Test Questions (第二篇)

Ⅰ. True-false Questions (是非题）
1.The development of metal cans entered a news stage due to the press forming process.
2.The tin coating is very thinner but is sufficient to protect the base metal.
3.The methods of electrolytic and electroplating have almost same good manufacturing performances.
4.the principal material for can making has not been tinplate until recently.
5.Conventional tinplate resists corrosion not only by the protective layer of tin in its surface,　but also by a catholic reaction.
6.The general types of interior enamels can be used for packing all fruits and other foods.
7.Silver added to Tin or Tin-lead solders will increase their resistance to creep.
8.Because aluminium company has reduced the production costs so to make it competitive with tinplate.
9.Special coatings used in aluminum cans are usually similar to the enamels applied to tinplate containers.
10.The cost of setting up a production line for two-piece cans is much more times as much as for three-piece cans.
11.In the Draw/Redraw(D/RD)process, the gauge of the bottom and side wall of the containers is not the same as the starting gauge.
12.Interior coating for aerosol cans must withstand the effects of propellants as well as products.
13.The collapsible tubes were invented by a painter about one hundred years ago.
14.The collapsible tubes do not accommodate theirself to high-speed automatic filling operation.
15.In fact,　any ductile metal that can be worked cold is suitable for collapsible tubes.
16.The most important fabrication procedure of the collapsible tubes is impact extrusion.
17.The collapsible tubes is not always filled through their bottoms.
18.The steel draws were started from steel barrels that used as a substitute of wooden barrels.
19.Both cold-and hot-rolled steels are used for making drums of which cold rolled ones is sometimes preferred.
20.Some resistances to corrosion of steel drums are provided by phosphatzing treatment that is a chemical method.
21.Steel drums are made in tight-head and open-head,　and the former usually has one small openings.
22.Steel pails are containers for carrying liquid products with handles.
23.The press forming process can be grouped under two broad categories: cold forming and hot forming of which the former is usually used make metal containers.
24.Drawing Number is always dependant on Drawing Factor.
25.According to material bending direction the reverse drawing operation is not often preferred.
26.The operation of D&I changes the thickness of the job wall, however, it is almost kept constant in D&RD.
27.The structure of the double seam is not always fabricated using cold forming process.
28.The double seams are at least formed by two set of press rollers.
29.Aerosols have either one piece can bodies or two-and three ones and others.
30.The products and liquid propellants in aerosols must be mixed together easily.
(Questions 1~6:Chapter1, 7~12:Chapter2,
13~17:chapter3,18~22:Chapter4,
23~27:Chapter5,28~30:Chapter6)
Ⅱ.Multiple-choice Questions(选择题）
1.The metal cans, generally, were invented .
A. one hundred years ago.
B. about two hundred years ago
C. after early 18th century.
D. before 1900.
2.The most important role of the double seam technology was .
A. to reduce the cost of production.
B. to develop high-speed equipment.
C. to promote environment protection.
D. to increase the types of cans.
3.The tin-free steel with phosphate chromate type of passive film has mainly used the package of .
A. common food. B. liquid water.
C. soft drink D. carbonated beverage.
4.One of the most promising new materials for cans is a chromium-coated steel developed in .
A. Japan. B. American.
C. Germany. D. Belgian.
5.An oleoresin enamels pigmented with zinc oxide are used for packing of .
A. fruits and berries. B. vegetables and meats.
B. fish and sea foods. D. bear and drinks.
6.Generally, the first machine in an automatic can line of metal containers is .
A . flanger B. roller.
C. seamer. D. slitter.
7.Under the condition of same gauge aluminium weight is about of tinplate.　
A.1/2 B.1/3.
C.1/3.5 D.1/4.
8.FDA in USA is very interested in two-piece cans because they have .
A. smooth surface. B. good structure.
C. light weight. D. no side seam.
9.The most practical advantage of D&I cans is .
A. better appearance B. easy production
C. material reduction. D. simple equipment.
10.In the interiors of metal containers, generally good enamels coatings in all respects are .
A. vinyls B. epoxies.
C. phenolics. D .other coatings.
11.The D&RD process, as the job is pushed through each die, differs form D&I method in that the inside dimension of the cup is going .
A. to keep constant. B. to become larger.
C. to become smaller. D. to change easily.
12.One hundred years ago, collapsible tubes were offend to the public first in production of .
A. oil paint. B. semi-liquid food.
C. pharmaceutical. D. toothpaste.
13.When aluminium material is formed into collapsible tubes it must be annealed in order to give .
A. good stabilily. B. large stress.
C. intense rigidity. D. necessary pliability.
14.The collapsible tuble are formed in a press by the technique called as impact extrusion that is .
A. hot forming process. B. cold forming process.
C. casting process. D. special process.
15.From the structural feature steel drums are belong to the .
A. three-piece container B. two-piece container.
D. one-piece container D. seamless container.
16.The lining materials of steel drums must have an important treatment that is .
A. to be dried. B. to be annealed.
C. to be heated. D. to be cured.
17.The main reason of using seven-layer seam for steel drums is .
A. to increase volume B. to produce simply
C. to filling easily. D. to strengthen rigidity.
18.The drawing blank in dies can be divided into five areas according to .
