Electric water heaters also need to be "bathed". Deep cleaning needs to find professionals.

Many consumers are not sure that the electric water heater needs to be cleaned in time. As for the magnesium rod inside the electric water heater, it is even more difficult to know. In order to facilitate and better serve everyone, the reporter interviewed relevant professionals to popularize the knowledge of cleaning water heaters for your reference.

Did you know that electric water heaters also need to take a shower?

Ms. Zhang lives near the intersection of Qingyuan Street and Donggang Road. Her Haier brand water heater has been used for five years. During this period, she has not been cleaned. After seeing the report, she knows that the original water heater needs to be cleaned in time. “How the heating speed is getting slower and slower, it turns out that there is too much scale inside.” Ms. Zhang immediately contacted the professional cleaning water heater master, in order to thoroughly wash the water heater.

Ms. Huang, who lives in Xinhua District, recently found that the heating rate of the electric water heater purchased at home for two years has slowed down, and it will make a sound when heated. After consulting the sale, it is known that the water heater also needs regular cleaning and maintenance. Ms. Huang made an appointment for the after-sales staff to clean the door. The after-sales personnel cleaned the scale of the inner tank and the heating rod, and replaced the magnesium rod. The whole process cost more than 160 yuan. After cleaning, the noise disappeared and the heating speed returned to normal. "I didn't expect it to be two years, the scale will have a small half basin, and the magnesium rod inside is basically corroded, it is really shocking." Ms. Huang said.

It is understood that the magnesium rod is used to soften the water quality in the storage type electric water heater, the model is different, and the size of the magnesium rod is also different. The length ranges from 15 cm to 60 cm and the diameter is usually between 1.5 cm and 2.5 cm. The worse the water quality, the faster the magnesium rod is consumed, and the longer it is consumed, so it needs to be replaced regularly.

You can also clean it yourself

Master Xu, who has been engaged in water heater after-sales service for more than ten years, said that there are more scales in the north. For example, if Ms. Huang is used frequently, it is recommended to carry out deep cleaning for one to two years, up to three years. Otherwise, the heating will slow down, there will be noise during heating, the water quality will deteriorate, and the water will become smaller. Generally, the new type of electric water heaters have a sewage outlet, which can be cleaned regularly during daily use. The principle is to naturally flow out through the water in the inner tank, take away some of the deposited impurities and scale, and reduce the accumulation of scale, but remember to be sure Power off first.

Simple cleaning steps: first clean the water discharge port of the water heater, then turn off the water inlet valve. After the hot water in the gallbladder is cooled, open the sewage outlet and let the sewage flow out. After the sewage in the inner tank flows, open the inlet valve. The tap water flows into the inner tank and then flows out from the sewage outlet. Generally, the sewage valve is relatively lean, and it is troublesome to unscrew. To prevent the sewage from splashing, the electric water heater can be first removed and placed on the ground for cleaning.

Deep cleaning needs to find professional and regular after-sales personnel

Master Xu said that after 1-3 years of use of the electric water heater, the internal scale adheres to the inside of the magnesium rod and the inner liner and the heating rod, and is simply cleaned through the sewage outlet. The effect is not obvious. In particular, there is basically no effect on the scale attached to the inner liner and the heating rod, so professional and regular after-sales personnel are required for on-site cleaning. The magnesium rod can be replaced according to the consumption while cleaning.

Deep cleaning is generally divided into the following steps:

The first step: cut off the power supply, close the hot water angle valve; the second step: open the water heater sealing port, take out the insulation layer, release the water storage; the third step, the liner scale cleaning; the fourth step, the heating rod scale removal; The fifth step is to replace the magnesium rod.

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Graphite Block is a solid shape, which is usually made of artificial Graphite , graphite mould and so on. It also has small graphite blocks made of Flake Graphite , such as a carbon brush. Graphite is mostly powder, such as soil Graphite Powder , flake graphite and other powder.

