金属材料热成形工艺用玻璃防护润滑剂金属热处理保护涂料

环保型玻璃防护润滑剂和金属热处理保护涂料涂敷于钛合金、高温合金、不锈钢、结构钢等金属材料表面，随工件加热时，生成熔融致密薄膜，起到防氧化、防脱碳及防渗氢的作用；玻璃防护润滑剂在金属成形时，还起到润滑、绝热和对模具保护的作用；降低锻件的变形抗力、提高模具的使用寿命、锻件可获得更高表面质量。     

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环保型玻璃防护润滑剂和金属热处理保护涂料涂敷于钛合金、高温合金、不锈钢、结构钢等金属材料表面，随工件加热时，生成熔融致密薄膜，起到防氧化、防脱碳及防渗氢的作用；玻璃防护润滑剂在金属成形时，还起到润滑、绝热和对模具保护的作用；降低锻件的变形抗力、提高模具的使用寿命、锻件可获得更高表面质量。     

首届锻压装备与制造技术论坛暨全国锻压设备八届一次学术研讨及产品信息交流会

环保型玻璃防护润滑剂和金属热处理保护涂料涂敷于钛合金、高温合金、不锈钢、结构钢等金属材料表面，随工件加热时，生成熔融致密薄膜，起到防氧化、防脱碳及防渗氢的作用；玻璃防护润滑剂在金属成形时，还起到润滑、绝热和对模具保护的作用；降低锻件的变形抗力、提高模具的使用寿命、锻件可获得更高表面质量。     

金属材料热成形工艺用玻璃防护润滑剂金属热处理保护涂料

环保型玻璃防护润滑剂和金属热处理保护涂料涂敷于钛合金、高温合金、不锈钢、结构钢等金属材料表面，随工件加热时，生成熔融致密薄膜，起到防氧化、防脱碳及防渗氢的作用；玻璃防护润滑剂在金属成形时，还起到润滑、绝热和对模具保护的作用；降低锻件的变形抗力、提高模具的使用寿命、锻件可获得更高表面质量。     

工业炉加热技术学术研讨会

环保型玻璃防护润滑剂和金属热处理保护涂料涂敷于钛合金、高温合金、不锈钢、结构钢等金属材料表面，随工件加热时，生成熔融致密薄膜，起到防氧化、防脱碳及防渗氢的作用；玻璃防护润滑剂在金属成形时，还起到润滑、绝热和对模具保护的作用；降低锻件的变形抗力、提高模具的使用寿命、锻件可获得更高表面质量。     

金属材料热成形工艺用玻璃防护润滑剂金属热处理保护涂料

环保型玻璃防护润滑剂和金属热处理保护涂料涂敷于钛合金、高温合金、不锈钢、结构钢等金属材料表面,随工件加热时,生成熔融致密薄膜,起到防氧化、防脱碳及防渗氢的作用;玻璃防护润滑剂在金属成形时,还起到润滑、绝热和对模具保护的作用;降低锻件的变形抗力、提高模具的使用寿命、锻件可获得更高表面质量。公司长期专业从事玻璃防护润滑剂和金属热处理保护涂料的研究和生产,针对不同金属材料和不同压力热成形工艺和热处理保护工艺的特点,研发出了系列玻璃润滑剂和金属热处理保护涂料系列产品,具有超细粉加工技术。公司具有完善的生产和试验…     

金属材料热成形工艺用玻璃防护润滑剂金属热处理保护涂料

环保型玻璃防护润滑剂和金属热处理保护涂料涂敷于钛合金、高温合金、不锈钢、结构钢等金属材料表面,随工件加热时,生成熔融致密薄膜,起到防氧化、防脱碳及防渗氢的作用;玻璃防护润滑剂在金属成形时,还起到润滑、绝热和对模具保护的作用;降低锻件的变形抗力、提高模具的使用寿命、锻件可获得更高表面质量。公司长期专业从事玻璃防护润滑剂和金属热处理保护涂料的研究和生产,针对不同金属材料和不同压力热成形工艺和热处理保护工艺的特点,研发出了系列玻璃润滑剂和金属热处理保护涂料系列产品,具有超细粉加工技术。公司具有完善的生产和试验…     

金属材料热成形工艺用玻璃防护润滑剂金属热处理保护涂料

环保型玻璃防护润滑剂和金属热处理保护涂料涂敷于钛合金、高温合金、不锈钢、结构钢等金属材料表面,随工件加热时,生成熔融致密薄膜,起到防氧化、防脱碳及防渗氢的作用;玻璃防护润滑剂在金属成形时,还起到润滑、绝热和对模具保护的作用;降低锻件的变形抗力、提高模具的使用寿命、锻件可获得更高表面质量。公司长期专业从事玻璃防护润滑剂和金属热处理保护涂料的研究和生产,针对不同金属材料和不同压力热成形工艺和热处理保护工艺的特点,研发出了系列玻璃润滑剂和金属热处理保护涂料系列产品,具有超细粉加工技术。公司具有完善的生产和试验…     

