石墨匣钵采用石墨粉末材料压制形成，具有耐高温抗氧化的性能，使用寿命更长。成型方式采用模压方式，可以边压制边固化成型，生产效率大大提高。模压成型石墨匣钵具有高致密，耐高温，抗氧化等特色，一般用作高温烧结过程中装载物料的容器。石墨匣钵的成型方法包括混捏、预热、模压成型、石墨化处理。模压石墨匣钵一次成型液压机根据匣钵的规格尺寸，多选用315吨、400吨、500吨、630吨、800吨、1000吨、1500吨等。文中这款800吨石墨匣钵成型液压机是公司专门为客户量身设计定做，由主机及控制机构两部分组成，通过管路和电气设备联系起来构成总体，主机部分包括机身、油缸、限程机构、模架等。
graphite sagger pressing process:
The sagger or crucible mold is fixed in the upper and lower beams, and driven by the main oil cylinder, the upper and lower beams pressurize the sagger powder in both upper and lower directions, effectively ensuring the compactness of sagger products and improving the product quality. The 800-ton graphite sagger forming hydraulic press adopts PLC intelligent control and has a high degree of automation.
The 800-ton graphite sagger forming hydraulic press has an independent power system and electrical system, adopts PLC and touch screen control mode, and has inching and semi-automatic functions. Among them:
1. Press the start button with both hands when semi-automatic to realize automatic forming of powder loading, pressing, floating pressing and demoulding;
2. When inching, press the button once to realize the current action, and release the button to stop the action;
3. The working pressure and working stroke of the 800-ton graphite sagger forming hydraulic press can be adjusted within a certain range to meet the process needs of different products of users.
4. The main body of the 800-ton graphite sagger forming hydraulic press adopts vertical four-column and four-beam, which can realize two-way equal pressing;
5. PLC control and proportional valve assembly can realize low and high pressure multiple pressurization and stable pressure forming, which can meet the various process requirements of refractory products;
6, standard remote control switch, 800 tons of graphite sagger molding hydraulic press running speed adjustable, good flexibility, can effectively protect the mold;
7, the use of electro-hydraulic servo control system, advanced electro-hydraulic control and accurate hydraulic two-way sequence of high and low pressure operation system, high pressure, fast speed, low power consumption, low noise.
8. The main body of the 800-ton graphite sagger forming hydraulic press adopts a vertical four-column, two-way pressurization structure, and the oil pump is directly driven. It can realize two-way equal pressing, low and high pressure multiple pressurization and stable pressure forming, and can meet the various process requirements of refractory products.
9. The hydraulic system is double pump and double circuit, and adopts professional combined valve block to realize the working cycle of packing, exhaust, pressurization and demoulding.
800 tons of graphite sagger molding hydraulic press process action:
1. After the feeding is completed, the main cylinder of the 800-ton graphite sagger forming hydraulic press descend quickly, pressurize and exhaust slowly, and the exhaust times can be adjusted for 0-4 times; After the exhaust is completed, the pressure is held;
2. After the main cylinder exhausts and pressure, the lower cylinder rises and presses, exhausts, and the exhaust times are adjustable for 0-4 times. After the exhaust is completed, the pressure is held;
3. After the lower cylinder is pressurized, the main cylinder is pressurized to the set pressure once, and then the pressure is held;
4, pressure relief, demoulding, product removal.
Note: Exhaust times, exhaust pressure, pressing pressure, frame and bottom loading height can be adjusted on the touch screen, and various delays can be set separately.
山东众友重工设计生产的800吨石墨匣钵成型液压机设备实现了"压制效率高、布料均匀精准、匣钵坯体密度高、质量稳定性好"的安全、环保、节能生产价值、性价比高，双向加压、静压成型等技术更好的满足耐火材料匣钵制品的成型工艺。