Graphite blocks for silicon carbide furnace, graphite furnace and other metallurgical furnaces, resistance furnace for lining and conductive materials, and opaque graphite heat exchangers. Widely used in electronics, metallurgy, chemical industry, steel and other fields, the product quality is excellent, the performance is stable.


The function and use of high purity (isostatic pressure) graphite blocks

Production and processing of various materials, specifications of the graphite rods, graphite products, graphite block, graphite block, graphite plate, graphite tubes of rotary kiln, High Purity Graphite crucible, graphite ring, graphite boat graphite products, such as the opposite sex, with high temperature resistance, good thermal conductivity, melting high purity, strong corrosion resistance, long service life, etc. Create the graphite block of special rotary kiln in rotary kiln, including kiln head, kiln tail graphite block and Graphite Seal Block. With long service life, the attached impurity content is very few, with high volume density and strong anti-folding ability.


Graphite, graphite, soft, black grey; It has a greasy feel and can contaminate paper. The hardness is 1 ~ 2, and the hardness can be increased to 3 ~ 5 along the vertical direction with impurities. The proportion is 1. 9 ~ 2. 3. Scope of specific surface area is focused on the 1-20 m2 / g, under the condition of starvation, its melting point above 3000 ℃, is one of the most heat-resistant mineral. It conducts electricity and conducts heat.

There is no pure graphite in nature, which often contains impurities such as SiO2, Al2O3, FeO, CaO, P2O5 and CuO. These impurities often appear in the form of quartz, pyrite, carbonate and other minerals. In addition, there are water, asphalt, CO2, H2, CH4, N2 and other gas parts. Therefore, in addition to determination of fixed carbon content, the content of volatile and ash content must be measured.

The technological properties of Natural Graphite classification graphite are mainly determined by its crystalline form. The crystalline form of graphite minerals has different industrial values and USES.

1. Dense crystalline graphite:

Dense crystalline graphite is also called blocky graphite. Such graphite crystals are clearly visible to the naked eye. The particle diameter is greater than 0. 1mm, which is concentrated in 0.1-1m2/g than surface area, and the crystal is arranged in a disorganized and dense block structure. This kind of: the characteristic of graphite is high grade, the average carbon content is 60 ~ 65 %, sometimes reach 80 ~ 98%, but its malleable and slippery sex is not as good as flake graphite is good.

2. Special Graphite:

Graphene is widely used in industry and is used in almost every industry. Industrial use of synthetic graphite, or special graphite. According to its forming way can be divided into the following kinds.

1. Isostatic pressure graphite, the three high graphite that many people call, but not the third height is isostatic pressure.

2. Pressed graphite.

3. Extruded graphite, mostly electrode material.

(1) processing speed is faster: usually, graphite's machining speed can be 2~5 times faster than that of copper; The discharge process is 2~3 times faster than copper.

The materials are more difficult to deform: the advantages of the thin rib electrode are obvious. The softening point of copper is around 1000 degrees, which can be easily distorted by heat. The sublimation temperature of graphite is 3650 degrees. The thermal expansion coefficient is only 1/30 of copper.

(2) lighter weight: the density of graphite is only 1/5 of copper, and the large electrode can reduce the burden of machine tool (EDM). It is more suitable for use in large mould.

(3) smaller discharge consumption; Because the spark oil also contains C atoms, in edm, high temperature lead to spark came out of the oil C atoms are broken down, turned on the surface of Graphite Electrode form a protective film, compensate the loss of the graphite electrode.

(4) no burrs; After finishing, the copper electrode needs to be repaired by hand to remove the burrs. However, graphite processing has no burrs. It saves a lot of cost and is easier to realize automatic production.

(5) graphite is easier to grind and polish; Because graphite's cutting resistance is only 1/5 of copper, it is easier to grind and polish by hand.

(6) lower material cost and more stable price; Due to rising prices in recent years, and now isotropic graphite copper price is lower, under the same volume, the universality of toyotanso graphite products price is 30% ~ 60% lower than the price of copper, and the price is more stable, short-term price fluctuations is very small.

It is this incomparable advantage that graphite products gradually replace copper as the preferred material for EDM electrode.

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