DMC (dough molding compound) hydraulic press machine and BMC (block molding compound) hydraulic press machine are both used for composite material molding equipment. So what is the difference between a DMC hydraulic press machine and a BMC hydraulic press machine?
| Description | DMC hydraulic press machine | BMC hydraulic press machine |
| Material Characteristics | DMC is a thermosetting plastic reinforced with glass fibers, usually in the form of agglomerates or granules, with high fiber content and good mechanical properties, suitable for the production of high-strength, high-rigidity parts. | BMC is a glass fiber reinforced thermosetting plastic, usually in the form of a block or paste, with good insulation, corrosion resistance and processing performance, suitable for the production of electrical parts, building structural components and so on. |
| Molding process | DMC molding requires high pressure and temperature, and the orientation and distribution of fibers during the molding process have a large impact on the product properties. Therefore, DMC hydraulic press machine are usually equipped with high-precision control systems to ensure the uniformity of molding pressure and temperature. | BMC molding process is relatively simple, fast molding speed, suitable for mass production.BMC hydraulic press machine are usually equipped with fast closing, multi-stage pressurization and exhaust functions to adapt to the characteristics of BMC materials. |
| Equipment Design | 1. 1. Usually adopts frame or four-column structure to improve the rigidity and stability of the equipment.
2. Equipped with high-precision servo control system, it supports multi-stage pressure and speed control to ensure the accuracy of the molding process.
3. Optional dynamic leveling device is available to solve the problem of partial load caused by material asymmetry during the molding process. |
1. Mostly adopts four-column structure, simple structure, low cost, suitable for small and medium scale production.
2. The equipment is usually equipped with quick mold closing and multi-stage pressurization functions to meet the rapid molding needs of BMC materials.
3. Optional in-mold core pulling control system and automatic ejector device are available to improve production efficiency. |
| Application Scenario | Mainly used in the production of high-strength, high-rigidity parts, such as automotive structural parts, aerospace parts, mechanical shells and so on. | Widely used in electrical parts, building structural parts, automobile shells, home appliance shells and other fields. |
| Degree of automation | Higher degree of automation, can be equipped with robots, automatic measuring and dividing machine and other equipment to realize fully automatic production. | The degree of automation is relatively low, but partial automation can be realized by optional automation device. |
The main differences between DMC and BMC hydraulic press machine are material properties, molding process and equipment design; DMC hydraulic press machine are more suitable for producing high-strength and high-precision parts, while BMC hydraulic press machine are more suitable for producing electrical parts and building structure parts. Users can choose the right type of hydraulic press machine according to production needs and material characteristics.
Recently, Shanghai ANTISHICNC team received an inquiry from a fluid equipment manufacturer. Based on the information of the customer’s workpiece, we recommended a 500-ton BMC four-column hydraulic press machine to the customer.
500 tons four-column hydraulic press machine consists of main machine, hydraulic system and electric control system, adopting PLC controller with electric heating function. The oil cylinder adopts piston cylinder structure, the cylinder body is rolled, the piston rod is tempered and the surface is hard chrome plated and polished, which is wear-resistant, beautiful and corrosion-resistant. Hydraulic control system adopts two-way cartridge valve integrated system. It has the advantages of small oil resistance, large through-flow, anti-pollution, fast response, high safety and reliability, as well as flexible control and easy maintenance.
| Description | YQ32-500T |
| Maximum liquid pressure (Mpa) | 25 |
| Slider stroke (mm) | 900 |
| Maximum opening height (mm) | 1500 |
| Table size (mm) | 1400*1400 |
| Down speed of empty range (mm/s) | 120 |
| Working speed (mm/s) | 6-15 |
| Return speed (mm/s) | 130 |
| Motor power (kw) | 30 |
| Oil pump displacement (ml/R) | 100 |
| Jacking force (T) | 100 |
| Ejection stroke (mm) | 300 |
Remark: The above parameters are for reference only, the actual parameters of the machine please refer to the technical program of Shanghai ANTISHICNC.
If you have the hydraulic press machine with heating function needs too, welcome to consult Shanghai ANTS Machine Equipment co., ltd. We have rich experience in manufacturing and using hydraulic press machine and can provide you with professional technical support.
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