[Offer to Sell]

C66Y DOUBLE ARM FOLLOW-UP CONTROL FULLY HYDRAULIC OPEN DIE FORGING HAMMER

Follow-up control fully hydraulic open die forging hammer is a kind of electric-hydraulic hammer operated by follow-up valve and drove by fully hydraulic driving system. The lower chamber of its cylinder is connected to high pressure oil always, and follow-up valve controls the upper chamber oil in and out to realize striking and return. When upper chamber connecting to high pressure oil, it will drive cylinder to get pressure difference and with ram gravity to realize quick striking; when oil discharging from upper chamber, oil will act on circle area of lower chamber and conquer ram gravity and relevant friction force to realize return.
Advantages
Its principle decides its advantages, as bellow:
1) Avoid oil and gas mixing, and air leakage;
2) When return, there is no back pressure in upper chamber, so return is fast and with high striking frequency;
3) Upper and lower between piston, there are both hydraulic oil, so the sealing working environment is improved a lot and extend its life;
4) Lower chamber is connecting to high pressure always, so the ram can return at once after striking and short die contacting time;
5) Hydraulic system pressure is stable, so it is easy to realize striking energy precise control.
6) Such hammer is a kind hammer that can instead of hydra-pneumatic hammer with its advantages, such as simple structure and lower malfunction.
Structure and performance features:
It fully refers to successful experience of China hydra-pneumatic hammer, and surpassed it on structure, safety, easily of maintenance, as bellow:
1. hydraulic driving system structure
1) there are only main cylinder and accumulator on driving system, and tie plate inner is no need anti-high pressure welding, its structure is simple and reliable;
2) there is not adding air system and auxiliary air system, so its structure is simpler; and main system is connected by pre-stressed bolts to improve connecting reliability;
3) accumulator is moving down whole and supported on waist part to improve its stability;
4) soft connecting and locating for driving system and tie plate to protect piston rod and connecting bolts;
5) guide bush of piston rod is using high and low pressure double anti-leakage structure, and imported step seals, so its sealing is reliable;
6) Using feedback explosion-proof hydraulic valve (patent) and special high pressure tube protecting structure to prevent high pressure oil leakage in special condition.
2. striking system structure
Double arm hammer (including die hammer with anvil and open die forging hammer)
1) using radioactivity guide rails to improve ram guiding accuracy;
2) adding connecting bar for two arms to improve hammer body precision stability;
3) hammer body is to be a closed frame by connecting bar, and ram is moving in the frame to improve hammer working accuracy and reduce malfunction.
4) Reasonable design, and fine manufacturing make this hammer improve a lot on reliability, stability, safety, easily of maintenance and life.
3. Performance features:
1) single bar operation can realize ram slow up, slow down, striking, return, fast return, stop in any position, continuous striking with different stroke and frequency, and its operation is simple and easy;
2) when ram moving, there is not inertial empty in hydraulic cylinder, its action is coherent;
3) fast oil in mouse and fast oil out mouse are both control by servo, so it can avoid wrong action like hydra-pneumatic hammer, and safety;
4) Main valve is with features of slide valve moving and taper valve sealing, to improve controlling and sealing of valves mouse opening and closing, to reduce system inner leakage;
5) Main control valves is servo valve designed by CFM, with wide application, and can meet requirement of 1-20 ton die forging hammer and 1-10 ton open die forging hammer;
6) System oil consumption can be monitored; when system need more oil consumption, many pumps will with load; when system need few oil consumption, some pumps will with load, other pumps will w

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