The basic skills of home purchase basic materials

Waterproof coating ingredient is the key

The importance of waterproof coatings in home furnishings is undoubted, but how do you choose? Water-repellent application experts advise that when purchasing waterproof coatings, in addition to selecting relatively well-known brands, they should also pay attention to raw material ingredients. For example, coatings with better water-repellent properties should normally contain “silicone-modified acrylics,” and others use “core shells”. "Technology, more cutting-edge is containing "organic fluorine", these products should be excellent.

It is understood that currently available waterproof coatings on the market can be roughly divided into three types: modified asphalt waterproof coatings, which are used in conjunction with glass fiber cloth, the project is relatively complex; polyurethane waterproof coatings, these coatings are generally used containing toluene, two Toluene and other components of the organic solvent dilution, containing toxicity; recently the city of silicone rubber waterproof coating, the coating is mainly made of polymer synthesis technology, has a good waterproof, moisture-proof function, and the construction is relatively simple.

How to judge the quality of cement?

At first glance, see if the cement's paper bag packaging is intact and the logo is complete. The labels on the paper bags are: factory name, production license number, cement name, registered trademark, variety (including variety code), label, packaging year, month, date and number. In the second batch, the cement powder was rubbed with a finger and felt a little fine, sand, and powder, indicating that the cement fineness was normal. Third, look at the color, observe whether the color is dark gray or dark green, and the strength of the cement that is yellowish and whitish is relatively low. Four look at the time to see the production date of cement. Cement performance beyond the valid period of 30 days has declined. After three months of storage, the strength of the cement decreased by 10% to 20%, decreased by 15% to 30% after six months, and decreased by 25% to 40% after one year. High-quality cement can be solidified in more than 6 hours. Cement that does not solidify for more than 12 hours is of poor quality.

Tips:

It is best to add the words “must conform to national standards” to the purchase contract or invoice, and at the same time it is best to leave a sample in the construction. Once the project is completed, it can be used as a judgment because of the indoor environment pollution caused by Daxinban quality problems. The basis of responsibility.

Daxin board should not be too heavy

Blockboard, commonly known as the big core board in the row, is made of two pieces of veneer that are spliced ​​together. In the middle of the blockboard is a core made of natural wood sticking, with very thin veneer on both sides, which is one of the most important materials in the decoration. Can do furniture and package doors and door covers, heating covers, curtain boxes, etc., its waterproof and moisture-proof performance is better than particleboard and MDF. When selecting large core boards, the focus is on the internal wood, which should not be too crushed. Blockboards with a gap of about 3 mm between woods are appropriate. Many consumers choose Daxin board, a look at weight, and second look at price. In fact, the weight exceeds the normal size of the core board, indicating the use of miscellaneous wood. The large core board made of mixed wood cannot be used because it cannot be nailed.

Use E1 grade or higher products

Home decoration can only use E1 level Daxin board. The formaldehyde content of the E2 grade large core board may also be more than 3 times that of the E1 level large core board, so it cannot be used for home decoration. Secondly, it is necessary to purify and close the large core boards that cannot be finished, especially the interior of the interior boards, the interior panels of the cabinets, and the heating hoods. At present, experts have developed formaldehyde sealants, formaldehyde-enclosed waxes, and aerosols that eliminate and seal formaldehyde. The best results have been achieved at the same time. Generally, about 100 square meters of room do not use more than 20 large core boards. Excessive use may cause excessive formaldehyde in the indoor environment. In particular, do not use a large core board as a liner below the floor.

How to choose a quality Daxin board

A look at the manufacturer's trademark, production address, anti-counterfeit signs. Secondly, see if the formaldehyde emission in the product test report is less than or equal to 1.5 mg per litre. General regular manufacturers have test reports, the lower the detection value of formaldehyde, the better. Third, look at the appearance quality of Daxin board. To see if the surface of the Daxin board is smooth, whether it is warped or deformed, or whether there is bubbling or dent; the blockboard can be cut open at the scene or during construction to observe whether the inner wick is even and tidy, and the gap is as small as possible. Four to see if there is odor. If the large core board emits a fragrance of wood, it means that the amount of formaldehyde released is less; if the smell is pungent, it means that the amount of formaldehyde released is more, do not buy it.

