TW200532033A - Alloy for engine parts and method of producing the same - Google Patents

Abstract

An alloy for engine parts includes, by percent of weight, 1.5-2.5% of carbon, 0.5-1.0% of manganese, at most 0.3% of phosphorus, at most 0.3% of sulfur, 5-12% of chromium, at most 1.0% of molybdenum, at most 0.5% of nickel, at most 0.5% of copper, and at most 0.5% of inevitable impurities, the balance being iron.

Description

200532033

200532033 V. Description of the invention (2) 1.5-2.5% carbon, 1.5-2.5% silicon, 0.5-1.0% manganese, not more than 0.3%, Not more than 0.3% of sulfur, 5-12% of chromium, not more than 10% of turnover, wood more than 0.5 ° /. Nickel, not more than 0.5% of copper, up to 0.5% of the inevitable impurities and other ingredients are iron. The alloy according to the present invention uses a universal testing machine to measure a flexural strength of at least 1200 kgf / mm2, a tensile strength of at least 110 kgf / mm2, and the prepared camshaft can perform a circular shaft operation and run at least 100%. 〇10,000 times without obvious signs of wear (approximately 〇.01-0.015m / m) 〇 The present invention further provides a method for producing the foregoing alloy, which comprises (a) a weight percentage of 55.0-60 · 0% pig iron , 37.5-42.5% by weight of scrap steel and alloys with a weight percentage not exceeding 2.0% by melting (melting temperature is about 1530 ° C-1560 ° C) mixing; (b) for step (a ) For the melted product for sample composition analysis; and (c) adding additional alloys based on the component analysis results obtained in step (b) to make 彳? It meets the target composition of the previous paragraph; but the total amount of the added alloy does not exceed 2.5% by weight. The pig iron suitable for the present invention contains 3-4% carbon by weight, 1.0-1.3% silicon, 0.3-5.0% manganese, not more than 0.001% chromium, not Sulfur exceeding 0.001%, unavoidable impurities, and other components are iron. The scrap steel suitable for the present invention contains not more than 0.00% of carbon, not more than 0.01% of silicon, 0.5 to 0.07% of manganese, and not more than 0.001% of chromium by weight, Inevitable impurities and other ingredients are iron. The aforementioned alloys are used for composition adjustment. Generally, the alloy iron (feH0 — ^ i), which is lower in melting point and less oxidation loss than pure metal, is used, that is, an alloy in which each element is combined with iron. [Embodiment]

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V. Description of the invention (3)

The invention discloses an alloy whose carbon (preferably 2%) has a carbon of 1.5-5.50 / 〇1. 0% (preferably 0.8%), which is not phosphorus and does not exceed 0. 3% (preferably no more than 6%) chromium, no more than 1.0% (more than 0.5% (preferably no more than 0.3%) more than 0.3%) of copper and other ingredients in addition to the aforementioned ingredients Other than that, for example, phosphorus. The appearance of impurities. No, the extent of the impact. Preferably,. The alloy of the present invention can be melted in a furnace using a ratio of a conventionally-known target alloy composition, and then the molten gold can be produced after it has been condensed. To use this, cast a molten metal material onto the camshaft to form the camshaft in the desired shape. Manufacturing, melting, pouring, casting and inspection of camshafts. Contains (by weight) 1 · 5-2 · 5〇 / 〇 · (preferably 2%) silicon, 0.5-more than 0.3% (preferably not more than 0.2%) silicon 2%), 5-12% (preferably no more than 0.5%) of molybdenum, no more than nickel, no more than 0.5% (preferably no more than iron. The alloy of the present invention may contain impurities in an amount of The amount of special impurities present in the alloy of the present invention is produced by the method below 0.5%, which is generally filled with the required various metal raw materials into the metal material and poured into the inner space of the mold according to the previous method. The inventive alloy casting camshaft requires The manufacturing process of the inner space of the mold after it is solidified includes the cleaning of shell molds or sand molds (such as sand blasting and deburring). The present invention also provides a method for producing the foregoing alloy, which comprises: (a) a weight percentage of 55 · 〇 —60% of pig iron, 3.5% by weight 3.5% 4 2.5% of scrap steel and alloys not exceeding 2.0% by weight (melting temperature is about 1 530 ° C-155 (TC) mixed (B) Sampling component analysis of the molten product in step (a); and (c) adding the component analysis result obtained in step (1)) to Alloy to make it conform to the aforementioned composition, but all alloys added

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Of alloy. The following examples are provided to further illustrate the alloys of the present invention and are not intended to limit the scope of the present invention. Example 1 Melting temperature 60. 0% by weight of pig iron, 37.5% by weight of scrap steel and alloys (containing phosphorus, molybdenum, copper, copper) not exceeding 2.0% by weight. The melting temperature is about 1 5 3 0 C) mixed. The pig iron used contains 4% carbon, 1.3% silicon, 0.5% manganese, 0.01% chromium, and 0.01% sulfur by weight.

