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鈷基噴焊合金粉末 Cobalt-base sprayed welding alloy powde
鈷基合金是在鈷鉻合金中熔入適量的鎢和碳，鎢的加入使鈷基體進一步固溶強化。碳在鈷中的溶解度很小，因而加入的碳和過量的鎢形成 WC，W2C，M6C等碳化物，這些硬質相彌散分佈在鈷基體中，產生析出強化作用，使該類合金在800℃高溫下，仍能保持優異的高溫強度和高溫硬度，因此鈷、鉻、鎢、碳合金具有優異耐高溫磨損、抗高溫氧化和熱疲勞等綜合性能。
Cobalt-base alloy is produced by melting suitable amount of tungsten and carbon into the cobalt-chrome alloy, which will enhance the solid-solution strengthening of the cobalt base. For the low solubility of carbon in cobalt, the added carbon and superfluous tungsten may generate WC，W2C，M6C and other carbides. The hard materials distribute in the cobalt base and strengthen the separation process, thus the alloy can maintain excellent intension and rigidity under high temperature of 800℃. Thus, the cobalt, chrome, tungsten and carbon alloy have integrated performance of preventing the high temperature wear, oxidation and thermal fatigue.
鈷在417℃溫度以下，為密排六方結構，具有低的摩擦系數，而具有很好的耐磨性。在417℃溫度時發生由密排六方晶體，向麵心立方晶體的轉變，而產生體積應力。因此在噴焊時一般均需將被焊工件預熱到500℃～600℃，以防鈷基焊層開裂。
Below 417℃,cobalt is in dense-hexagonal structure,it has lower frictional coefficient and sound wear resistance. The structure of cobalt will change from dense-hexagonal crystal into face-center-cubic structure under 417℃. The volume stress may appear. Therefore, the welding pieces should be warmed up to 500℃～600℃ to avoid the crack for cobalt-base welding layers.
我公司生產的鈷基合金粉，既有適合等離子堆焊的、激光熔敷的，也有適合氧乙炔焰噴焊的，下麵介紹的鈷基噴焊合金粉，采用塑料桶和鐵桶封裝，但由於粉末顆粒較細，極易吸潮，建議用戶在使用前經120℃保溫兩小時烘乾後使用為佳。
Our company has different types of cobalt-base alloy powder, which can meet the requirements of laser cladding for plasma surfacing and oxyacetylene flame welding. The following cobalt-base sprayed welding alloy powder produced by our company is packaged and sealed in the plastic or metal pail. However, for the thin granularity and humidity-absorbing characteristic of the product, it’s recommended that the customer should dry the products under 120℃ for two hours before useing.
Cobalt-base alloy is produced by melting suitable amount of tungsten and carbon into the cobalt-chrome alloy, which will enhance the solid-solution strengthening of the cobalt base. For the low solubility of carbon in cobalt, the added carbon and superfluous tungsten may generate WC，W2C，M6C and other carbides. The hard materials distribute in the cobalt base and strengthen the separation process, thus the alloy can maintain excellent intension and rigidity under high temperature of 800℃. Thus, the cobalt, chrome, tungsten and carbon alloy have integrated performance of preventing the high temperature wear, oxidation and thermal fatigue.
鈷在417℃溫度以下，為密排六方結構，具有低的摩擦系數，而具有很好的耐磨性。在417℃溫度時發生由密排六方晶體，向麵心立方晶體的轉變，而產生體積應力。因此在噴焊時一般均需將被焊工件預熱到500℃～600℃，以防鈷基焊層開裂。
Below 417℃,cobalt is in dense-hexagonal structure,it has lower frictional coefficient and sound wear resistance. The structure of cobalt will change from dense-hexagonal crystal into face-center-cubic structure under 417℃. The volume stress may appear. Therefore, the welding pieces should be warmed up to 500℃～600℃ to avoid the crack for cobalt-base welding layers.
我公司生產的鈷基合金粉，既有適合等離子堆焊的、激光熔敷的，也有適合氧乙炔焰噴焊的，下麵介紹的鈷基噴焊合金粉，采用塑料桶和鐵桶封裝，但由於粉末顆粒較細，極易吸潮，建議用戶在使用前經120℃保溫兩小時烘乾後使用為佳。
Our company has different types of cobalt-base alloy powder, which can meet the requirements of laser cladding for plasma surfacing and oxyacetylene flame welding. The following cobalt-base sprayed welding alloy powder produced by our company is packaged and sealed in the plastic or metal pail. However, for the thin granularity and humidity-absorbing characteristic of the product, it’s recommended that the customer should dry the products under 120℃ for two hours before useing.
