绗竴绔?/p>
宸ョ▼鏉愭枡瀵艰
缁冧範棰?/p>
涓�銆佹�濊�冮
1.
甯冩皬鍜屾礇姘忕‖搴︽硶鍚勬湁浠�涔堜紭缂虹偣锛熶笅鍒楁儏鍐靛簲閲囩敤閭ｇ纭害娉曟潵妫�鏌ュ叾纭害锛?/p>
搴撳瓨閽㈡潗
纭川鍚堥噾鍒�澶?/p>
閿讳欢
鍙拌檸閽抽挸鍙?/p>
2.
涓嬪垪绗﹀彿鎵�琛ㄧず鐨勫姏瀛︽�ц兘鎸囨爣鐨勫悕绉板拰鍚箟鏄粈涔堬紵
蟽
b
锛?/p>
蟽
s
锛?/p>
蟽
r0.2
锛?/p>
未
锛浬?/p>
k
锛?/p>
HRC
锛?/p>
HBS
锛?/p>
HBW
3.
灏嗛挓琛ㄥ彂鏉℃媺鎴愪竴鏉＄洿绾匡紝杩欐槸寮规�у彉褰㈣繕鏄鎬у彉褰紵
4.
Define strength. Explain the procedure for measuring the tensile strength of steel.
5.
Explain the behavior of steels when they are tensile loaded.
6.
Define the following as related to engineering materials and explain the principles of their measurement.
(a) Hardness; (b) Ductility
7.
Briefly explain the Brinell hardness test.
8.
Explain how the toughness of a material is measured?
9.
What are the different tests available for hardness measurement? Compare their individual merits.
10.
浠撳簱涓贩瀛樹簡鐩稿悓瑙勬牸鐨?/p>
20
閽€�?/p>
45
閽㈠拰
T10
鍦嗛挗锛岃鎻愬嚭涓�绉嶆渶涓虹畝渚跨殑鍖哄垎鏂规硶銆?/p>
11.
鐜版嫙鍒堕�犲涓嬩骇鍝侊紝璇蜂粠纰崇礌閽腑閫夊嚭閫傜敤鐨勯挗鍙凤細
鍏铻洪拤
杞﹀簥涓昏酱
閽冲伐閷惧瓙
娑插寲鐭虫补姘旂綈
娲绘惉鎵?/p>
鑴哥泦
鑷杞﹀脊绨?/p>
閽?/p>
閿?/p>
闂ㄧ獥鍚堥〉
12.
閽㈠拰閾佸湪鎴愬垎鍜岀粍缁囦笂鏈変粈涔堜富瑕佸尯鍒紵纾峰拰纭綔涓洪挗閾佺殑涓�鑸潅璐ㄦ椂锛屽閽㈤搧鎬ц兘鏈変粈涔堝奖鍝嶏紵
13.
T10A
鍜?/p>
9SiCr
鍚勫睘浠�涔堥挗绉?/p>
,
鍚⒊閲忓垎鍒槸澶氬皯
?
瀹冧滑鍦ㄤ娇鐢ㄤ笂鏈変綍鍖哄埆
?
涓嬪垪宸ュ叿搴斿垎鍒�夌敤瀹冧滑涓殑鍝竴绉?/p>
?
鈶犳満鐢ㄤ笣閿?/p>
鈶℃湪宸ュ埁鍒�
(
鎵嬪伐
)
鈶㈤挸宸ユ墜閿潯
鈶ｆ墜宸ョ粸鍒�
鈶ら噺鍏?/p>
.
14.
State the difference between steel and cast iron, with respect to their compositions.
15.
State the reason as to why white cast iron is more brittle than grey cast iron.
16.
State how the carbon content influences the strength and ductility of plain carbon steels.
17.
State the ranges of composition for low, medium and high carbon steels. Give two applications for each range.
18.
Write the composition of the following steels:
20, 75, Tl0A, 30CrMnSi, 38CrMoAlA, 40CrNiMn, 60Si2Mn, 9Mn2V
, CrWMn, W18Cr4V,
W6Mo5Cr4V2, lCrl8Ni9Ti.
19.
鏌愪骇鍝佷笂鐨勯摳閾佷欢澹佸帤璁℃湁
5
銆?/p>
20
銆?/p>
52mm
涓夌锛屾満姊版�ц兘鍏ㄩ儴瑕佹眰
蟽
b=150Mpa,
鑻ュ叏閮ㄩ�夌敤
HT150
鏄惁姝ｇ‘锛?/p>
20.
涓嬪垪閾镐欢瀹滈�夌敤閭ｇ被閾搁�犲悎閲戯紵璇存槑鐞嗙敱銆?/p>
杞﹀簥搴婅韩
鎽╂墭杞︽苯缂镐綋
鍘嬫皵鏈烘洸杞?/p>
鐏溅杞?/p>
鍧﹀厠灞ュ甫鏉?/p>
鑷潵姘撮緳澶?/p>
姹界几濂?/p>
鍑忛�熷櫒铚楄疆
鑷潵姘村集澶?/p>
21.
浠�涔堟槸閫�鐏紵浠�涔堟槸姝ｇ伀锛熶袱鑰呯殑鐗圭偣鍜岀敤閫旀湁浠�涔堜笉鍚岋紵
22.
閽㈠湪娣伀鍚庝负浠�涔堣鍥炵伀锛熶笁绉嶇被鍨嬪洖鐏殑鐢ㄩ�旀湁浣曚笉鍚岋紵姹借溅鍙戝姩鏈虹几鐩栬灪閽夎閲囩敤鍝鍥炵伀锛熶负浠�涔堬紵
23.
閿潯銆佸ぇ寮圭哀銆佽溅搴婁富杞淬�佹苯杞﹀彉閫熺榻胯疆鐨勬渶缁堢儹澶勭悊鏈変綍涓嶅悓锛?/p>
24.
鍦ㄧ儹澶勭悊杩囩▼涓紝涓轰粈涔堝姞鐑悗瑕佹湁涓�娈典繚娓╂椂闂达紵鍦ㄤ粈涔堟儏鍐典笅鍙互涓嶈淇濇俯锛?/p>
25.
Distinguish between the following:
Quenching and tempering
Normalising and annealing
26.
Why don't the low carbon steels respond to hardening by quenching process?
27.
Explain why tempering follows the quenching process in the heat treatment of steels.
28.
Why is annealing done?
29.
State the purpose served by quenching and tempering.