 second and/or gaseous tension be the controller of 0Mpa; Sieving equipment is at least one deck screen cloth; And/or, the sample preparation controller below 170-300 order or 170 orders.
8. a system for hydrogen bearing alloy sampling and sample preparation, it is characterized in that, sampling system comprises the utensil (as stainless steel hammer) the hydrogen bearing alloy block of certain batch that randomly draws being carried out the process of removal table epidermis; Sample-preparing system comprises lapping device, vacuum extractor, filling with inert gas device and screen cloth.
9. the system as described in claim 6 or 8, is characterized in that, described lapping device comprises abrasive alms bowl, and abrasive alms bowl comprises grinding pot body, grinding ring and grinding hammer (preferably, lapping device has two covers or the above abrasive alms bowl of two covers).
10. the system as described in claim 6 or 8, is characterized in that, the sample-preparing system of described hydrogen bearing alloy also comprises the cleaning utensil (comprising hairbrush, blade, alcohol and cotton) of cleaning lapping device and screen cloth; And/or described screen cloth is by the multilayer screen cloth stacked successively from top to bottom.
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| CN201510474059.9A CN105004595A (en) | 2015-08-05 | 2015-08-05 | Hydrogen storage alloy sampling and sample preparing method and system |
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| CN106493375A (en) * | 2016-11-07 | 2017-03-15 | 攀钢集团攀枝花钢钒有限公司 | The preparation method of vananum determination of oxygen content sample |
| CN110186817A (en) * | 2019-07-11 | 2019-08-30 | 兰州金川科力远电池有限公司 | The test method of hydrogen storing alloy powder pulverization rate |
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Application publication date: 20151028 |