| 型號 | 相當於 | 規格(μm) | 特性簡述 | 主要用途 | 物理性能 | 應用工藝 |
| Co1 | Stellite1 | -150/+53 | 合金中碳和鎢含量高，抗磨粒磨損性能極優，具有耐熱，耐蝕高紅硬性等優良性能，但沖擊強度差，開裂傾向敏感。 | 應用於耐磨料磨損及固狀料沖刷磨損場合。螺旋推進器,泵閥座等。 | ①HRC50-57 ②熔點1265℃ ③流動性17s/50g ④松裝密度4.7g/cm3 | 等離子堆焊 |
| Co2 | Stellite6 | -150/+53 | 在Srellire合金系列中應用最為廣泛一種。韌性較好，在800℃以下溫度范圍內具有優良的耐蝕、耐高溫、抗沖擊等綜合性。 | 氣門進排氣閥、閥座、閘板閥閥板。 | ①HRC38-42 | 等離子堆焊 |
| Co2F | Stellite6 | -106/+45 -200/+90 | 為適用氧乙炔焊加入B、Si元素的Stelllite6改型的粉末，其性能與上述相同。 | 氣門、閥門、閥座等密封麵堆焊。 | ①HRC40-44 ②熔點1180℃ ③流動性16s/50g ④松裝密度4.7g/cm3 | 等離子堆焊 氧乙炔噴焊 |
| Co3 | Stellite12 | -150/+53 -200/+90 | 該合金含鎢高，故基體硬度高，耐磨料磨損性能較強，在800℃高溫下焊層仍具有良好的耐蝕、耐磨、耐熱性能。 | 閥門密封麵，紙張塑料等刀刃口的預保護，排氣閥。 | ①HRC47-50 | 等離子堆焊 |
| Co3F | 同上 | -150/+53 -200/+90 -106/+45 | 為適宜氧乙炔焊，在上述合金中添加瞭B和Si以改善合金工藝性，焊層各項性能與上述基本一致。 | 高溫高壓閥門、閥座氣門等。 | ①HRC47-53 ②熔點1180℃ ③流動性16s/50g ④松裝密度4.7g/cm3 | 等離子堆焊 氧乙炔噴焊 |
| Co4 | Stellite20 | -200/+90 -150/+53 | 碳、鎢含量高其堆焊層具有較強磨粒磨損性和耐蝕性，俁沖擊性差。 | 閥座，旋轉密封環，高溫熱軋輥堆焊。 | ①HRC51-56 | 等離子堆焊 |
| Co4F | 同上 | -106/+45 -200/+90 -150/+53 | 為適宜氧乙炔噴焊工藝，在Co4材料中加入B和Si以改善自熔性。 | 閥門，密封環 | ①HRC51-57 ②熔點1100℃ ③流動性16s/50g ④松裝密度4.8g/cm3 | 等離子堆焊 氧乙炔噴焊 |
| Co5 | Stellite157 | -150/+53 -106/+45 | Co5為鈷基自熔性合金粉具有耐熱，耐蝕、耐沖擊的綜合性能。由於鈷417℃時產生晶形轉變，生成應力，故在噴焊時基體須預熱500℃防止裂紋。 | 應用於600℃-800℃耐高溫，抗氧化，耐燃氣腐蝕等機械零件。 | ①HRC50-53 | 等離子堆焊 氧乙炔噴焊 |
| Co6 | StelliteF | -150/+53 -200/+90 | 它是在Stellite合金中加入較多Ni，鈷基粉，從而改善瞭抗高溫腐蝕性能，高溫紅硬性，耐磨損和抗氧化性。 | 內燃機氣閥，高溫高壓閥門。 | ①HRC39-42 ②熔點1200℃ ③流動性17s/50g ④松裝密度4.6g/cm3 | 等離子堆焊 |
| Co7 | Stellite8 | -150/+53 -200/+90 | Co7是低碳合金以鋁鎳等元素強化基體。室溫硬度低具有良好的耐高溫腐蝕，耐熱沖擊，且有高溫強度和最好的延展性。 | 渦輪葉片，黃銅鑄模和擠壓模。 | ①HRC30-35 | 等離子堆焊 激光熔接; |
| Co8 | Stellite158 | -150/+53 -200/+90 -106/+45 | Co8為鈷基自熔性合金粉，具有耐熱、耐磨、耐蝕等綜合性能。 | 高溫耐磨，耐腐蝕，耐冷熱交變的沖擊場合。 | ①HRC40-45 ②熔點1140℃ ③流動性17s/50g ④松裝密度4.6g/cm3 | 等離子堆焊 氧乙炔噴焊 |
| Co9 | Stellite21 | -150/+53 -200/+90 | 以鉬強化的低碳CoCr合金具有極其良好的耐高溫腐蝕，耐沖擊性能，且有高溫強度和延展性。。 | 閥門，水輪機葉片及鑄模堆焊層。 | ①HRC27-30 | 等離子堆焊 |
| Co10 | Stellite31 | -150/+53 -200/+90 | Co10是代碳加鎳Co-Cr-W合金抗熱疲勞，抗高溫腐蝕性能優異。 | 適用於噴氣發動機高溫濕工件。 | ①HRC31 ②熔點1350℃ ③流動性18s/50g ④松裝密度4.5g/cm3 | 等離子堆焊 |
| Co92AA | -106/+45 -200/+90 -150/+53 | Co92AA是在Co-Cr-W基上加入鐵、鎳、硼的自熔合金，具高磨損性和抗沖擊性。 | 各種破碎錘頭 | ①HRC46-50 | 等離子堆焊 氧乙炔噴 |
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