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Page 8 —___ 一 ^ V. Description of the Invention (5). / Of broken, and other ingredients are iron. The used copper scrap contains 0 · 0 1 ° > 0 · 0 1% silicon by weight, 0 · 7 ° /. The manganese, 0. 1 ° / ◦ chromium and other components / knife are χ. Samples of the molten products are analyzed for composition. 5%。 Then according to the composition analysis ... ^, 々Α 金 do not go alloy so that it meets the aforementioned target composition, but all added by weight percent 2.5%. Example 2 · ”, η Π% of scrap steel is 57.5% by weight of pig iron, 40% by weight U / Q and alloys not exceeding 2.0% by weight (containing phosphorus, molybdenum, Two solutions (melting temperature is about 1 5 3 0. (:) mixed. The pig iron used has a weight of 1 3 with 4% carbon, 1.3% silicon, 0.5% manganese, 0.01% chromium, 〇 · 01%, and other components are iron. The scrap steel used contains 0.01% of the plate '^ 〇. 01% of silicon, 0.7% of manganese, and 0.1% of chromium 5%。 And other ingredients are iron. Next, sample the molten product for component analysis. Then according to the composition analysis results $ ^ alloy so that it meets the composition of the S standard, but all added alloys do not care too much weight percentage 2.5%. Embodiment 3 uses 50.0% by weight of pig iron, 45% by weight and 45% by weight of scrap steel and alloys with a weight percentage not exceeding 2.0% (Approximately 1 5 3 0 ° C) mixed. The pig iron used has a weight of 13% 4% carbon, 1.3% silicon, 0.5% manganese, 0.01% chromium, 0.01% Of And other components are iron. The scrap steel used contains 0 · 0 1% of 叾 v 0 · 0 1% of silicon, 0 · 7% of manganese, 0 · 0 1% of chromium and other components of iron. .Then take the sample composition analysis of the melt and the product. Then add 2 alloys according to the results of the composition analysis so that it meets the aforementioned target composition, but all the alloys added are not

Over 2.5% by weight. It is worth noting that the conventional cast iron such as FCA25 (using weight 4 containing 3.33% of carbon, 1.88% of silicon, and ash) is used. lco / 里 彳.. ,,, y υ · ί / ο, fierce, 0.15% chromium, 〇08% Yushi HZ, he / knife is iron) The camshaft made of circular motion Operation of 5 million: edited, traces of wear (approximately 0.0. Mb.), However it uses 10,000 daggers. The flexural strength measured by the testing machine is only 逵 $ η n l f / 0. The strength is only against 50G kgf / _2, and the tensile strength is only up to

ZbKgr / iiini2 〇 Here, Xi Tian Xi IΓ +, upper τ spheroidal graphite cast iron such as FCD700 (calculated with 3.75% carbon, h75% /% heavy iron) using a universal testing machine Measured ^% = Mammoth and other ingredients are Yizhou Tsai. Although the flexural strength can reach at least 700 kgf / mm2 and the tensile strength can reach at least 70 kgf / mm2, the camshaft produced by it Round shaft action makes the circle | ^ # ', 丨 乂 孕 the pregnancy is caused by the movement of more than 30 million significant wear marks (about 010-10m /, 丄 υ 马 U 就说 考 又 明明 ι 垂 #,) . In contrast, the alloy of the present invention can be used with a strength of at least nn kCTf / 1.27 to 1 200 kgf / with 2, tensile resistance operation Γ less mi million made m sleeve can be used for circular shaft movement Γ, the results show that : =; Grinding damage marks (approximately. Gray cast iron or spheroidal graphite towns are used for white. ^ ^ ~ Iron is more wear-resistant and stronger, and it is suitable for casting engine components (specially red and special although notched) Right too won the day and the day 6 ^ Do not 疋 camshaft), but is not limited to this :: This July special preferred embodiment was revealed that the power should be able to make various changes and modifications, so can be modified. For example, as long as: the alloy within the spirit and scope of the present invention changes the material of the present invention. W abrasion and strong components can be used

