Bewise Inc. www.tool-tool.com Reference source from the internet. Diagram of a gas turbine jet engine

Diagram of a gas turbine jet engine

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Heinkel He 178, the world's first aircraft to fly purely on turbojet power
Bewise Inc. www.tool-tool.com Reference source from the internet.A jet aircraft is an aircraft propelled by jet engines. Jet aircraft fly much faster than propeller-powered aircraft and at higher altitudes -- as high as 10,000 to 15,000 meters, about 33,000 to 49,000 feet (14,900 m). At these altitudes, jet engines achieve maximum efficiency over long distances. The engines in propeller powered aircraft achieve their maximum efficiency at much lower altitudes.

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Bewise Inc. www.tool-tool.com Reference source from the internet. DSV Alvin in 1978, a year after first exploring hydrothermal vents.

DSV Alvin in 1978, a year after first exploring hydrothermal vents.

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Bewise Inc. www.tool-tool.com Reference source from the internet. HMS Invincible, a British Invincible-class aircraft carrier

HMS Invincible, a British Invincible-class aircraft carrier

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Bewise Inc. www.tool-tool.com Reference source from the internet.JIS では鉄鋼を次にように区別しています。鉄は前述した銑鉄、合金鉄、鋳鉄の3つ、鋼は普通鋼、特殊鋼、鋳鍛鋼です。さらに普通鋼は条鋼、厚板、薄板、鋼管、 線材、線のような形状別に、また、特殊鋼は合金鋼、工具鋼、特殊用途鋼などのように性状別に分類されています。このように種々分類されていますが、基本的 には前述したC量によって鉄、鋼、鋳鉄の3つに分けているに過ぎません。鉄にC、Si、Mn、P、Sの5元素が含まれた鋼を炭素鋼又は普通鋼と云います。 この普通鋼にNi、Cr、Moなどの特殊元素が添加されて、特殊な性質を示すような鋼を特殊鋼と呼んでいます。特殊鋼の内、焼入れ・高温焼戻し(調質)を 行って使用するものを合金鋼、工具に用いるものを工具鋼、特殊用途に使う鋼を特殊用途鋼と云っています。表7は鉄鋼材料を分類したものです。以下各種の鋼材について、その特徴を概略解説しましょう。

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Bewise Inc. www.tool-tool.com Reference source from the internet. 碳化鈦(TiC)與氮化鈦(TiN)超硬皮膜之特性與應用:

皮膜種類

皮膜硬度
Hv(50g)

密度
g/cm3

顏 色

其 他 性 質

應 用

TiC

3300-4000

4.92

灰黑到有金屬光澤

在室溫下耐磨性最佳

300℃左右易氧化

沖壓模具(沖模與深抽模)

冷作鍛造工具和拉伸模等

TiN

1900-2400

5.43

金黃色

耐磨性比TiC差,但耐蝕性優良,
且導電性良好,

500℃左右尚很穩定

切削工具

不鏽鋼加工用模具

修邊模

熱作鍛造用模具

壓鑄鑄模銷

化 學 氣 相 蒸 鍍 之 應 用 與 壽 命 提 升例:

工 件

材 質

鍍 層

應 用 於

壽命提升

修邊模

SKH-51

TiN

不銹鋼六角螺帽冷鍛

400%

滾齒模

SKH-53

TiN

AISI4630 料齒輪之滾齒

300%

螺紋滾製模

SKD-11

TiC

低碳鋼螺栓之螺紋滾製

400%

成型工具

SKH-10

TiC

螺絲機之應用

460%

切削工具

SKH-51

TiN

切削低碳鋼

660%

拉伸模

SKD-11

TiC

汽車零件冷抽

1500%

成型沖模

SKD-11

TiC,N

汽車零件冷鍛

2000%

化 學 蒸 鍍 處 理 之 優 點: 1. 附著性高,與母材形成滲透層,鍍層不脫落 2. 提高模具使用壽命,減少開模成本 3. 可重複作披覆處理,減輕生產線的維修成本 4. 製品的加工面光澤佳,加工精度提高 5. 脫模性佳,製品品質提昇 6. 耐氧化、耐腐蝕性佳、模具管理容易 7. 複雜形狀、深孔內部均可披覆 化 學 蒸 鍍 處 理 適 用 之 鋼 材: · 冷工具鋼﹝例如SKD11、DC53、SLD等) · 熱工具鋼﹝例如SKD6、SKD61等) · 高速工具鋼﹝例如SKH9、SKH55等) · 粉末合金鋼﹝例如ASP23、ASP30、ASP60等) · 碳化鎢超硬合金 · 不銹鋼﹝例如SUS420、SUS314等﹞

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Bewise Inc. www.tool-tool.com Reference source from the internet.

