摘要:
An address translating program enables a server to identify the addresses of clients without the need for any special processing on the side of the server. When a computer receives a request packet, which has a source address translated into the address of a proxy server, output from a client to a server, via the proxy server, the computer analyzes contents of the request packet to acquire the address of the client. Then, the computer translates the source address of the request packet into the acquired address of the client and transmits the request packet to the server. Then, when the computer receives a response packet in response to the request packet from the server, the computer translates a destination address of the response packet from the address of the client into the address of the proxy server, and transmits the response packet to the proxy server.
摘要:
An address translating program enables a server to identify the addresses of clients without the need for any special processing on the side of the server. When a computer receives a request packet, which has a source address translated into the address of a proxy server, output from a client to a server, via the proxy server, the computer analyzes contents of the request packet to acquire the address of the client. Then, the computer translates the source address of the request packet into the acquired address of the client and transmits the request packet to the server. Then, when the computer receives a response packet in response to the request packet from the server, the computer translates a destination address of the response packet from the address of the client into the address of the proxy server, and transmits the response packet to the proxy server.
摘要:
A heat-resistant steel contains 0.1-3 mass % of Cr and satisfies the following equation: 0.1≦Nb+Mo+V and MX-type complex precipitates formed inside microcrystalline grains contain 30 mass % or more of Mo and 7 mass % or more of Nb. Also provided is a process for producing the alloy steel product involving casting, forging, hot rolling, normalizing, optionally direct quenching, cooling at a predetermined cooling rate, and tempering.
摘要翻译:耐热钢含有0.1〜3质量%的Cr,满足下式:0.1 <= Nb + Mo + V,微晶粒内形成的MX型复合析出物含有Mo为30质量%以上,7质量%以下, 更多的Nb。 还提供了一种用于生产合金钢产品的方法,包括铸造,锻造,热轧,归一化,可选地直接淬火,以预定的冷却速度冷却和回火。
摘要:
A low Mn-low Cr ferritic heat resistant steel consisting essentially of, in weight %: 0.02-0.20% C, up to 0.7% Si, less than 0.1% Mn, up to 0.8% Ni, 0.8-3.5% Cr, 0.01-3.0% W, 0.1-0.5% V, 0.01-0.20% Nb, 0.001-0.05% Al, 0.0005-0.05% Mg, 0.0005-0.01% B, less than 0.05% N, up to 0.03% P, up to 0.015% S, 0.001-0.05% Ti and the balance Fe and incidental impurities, wherein the B content is defined so as to satisfy the following formula (14/11)B>N-N(V/51)/{(C/12)+(N/14)}-N(Nb/93)/{(C/12)+(N/14)}-N(Ti/48)/{C/12)+(N/14)}. The steel can further contain optionally 0.01-1.5% Mo, and/or one or more elements selected from the group consisting of 0.01-0.2% La, 0.01-0.2% Ce, 0.01-0.2% Y, 0.01-0.2% Ca, 0.01-0.2% Ta and 0.01-0.2% Zr. The steel can be used in place of the austenitic steels or high Cr ferritic steels, since it has remarkably improved toughness, workability and weldability, and excellent creep properties at elevated temperatures.
摘要:
A low alloy steel for oil country tubular well which has a yield stress of 110 ksi or above, and excellent sulfide stress cracking resistance. The low alloy steel comprises, by weight, 0.2 to 0.35% carbon, 0.2 to 0.7% chromium, 0.1 to 0.5% molybdenum, 0.1 to 0.3% vanadium, 0 to 0.5% silicon, 0 to 1% manganese, 0 to 0.1% aluminum, 0 to 0.1% niobium, 0 to 0.05% titanium, 0 to 0.005% boron, 0 to 0.1% zirconium, 0 to 1% tungsten, 0 to 0.01% calcium, 0.025% or less phosphorus, 0.01% or less sulfur, 0.01% or less nitrogen, and 0.01% or less oxygen. The low alloy steel further comprises a total amount of precipitated carbides between about 2 to 5% by weight, and a ratio of the MC type carbide to the total amount of the precipitated carbides is between about 8 to 40% by weight.
摘要:
The present invention discloses high chromium ferritic heat-resistant steel which has remarkable properties that the base metal and welded joints of the steel both exhibit excellent long term creep strength at elevated temperatures over 600.degree. C. excellent resistance to steam oxidation, and excellent toughness at room temperatures. The chemical composition of main elements of the steel of the invention is as follows:______________________________________ Cr: 8.0 to 13.0%, W: 1.5 to 4.0%, Co: 2.5 to 8.0%, Ta: 0.01 to 0.50%, Nd: 0.001 to 0.24%, ______________________________________ wherein % means % by weight.The steel of the present invention further encompasses steels which contain, in addition to the above essential chemical composition, at least one element selected from the group consisting of Sc, Y, La, and Ce, or at least one element selected from the group consisting of Hf, Ti, and Zr, or at least one element from each of the two groups at the same time. When creep property and toughness are required for welded joints, the amounts of W, Mo, Ta, Nb, and B are selected properly.