金属材料热成形工艺用玻璃防护润滑剂金属热处理保护涂料

环保型玻璃防护润滑剂和金属热处理保护涂料涂敷于钛合金、高温合金、不锈钢、结构钢等金属材料表面 ,随工件加热时 ,生成熔融致密薄膜 ,起到防氧化、防脱碳及防渗氢的作用 ;玻璃防护润滑剂在金属成形时 ,还起到润滑、绝热和对模具保护的作用 ;降低锻件的变形抗力、提高模具的使用寿命、锻件可获得更高表面质量。公司长期专业从事玻璃防护润滑剂和金属热处理保护涂料的研究和生产 ,针对不同金属材料和不同压力热成形工艺和热处理保护工艺的特点 ,研发出了系列玻璃润滑剂和金属热处理保护涂料系列产品 ,具有超细粉加工技术。公司具有完善的生…     

金属材料热成形工艺用玻璃防护润滑剂

环保型玻璃防护润滑剂涂敷于钛合金、高温合金、不锈钢、结构钢等金属材料表面 ,随工件加热时 ,生成熔融致密薄膜 ,起到防氧化、防脱碳及防渗氢的作用 :金属成形时 ,起到润滑、绝热和对模具保护的作用 ,降低锻件的变形抗力 ,提高模具的使用寿命、锻件可获得更高表面质量。公司长期专业从事玻璃防护润滑剂的研究和生产 ,针对不同金属材料和不同压力热成形工艺的特点 ,研发出了系列玻璃润滑剂产品。具有超细粉加工技术。公司具有完善的生产和试验设备、检测仪器。具有年产 5 0t的生产能力。产品广泛应用于 :航空、航天、冶金、有色、机械等领…     

1Mn18Cr18N钢无磁性护环锻件的试制

1Mn18Cr18N钢系无磁性高锰奥氏体不锈钢,该钢种合金含量高,可锻温度区间窄,在锻造过程中易出现表面裂纹。采用电炉冶炼、电渣重熔工艺获得优质钢锭。锻造加热温度为1190~1210℃,终锻温度在900℃以上。多火次,小压下量锻造,把表面裂纹减轻到最低程度。固溶处理后生产出了满足用户需求的护环锻件。     

Application of load pulsation using servo press to plate forging of stainless steel parts

Load pulsation using a servo press was applied to a forging process of a stainless steel sheet having high flow stress and adhesive bond. The effect of the load pulsation on the deformation behaviour of a stepped stainless steel part was examined. The cavity and rollover formed on the upper surface and on the bottom boss surface, respectively, are also decreased by the load pulsation. In the load pulsation, gaps for feeding a liquid lubricant are formed around edges and corner of the deforming plate by a difference in elastic recovery between the die and plate in each release of load, and thus these regions are automatically re-lubricated. The re-lubrication function was improved by immersing the plate in the lubricant during forging. The re-lubrication function for low-cost tool steel was higher than that high-cost tungsten carbide because of smaller Young's modulus.     

2205双相不锈钢锻造失效分析

针对2205双相不锈钢在实际工业化生产中出现的锻造失效问题进行了研究。采用10 t EAF-AOD双联工艺冶炼2205双相不锈钢,浇注2支4.2 t钢锭。钢锭化学成分合格,表面质量良好,但在锻造开坯过程中,钢锭表面出现大量横向裂纹,导致锻件产品报废。利用金相显微镜、扫描电镜以及能谱分析仪等,对2205双相不锈钢在锻造过程中出现的裂纹缺陷进行金相组织、截面形貌及能谱分析。结果表明:2205双相不锈钢锻造失效主要原因是,锻前加热过程中,在850℃进行了时效处理,析出大量σ脆性相,导致钢的塑韧性急剧下降,受到变形力作用后表面严重开裂;热加工过程中,2205双相不锈钢在600~1000℃温度范围内应快速升温,不宜做时效处理,避免σ相析出,恶化钢的力学性能。     

Z2CND18-12N.S阀门钢锻造工艺研究

奥氏体不锈钢在实际生产中,常出现晶间裂纹、表面横裂等缺陷,因此对生产实践数据的研究,就显得十分重要。本文阐述了核级阀门钢Z2CND18-12N.S的生产过程,通过对工艺路线设计、锻造温度范围、变形火次、变形量、每道次压下量等参数的确定,制定出锻造工艺,最终使产品通过各项检验,并为生产高级别的不锈钢产品积累了数据。     

Formation of Si diffusion layer on stainless steels and their high temperature corrosion resistance in molten salt