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Bewise Inc. www.tool-tool.com Reference source from the internet.M1 Abrams
M1A1 on a live fire exercise in Iraq, 2003 Type Main battle tank Place of origin United States Service history Used by United States, Australia, Egypt, Kuwait, Saudi Arabia Wars Gulf War, Iraq War Production history Designer Chrysler Defense Designed 1970s Manufacturer General Dynamics Unit cost US$4.35 million (M1A2)[1] Produced 1979–present Variants M1A1, M1A2, M1A2SEP Specifications Weight 67.6 short tons (61.4 tonnes) Length Gun forward: 32.04 ft (9.77 m)
Hull length: 26.02 ft (7.93 m) Width 12 ft (3.66 m) Height 8 ft (2.44 m) Crew 4 (commander, gunner, loader, driver)
Armor Chobham, RHA Primary
armament 105 mm M68 rifled cannon (M1)
120 mm M256 smoothbore cannon (M1A1, M1A2, M1A2SEP) Secondary
armament 1 x .50-caliber (12.7 mm) M2HB heavy machine gun
2 x M240 7.62 mm machine guns (1 pintle-mounted, 1 coaxial) Engine AGT-1500C multi-fuel turbine engine
1500 hp (1119 kW) Power/weight 24.5 hp/tonne Transmission Allison DDA X-1100-3B Suspension Torsion bar Ground clearance 0.48 m (M1, M1A1)
0.43 m (M1A2) Operational
range 465.29 km (289 mi)
With NBC system: 449.19 km (279 mi) Speed Road: 67.72 km/h (42 mph)
Off-road: 48.3 km/h (30 mph)

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Bewise Inc. www.tool-tool.com Reference source from the internet. Soldiers from U.S. 3d Armored Cavalry Regiment provide overwatch for troops from their M1 Abrams tank in Biaj, Iraq.

Soldiers from U.S. 3d Armored Cavalry Regiment provide overwatch for troops from their M1 Abrams tank in Biaj, Iraq.

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Bewise Inc. www.tool-tool.com Reference source from the internet. A colored automobile engine

A colored automobile engine

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Bewise Inc. www.tool-tool.com Reference source from the internet.Ford Type Public (NYSE: F) Founded June 17, 1903 Founder Henry Ford Headquarters Flag of the United States Dearborn, Michigan, USA Area served worldwide Key people Henry Ford, Founder
Alan Mulally, President and CEO
William Clay Ford, Jr, Chairman
Industry Automotive Products mainstream/performance vehicles, Automotive parts, Services Automotive financing and services Revenue US$173.9 billion (2007)[1] Operating income US$126 million (2007)[1] Net income US$2.665 billion (2007)[1] Employees 245,000 (2007)[1] Divisions Ford Credit
Ford division
Lincoln
Mercury
Premier Automotive Group
Subsidiaries Automotive Components Holdings
Volvo (cars only) Website www.ford.com

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A large vacuum chamber
Bewise Inc. www.tool-tool.com Reference source from the internet.A vacuum is a volume of space that is essentially empty of matter, such that its gaseous pressure is much less than atmospheric pressure. [1] The word comes from the Latin term for "empty," but in reality, no volume of space can ever be perfectly empty. A perfect vacuum with a gaseous pressure of absolute zero is a philosophical concept that is never observed in practice. Physicists often discuss ideal test results that would occur in a perfect vacuum, which they simply call "vacuum" or "free space" in this context, and use the term partial vacuum to refer to real vacuum. The Latin term in vacuo is also used to describe an object as being in what would otherwise be a vacuum.

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