Decoration Materials Knowledge Decoration Materials Purchase Materials Cement Coatings Formaldehyde Home Decoration Glass Furniture Glass Doors

Our company have German SEW Motor, Japan Mitsubishi Controller. Our own brand Hofic servo motor and controller. Chinese famous brand SEJ motor and Holip controller.

About our German SEW Motor and Japan Mitsubishi Controller: It is easy to find the ideal energy-efficient motor for your application at SEW. The series has a suitable design in its range for the globally applicable efficiency classes. Select the power and frequency within this motor design and you have already taken care of the most important selection criteria.All other motor options are of course available independently of the efficiency class. A comprehensive braking concept and cost-optimised built-in encoders ultimately complement the motor range. Comprehensive braking concept and combinations i.e. up to three different brake sizes per motor size featured in the range: Cost-optimised built-in encoders integrated into the motor. Motors for efficiency classes IE1 to IE4.Compact design saves space and costs. Future-proof, also as regards environmental protection (standards). Reduction in operating costs when using energy-efficient motors; our energy-efficient motors conform to the efficiency classes.

About servo High Speed Door Servo Control System: Our rolling gate servo control system is suitable for high speed and high usage soft and hard rolling gate. The whole system is in a small and light package, it has high torque and high operating speed, lower noise, high reliability, smooth and soft operating curves, it`s suitable for high speed and usage environment. The rolling curtain can be controlled by pull switch, push button, Bluetooth, ground radar, ground magnetic sensors. Operating Speed: 1M/s; Operating Width: ＜16 ㎡; Daily operating time: ＞2000 time; Rated voltage: 220v; Rated Output: 0.75 KW/1.5KW.

The system can operated via: 1) control box; 2) inching electronic control; 3) continuous automatic operation; 4) emergency stop; 5) single side operation box; 6) time delay; 7) ground radar and/or magnetic sensors. Please refer to Wiring Terminal for eternal connections.

System has fuse/safety wire shutdown switch for three-phase power protection, fuse/safety wire for operating circuit protection, and temperature sensing relay for motor protection.

Stroke Controller utilizes absolute value encoder. Connect the absolute value encoder and reducer via encoder`s axle, and fix the wings on to the reducer, than insert the aviation plug into plug receptacle.

The mounting screw for the control box must inspect regularly to prevent screw been getting loose and falling off. Check the internal and external wirings. Check and change the oil for the redactor on regular basis.

Precision: The system use Full closed-loop servo control and Double Encoder design. This is to ensure long operating life and to prevent overshooting during operating.

Stability: The system utilizes integrated design concept, in order to simplify internal wiring and prevent any function caused by wiring and terminal connections.

High Speed: Motor max speed is 2500 rpm; door max operating speed is 2 m/s.

Smooth: The torque servo system can adjust torque to the load automatically, and its speed curve mode step less speed regulating to ensure a smooth operation.

About SEJ motor and Holip controller: Three-phase asynchronous motor with magnetic brake has broad uses, It is suitable for various mechanical main drive and auxiliary drive, and it is also used for various required rapid stopping and correct positioning. The braking time within 0.2 second. Electric motor is added the DZM series direct current electromagnetic arrester by the basic series(Y series) electric motor.The protection class of electric motor part is IP44,the arrester part is IP23.if be applicable to bad environment can also make the arrester part into IP44,but customer have to put forward a special request while ordering,the manufactory can design a manufacturing exclusively. Its structure diagram is picture 1 and 2,picture 1 is the structure with hand release.Picture 2 is the structure without the hand release.Its operating principle BE, after being to make the retardation coil(6)to connect direct current power supply,because of the function of electromagnetic force,electromagnet(7)attract gag bit(5),and compress spring(24),make arrester disc(2)away from the friction surface of the gag bit(5)and shield(26)(the electrical motor can immediately operate normally).When the power supply cuts off after,the electromagnet(7)loses electromagnet force,the spring(24)releases the gag bit(5)and compress tightly to arrester disc(2),the arrester function,stop(the motor shaft)quickly,make electric motor shop turning to move,for the second time connect power supply will repeat above-mentioned action.

High Speed Door Motor And Control Box

High Speed Door Motor And Control Box,High Speed Door Motor,High Speed Door Servo Motor,Variable-Frequency Servo Motor

Shenzhen Hongfa Automatic Door Co., Ltd. , http://www.hongfadoor.com