200532033 Schematic description of the page 11

Claims (1)

200532033 VI. Application for patent scope. 2. 5 '1. An alloy for engine components, the alloy contains 1.5 carbon by weight, 1.5-2. 5% silicon, 0.5-1. 0% manganese, no more than ^ 0.3% phosphorus, no more than 0.3% sulfur, 5-12% chromium, no more than 1.0% molybdenum, no more than 0.5% nickel, no more than 0.5 % Of copper, up to 0.5% of unavoidable impurities and other ingredients are iron. 2. The alloy for engine components according to item 1 of the scope of patent application, wherein the alloy contains 2% carbon, 2% silicon, 0.8% manganese, not more than 0.2% of phosphorus, Not more than 0.2% sulfur, 6% chromium, not more than 0.5% molybdenum, not more than 0.3%, not more than 0, 3% copper, up to 0.5% of unavoidable impurities and other ingredients For iron. 3. A method for producing an alloy of item 1 or item 2 of the scope of patent application, which comprises: (a) a weight percentage of 5 5. 0-6 0. 0% pig iron, a weight percentage of 37 · 5-4 2. 5% scrap steel and alloys whose melting percentage does not exceed 2.0% by weight; (b) Sampling component analysis of the refining product in step (a); and (c) Component analysis according to step (b) As a result, the alloy is added so that it meets the composition defined in item 1 of the scope of the patent application, but the total alloy added does not exceed 2.5% by weight. 4. The method for producing an engine component alloy according to item 3 or item 2 of the scope of patent application according to item 3 of the patent application scope, wherein the pig iron contains 3-4% carbon by weight, 1.0-1. 01% 3% of silicon, 0. 3-0. 5% of manganese, not more than 0.01% Page 12 No, no more than 0 · 01%: -ΰί φ j, · of which, impurities and other components to be avoided by the town are 5, according to the scope of the patent application for the use of item 3. or 2 of the engine component alloy The method, in which the scrap steel has a carbon content of no more than 0.01% by weight, and no more than 0.001% of silicon, which contains no more than U1%, is unavoidable. 6. According to the third scope of the patent application The method for producing an engine component alloy of the item of patent scope item or item 2 of this item ... This step U ::: 1 The temperature is about 1530 ° C-1560 ° C. 7 kinds of gold, including carbon by weight, 15-2 · 5% silicon 0.5 · 1 · 0% manganese, not more than 0: 3% phosphorus, not more than 0.5% Impurities to be avoided in Nabu-cho and other sulphur '5-m chromium' are not more than 10%, not more than 05%: two and not more than 0.5% of copper are divided into iron. 8. The alloy according to item 7 of the scope of patent application, wherein the alloy contains 2% of rhenium, 2% of silicon, 0.8% of manganese, not more than 0.2% of phosphorus, and not more than 0 · by weight a. 2% sulfur, 6% chromium, not more than 0.5% molybdenum, not more than 0.3%: two K0.3% steel 'up to 0.5% of unavoidable impurities and other ingredients are iron. 20 wins and 203 3 VI. Patent application scope 9. A method for producing patented patents, which includes: the formula of item or item 8 (a) the weight percentage of 55 · 0-60 · 〇% of the raw material, · · '42 · 5% of scrap steel and weight percentage does not exceed 2 iron. 'Weight percentage 37.5 ~ (b) melting the product of step (a). 0% alloy melting and mixing; (c) analysis of the composition of the components obtained according to step (b); and the first item of the scope of patent application 5%。 Defined into eight, ° fruit; ^ into the alloy so that its symbol does not exceed 2.5% by weight. Knife 'but all alloys added' 1 0, according to the method of the patent application scope of item 9 or 7 or 8 alloy, 1 If production of patent application scope of carbon, 1.0-1.3% silicon, 0.3_〇5 % = ^ Iron contains 3-4% by weight of sulphur exceeding 0.01%, unavoidable ^, chromium not exceeding 0, unavoidable impurities and other ingredients are iron. 11. According to the patent application section, the method of item Y or item 8 alloys = 9 items. It is used for the production of 0.01% carbon in the patent application scope, not exceeding 0 垓 Scrap steel contains not more than 0.01% chromium by weight, unavoidable, 0.5-0.7% manganese, not exceeding brothers day] shellfish and other ingredients For iron. 1 2. According to the method of applying for patent No. 7 or No. 8 alloy, the item No. 1 is used for the production of the applied patent 'range No. 1530 ° C-1560 ° C. The melting temperature of this step (a) is about