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How to find the defective product 2011-6-117: 28 Questioner: 5298273 13 | Number of visits: 2059.
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2011-6-2319: 55 wonderful answer We have certain rules when looking for defective products. Let me tell you something.
When looking for defective products in three projects, there is one on each side of the balance. If it is balanced, it is the remaining one. If it is not balanced, it only takes 1 time to find out the defective products.
Nine is divided into three parts. Three, three, three Find it. It takes twice. . .
And so on,,,
The last rule is
2~3 times; Three times three equals 9, 4~9 is 1 plus 1, twice; 10~27 for 3 times; 27 times 3 equals 8 1, 3 plus 1, 4 times. . . If you don't understand, I will explain it to you. Agree 33| Comment
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Other answers ***6 items 2011-6-117: 29 Jisheng 98 | Level 2.
What about the sampling plan and questioning methods? Answer and I'll send it to you.
Is it a standard question in America? Answer the application of MIL-STD- 105D sampling scheme.
1. Purpose: To make our company have a correct understanding of MIL-STD- 105D sampling scheme, and then effectively use this form of sampling scheme to inspect materials and finished products.
2. Scope of application: All occasions where MIL-STD- 105D sampling is used.
3. Description:
3. 1 First of all, it is necessary to clarify the criteria for judging shortcomings.
3.2 decide AQL:
3.2. 1 AQL means "acceptable quality level".
3.2.2 When there are more than two inspection items, different AQL values can be specified.
3.3 Determine the inspection level.
3.3. 1 The inspection standard is:
3.3. 1. 1 General inspection grade: Grade I, II and III.
3.3. 1.2 Special inspection level: divided into S- 1, S-2, S-3 and S-4.
3.4 Determine the size of the inspection lot: as far as possible, group products of the same nature or products manufactured at the same time under the same conditions to form an inspection lot.
3.5 Find samples to replace words:
Find out the English letters of the intersection column of the batch and the selected inspection level from the sample substitution words, which is the sample substitution words.
3.6 Decide the sampling form: decide whether to adopt primary sampling inspection, secondary sampling inspection or multiple sampling inspection.
3.6. 1 Single sampling inspection refers to a sampling inspection to determine whether to accept or not.
3.6.2 Double or multiple sampling inspection means that a second or multiple sampling inspection may be required according to the first sampling result before deciding whether to accept or not.
3.7 Determine the rigor of inspection:
3.7. 1 Normal inspection is generally adopted for initial inspection.
3.8 Find out the number of acceptance (Ac) and rejection (Re):
3.8. 1 Find out the applicable sampling table according to the sampling form and inspection strictness. Various sampling tables include:
3.8. 1. 1 single sampling scheme for normal test (Table 2)
3.8. 1.2 Strict inspection of single sampling scheme (Table 3)
3.8. 1.3 Relaxation test of single sampling scheme (Table 4)
3.8.2 Take the single sampling scheme and normal test as examples, and search according to the following steps:
3.8.2. 1 Find out the sampling table of normal inspection (single inspection).
3.8.2.2 finds out the row of sample substitution words in the sampling table of normal test (single test).
3.8.2.3 found AQL column in the sampling table of routine inspection (single inspection).
3.8.2.4 finds the columns where the rows and columns intersect, namely, Ac number and Re number.
3.9 If the number of defects is equal to or less than Ac number, it is judged as qualified; if it is equal to or greater than Re number, it is judged as unqualified.
3. 10 If the AQLs in the defect classification are different, any AQL shall be rejected and the batch shall be rejected. Agree with 0| Comment 2011-6-117: 34 Jiangxi Teacher Xie | Level 1
Remember the samples and start picking out the defective products. Agree with 0| Comment 2011-6-1121:23 Wu Wu Hao | Level 1.
2~3 times; 4~9 times; 10~27 is a cube ... n times ~3 to the power of n, for example, 6 times to 3 times 6 times. Agree with 0| Comment 20 12-4- 12 20:42 Enthusiastic users
There are certain rules when we look for defective products. Let me tell you something about it.
When looking for defective products in three projects, there is one on each side of the balance. If it is balanced, it is the remaining one. If it is not balanced, it only takes 1 time to find out the defective products.
Nine is divided into three parts. Three, three, three Find it. It takes twice. . .
And so on,,,
The last rule is
2~3 times; Three times three equals 9, 4~9 is 1 plus 1, twice; 10~27 for 3 times; 27 times 3 equals 8 1, 3 plus 1, 4 times. . . If you don't understand, I will explain it to you. Agree with 0| Comment 2012-5-319: 39a30391426 | Level II.
There are certain rules when we look for defective products. Let me tell you something about it.
When looking for defective products in three projects, there is one on each side of the balance. If it is balanced, it is the remaining one. If it is not balanced, it only takes 1 time to find out the defective products.
Nine is divided into three parts. Three, three, three Find it. It takes twice. . .
And so on,,,
The last rule is
2~3 times; Three times three equals 9, 4~9 is 1 plus 1, twice; 10~27 for 3 times; 27 times 3 equals 8 1, 3 plus 1, 4 times. . . If you don't understand, I'll explain it to you again. 0| Comment 2012-5-1518: 28 Enthusiastic users.
There are certain rules when we look for defective products. Let me tell you something about it.
When looking for defective products in three projects, there is one on each side of the balance. If it is balanced, it is the remaining one. If it is not balanced, it only takes 1 time to find out the defective products.
Nine is divided into three parts. Three, three, three Find it. It takes twice. . .
And so on,,,
The last rule is
2~3 times; Three times three equals 9, 4~9 is 1 plus 1, twice; 10~27 for 3 times; 27 times 3 equals 8 1, 3 plus 1, 4 times. . . If you don't understand, I will explain it to you.