The surface alloying of Si into SUS430 and SUS304 stainless steels was achieved by a pack-cementation method. A high-temperature corrosion test was undertaken under a corrosive ash in a high-temperature gas, which simulated the environment of a waste incinerator. The effect of the surface alloying of Si on the high temperature corrosion resistance of these stainless steels was examined. The result of the corrosion test showed that the corrosion mass loss of the siliconized stainless steel was lower than that of non-treated stainless steel. It was thought that the high temperature corrosion resistance in the corrosive ash containing large amounts of molten salt was improved by the surface alloying of Si. The change in corrosion loss with test time in the corrosive ash was also examined. The corrosion loss of the non-treated stainless steels rapidly increased. On the other hand, the corrosion rate of the siliconized stainless steels was small.It was found from the observation and EPMA analysis of a cross-section of the specimen after the corrosion test that, for the non-treated stainless steels, the metallic elements were dissolved into the molten salt. On the other hand, for the siliconized stainless steels, a scale consisting of silicon oxide was formed on the steels. As a result, the dissolved metallic elements were small.The electrochemical studies indicated that there was an effect of the surface alloying of Si on the hot corrosion resistance of the stainless steels. Hence, the corrosion potentials of the siliconized steels were higher than those of the non-treated steels. The increase in the anodic current densities for the siliconized steels was smaller than that for the non-treated steels. It was thought that the electrochemical corrosion reaction was difficult to occur due to the surface alloying of Si into the stainless steels.     

Electrochemical synthesis of ferritic stainless steels alloyed with 1 wt-%Ti,V and Nb in sulphuric acid solution

Abstract

Corrosion behaviours of stainless steel alloys containing corrosion resistant elements were investigated. Ferritic stainless steel electrodes were synthesised by the application of a scan rate of 1 mV s^–1. Stainless steels were unalloyed and alloyed with approximate 1 wt-% Ti, V and Nb elements. The samples were obtained from casting and forging. The steels were exposed to different heat treatments. Heat treatment was not applied to the first group of samples. The second and the third group of samples were rapidly cooled after annealing at 1100°C for 30 and 180 min respectively. The corrosion performances of ferritic stainless steels were investigated in 0·1 M H₂SO₄ solution, by use of electrochemical impedance spectroscopy. Scanning electron microscopy (SEM) investigations were performed. Scanning electron microscopy micrographs showed generalised pitting on the surface. Corrosion resistance was calculated by Stearn-Geary equation. It was determined that titanium has the best effect on the corrosion resistance of ferritic stainless steels homogenised for 180 min.     

Effect of Overheating on the Mechanical Properties of Roll-Foundry and Die Steels

The effect of overheating on the properties and structure of roll steels 9Kh2, 9Kh2MF, and 9Kh2SVF and steel 5KhNV used for the production of heavy-duty forging dies is studied. It is shown that the elevation of the heating temperature changes the fracture behavior of roll steels. The temperature of overheating of roll steels is established. It is shown that the consequences of the overheating can be removed by means of subsequent quenching from conventional temperatures (860 – 890°C). The overheating is shown to have a weak effect on the properties of steel 5KhNV, which can be removed by single heating to a temperature of 890°C.     

4Cr3Mo2MnVNbB模具钢的应用

外科手术器械产品大都采用Cr13型马氏体不锈钢锻造成型。但由于马氏体不锈钢坯件基体硬度较高,热变形性能差,所以锻模寿命通常不高,已成为影响产品生产成本的主要因素之一。试验证明,采用4Cr3Mo2MnVNbB(Y4)钢替代3Cr2W 8V钢制造手术器械锻模,模具的使用寿命显著提高,已成功用于生产。     

大锻件锻造过程中温度场测定及其结果分析

大型锻件锻造过程中工件温度场的变化规律对于保证锻件质量具有重要作用,由于锻件受环境温度、保温情况等诸多因素影响,生产中很难准确预测锻件锻造过程中温度变化规律。通过实验模拟实际生产中锻件加热曲线,在不同保温措施下,取锻件芯部至表层不同测控点进行锻造过程中的温度测量,通过数据分析建立了Mn18Cr18N护环钢锻造过程中的温度场,得出锻件的温度差与时间变化曲线及温度变化速率图,描述了工件在一定保温措施下的温度场变化情况,其结论对准确了解Mn18Cr18N护环钢锻造过程中的温度变化规律具有实际指导意义。     

Effect of electric current heating on hot deformation resistance and microstructure of steels

The effect of electric current (EC) heating on the high temperature mechanical behavior and microstructure of plain carbon and austenitic stainless steels was examined using a Gleeble thermomechanical simulator. In stainless steel, EC heating is shown to reduce the flow stress, strain hardening rate, the apparent activation energy for deformation and to increase the strain rate sensitivity of the flow stress. These are accompanied by the acceleration of dynamic recrystallization and by an increase in recrystallized grain size. The EC effect is more pronounced at lower Zener-Hollomon parameters. In plain carbon steel, EC has almost no influence on flow stress. The EC heating effect on mechanical behavior and microstructure is related to deformation resistance, electric resistivity and heat conductivity of the material being tested.