FAQ
1. How many countries have DJM exports?
More than 30 countries and regional
2. How many series of products DJM have？
a)Concrete Block & Pavers Making Plant
b)AAC Blocks & Bricks Making Plant
c)Concrete batching Plant
d)Stone crusher
3. What’s kinds of raw material can produce concrete block?
Sand, stone, stone powder, cement, fly ash, slag, steel slag, coal gangue, ceramsite, perlite, construction waste, etc., but the specific formula ratio needs to be confirmed by technicians when encountering special raw materials.
4. What’s the feature of Panasonic touch screen?
Reliability: It has strong resistance to shock and vibration;
The panel adopts an integrated seamless design, which is very dustproof, waterproof and oil resistant;
The high-brightness color display makes it easy to see the screen and perform correct manipulation even under strong light.
High-performance 32-bit ARM7 CPU processing chip, 8M large memory, enabling the device to have fast maneuver response time；
5. The products height of DJM block machine:
QT3-20、QT4-15、QT5-15、QT6-15、QT8-15、QT9-15, QT10-15、QT12-15, 、QT15-15, 、QT18-15, Height：50mm-200mm
6. About the proportion
The proportion of aggregates, sand, cement, and the proportion of water in general hollow bricks，88%:10%:2%, The ratio of raw materials changes according to the strength requirements of the product.
7. The requirement of particles of raw material?
Particles of sand：0—3mm
Particles of stone：1-3mm，，2—5mm，3—8mm & 8—12mm Generally, our stone requirements are within 10mm.
8. How many square meter of factory size required by Simple production line?
Total among 3000-5000㎡，including raw material stroage 300-400㎡，main machine 300-400㎡，Curing area 800㎡，finished products 2000m²
9. What’s the worker required and the feature of simple production line, semi-automatic production line and fully automatic production line ?
Simple production line: generally using bagged cement, no cement weighing system and central control system, and the degree of automation is a bit low. Natural curing, about 10 workers are required. The machine cost is only a little.
Semi-automatic production line: using bulk cement, cement metering system and centralized control system, the degree of automation is relatively high. Natural conservation and about 8 workers are required. The producing line cost is from $20,000 to $80,000, it depend on the capacity requirement.
Fully automatic production line: automatic batching – weighing – stirring – brick making, automatic transfer – curing – palletizing, pallet recycling, production automation, natural conservation or steam curing. However, the input cost is relatively high and about 3 workers are required. The producing line will cost about $350,000 to $400,000.
10. 9. How to cure the wet block?
One) Natural withering ;
Two) Steam curing at a certain temperature and humidity in the curing room;
Three) Naturally air-dried in curing room.
11. What is the strength of the brick in addition to the material of the aggregate?
Our moulds are all heat treated and carburized, with higher hardness and strength. The general life of the mould can reach 9 million times press, but it is also closely related to customer maintenance.
12. What is the life time of the mould?
Our moulds are all heat treated and carburized, with higher hardness and strength. The general life of the mould can reach 9 million times press, but it is also closely related to customer maintenance.
13. What is the control system for fully automatic production line?
There are two control panels with one power cabinet for one fully automatic line , there are many component adopts Panasonic, so we will offer one control room to prevent component from dust .
14. How many days for the natural curing of the block?
Usually , the fresh block need one night for inside curing, after that, transfer block out do water curing, it need 5-7days .
15. What are the life time of the different pallets?
Usually , the fresh block need one night for inside curing, after that, transfer block out do water curing, it need 5-7days .
16. What is the resistance of ordinary hollow bricks and paving blocks? How to change the resistance of bricks?
Hollow brick is about 8-10MPA, paving block is about 25-30MA;
you can adjust the proportion, there are many ways, like adjusting the specific gravity and label of cement, adding admixture, the exciting force and vibration time, improving the curing method and so on to improve the brick’s anti-pressure.
17. What is the stacker?
The stacker can automatically stack, stabilize the pallets with blocks and save labors.
18. What are the characteristics of the central control room?
Concentrate control cabinets and wall cabinets in the control room, centralized control, saving manpower;
Dust proof to ensure the stability of the electrical system;
Soundproofing, with air conditioning, to provide a comfortable working environment for operators;
Closed, only authorized personnel can enter the control room, to achieve confidentiality and protection control system from the purpose of human damage, improve the safety of the production process.
19. What is the function of the screw conveyor?
To transfer the cement from the silo or unpacking bucket to the measuring hopper of the mixer.
20. What is the consumption of cement per shift for QT10-15 and the capacity of the silo?
The demand for cement in each shift is about 20-30t. If the factory is convenient to transport cement, using 50t silo is already enough, otherwise 100t will be better.
21.Do you provide warranty and how long?
A:Our warranty is 1 year, see the details in the reference.
22. If technical malfunction happens or machinery parts break down, would you provide technical support?
A:Yes,we have professional and experienced engineers supporting you on the spot or through the net.
23. What ‘s the delivery time?
Basically, 45 working days for standard voltage in T/T payment,50~60 working days for non-standard voltage.
24. What if the spare parts were broken?
A: You could purchase some essential spare parts for stock and we will provide a list of quick-wear parts for you.
25. What is the general consuming electrics per day?
A: It depends on the automation level of the line. Normally,we only utilize 80% of full power.
26. How many areas should the line take up?
A: It varies from 3000~4000 square meters to 7000~10000 square meters. The bigger place you have, you will more place to put the raw material and cured blocks, It is decided by your demand.
27. How many bins of batcher can choose?
We have three kinds, 2 bins, 3hins & 4 bins, usually we suggest equired 3 bins , it can save time to loading raw material, what’s more, It is easy to change recipe if find some good for replace stone.
28. What’s the sizes of batcher?
2*4m³, 3*4m³&4*4m³, each hopper can enlarge to 6m³.
29. What’s kinds of sand as raw material?
River sand of 0-3mm will be the best for machine to making the blocks.
30. How to choose mixer?
We have two series of mixer , twin-shift mixer and planetary mixer. normally, use twin-shift mixer like JS500 for 0.5m³per time, JS750 for 0.75m³per time and JS1000 for 1m³per time.
31. How long is the Warranty period of your equipment? Does your company supply the spare parts?
The warranty period of crusher equipment is one year. Yes, we supply the spare parts for you at lowest cost and we have a professional after-sale service team to promptly and thoroughly solve your problems.
32. Are you factory or trade company?
A: We are the manufacturer, have our own independent factory
33. Where your products have been exported before?
A: Our products have been sold to South Asia, Africa, South America, middle East and so on.
34. How will you help the customer to install the equipment?
A: Our senior engineer will guide the installation and commissioning as well as the initial production.
35. How about the wear parts supply?
A: We offer wear parts to our customer with our most favorable price. If there are problems you could not handle, we will send our technicians to your place and you are therefore, responsible for all the cost involved.
36. What about the payment method?
A: T/T, L/C Paypal is available
37. What about after-sale service?
A: 12 months warranty for all kinds of products.
38. Are you factory or trading company?
A: We are 20+ years manufacturing experience factory.
39. Do you provide design for us?
A:Yes, we will provide engineer design service before order.
40. What's the delivery time?
A:15-25 days.
41. Do you provide installation service?
A: Yes, we will send our engineer go to your working site to guide installation and commissioning.
42. Payment terms?
A: TT, LC.