A. material performances. B. equipment shapes.
C. strain-stress conditions D. die features.
19.In the deep drawing, the circumference of the blank would be reduced and could cause a problem of plastic wrinkling in the cup flange because of .
A. large punch force. B. machine power.
C. intense pulling D. compressive hoop stress
20.Through many studies it is clear that in reverse drawing the working of the job will become .
A. almost same B .near constant.
C. quite less D. more severe
21.The most principal reason to determine pressure centre of a die is in order to .
A design the die B. design a press
C. make blanker D. help produce.
22.The principle of aerosols operation, according to the theory of aerodynamics, is first to exist .
A. air pressure force B. liquid pressure
C. pressure difference between inside and outside.
D. a long dip tube inside aerosols.
23.When the product in aerosols is in a layer separate form the propellant the situation of package is .
A. a kind of mixture. B. three-phase system
C.a sort of solution. D. two-phase system.
24.The main role of a “vapor tap” in a value of aerosol is .
A.to help break up the spray. B. to help press the button.
C.to help form the mixture. D. to help control the amount.
(Questions 1~6:Chapter1, 7~11:Chapter2,
12~14:chapter3,15~27:Chapter4,
18~21:Chapter5,22~24:Chapter6.)
Ⅲ.Filling-blank Questions(填空题)
1. There are some methods of applying tin to steel surface, e. g._______, _______,and_______.
2. Now three kind of tin-free steels are usually used in packing industry:_______, _______,and_______.
3. The main purposes of treating the inside of metal containers through special coating are_______, and _______.
4. The outside decoration of metal cans may usually have two methods: _______with paper and _______before sheet metal is formed.
5. On an automatic can production line the first machine generally is _______which is used to cut_______ into _______,and then they are cut into _______and fed into_______.
6. Many types of solders could all be non-ferrous metals, such as_______,_______,_______ ,or _______.
7. The aluminium trays have three types of cloures : _______,_______,and_______.
8. Phenolics , as an interior coating of steel drums, are very effective against _______,low in_______ and their resistance to _______is generally poor.
9. D&I can is the abbreviation of _______ can and D&RD can is the abbreviation of _______ can.
10. When the aerosol container is in a three-phase system, these parts are _______,_______,and _______.
11. The tin coatings are used to protect cans metal form corrosion by following actions:_______, _______,and _______.
12. According to _______ the tempers of the can steel are selected.
13. Two methods are used for applying aluminum to the steel that could be made as aluminum-coated steel:1)_______.2)_______.
14. The meal collapsible tubes have many advantages e.g._______,_______,_______,_______,_______.
15. The collapsible tube metal at last is sent to the _______ to made to_______, the method of which is called_______.
16. Steel drum are made in _______and _______ styles.
17. For making steel drums, although _______ is cleaner and easier to coat with resin,_______ is sometimes preferred.
18. There are two important fabrication parameters in D&RD process: _______ and_______.
19. Many kind of containers are included in aerosols e.g._______, _______,_______or_______. They are dependent on _______,_______,_______.
20. There are four important holes in a typical aerosol valve:_______,_______ ,_______ and_______.
(Questions 1~3:Chapter1, 4~8:Chapter2,
9~15:chapter3,4,16~18:Chapter5,
19~20: Chapter6.)
Ⅳ.Short-answer Questions(问答题)
1． What are the main structural characteristics of three-piece metal cans?
2． What are the main structural characteristics of two-piece metal cans?
3． Describe the fabrication procedures of the can body of the tinplate cans?
4． Explain the main problems existed in the soldered and cemented seams.
5． Why do the metal cans need the special coatings on the inside of these containers?
6． Describe the main advantages of two-piece cans comparing with three-piece cans.
7． Explain the main differences between D&I and D&RD cans.
8． Are there any problems in aerosol cans when it remains at high internal pressure?
9． Try to introduce the application situation of the collapsible metal tubes.
10. Can you understand the advantages of the collapsible metal tubes?
11. Describe the main kinds of materials used for making the collapsible tubes.
12. How many stages can the tubes manufacturing processes are divided into? What are they?
13. What manufacturing procedures are inclined for making steel drums?
14. Introduce the requirements of the lining materials in the steel drums?
15. Describe the main types of the steel drums and pails?
16. Explain how to divide the drawing the drawing blank into five areas?
17. Why does a flange of the drawing bland wrinkle easily?
18. Could you explain the definition of the DF? Why do the values of indicate the level of blank drawing deformation?
19. What is the meaning of limiting DF? Explain how to determine the DN.
20. What are the advantages of the D&I?
21. Explain the structural parameters of the double seam.
22. What are the differences between the double and triple seams?
23. Please briefly describe the operation principle of the aerosol by means of an illustration?
24. Would you like to introduce what the propellant systems are?
25. Can you indicate the function of the four orifices, i.e. body orifice, vapor tap.
26. Please sum up the advantages of the containers.
27. What problems should be considered in the design process for the aerosols elevates?
28. Please introduce the structural parts of a valve in an aerosol.
(Questions 1~5:Chapter1, 6~8:Chapter2,
9~12:chapter3,13~15:Chapter4,
16~22:Chapter5,23~28:Chapter6.)

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