Electric power penetration pipe manufacturing approachTechnical field
The present invention relates to electric power penetration pipe preparation field, more particularly, relate to a kind of energy-efficient electric power penetration pipe manufacturing approach.
Background technology
The electric power penetration pipe is topmost when carrying out pre-treatment to be exactly rust cleaning, and the science way that eliminates rust at present is pickling, advantages such as efficient height, cost savings, but tube surfaces is smooth after the pickling, and return rust easily again, the adhesive force that is unfavorable for moulding layer.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the deficiency that exists in the prior art, and a kind of energy-efficient electric power penetration pipe manufacturing approach is provided.
Electric power penetration pipe manufacturing approach of the present invention, carry out according to following step:
A. base material enlarging: tubing one end is carried out enlarging handle;
B. acid pickling and rust removing: tubing is immersed in the acid solution;
C. phosphatization protection: the tubing after the pickling is carried out phosphatization handle, make tube surfaces form phosphating coat;
D. base material preheating: tubing travels at the uniform speed in tubing heating furnace thermally equivalent;
E. soak inside and outside and mould: tubing 70% is immersed in the fluid bed that contains fluidized powder carry out rotational moulding and interior suction plastic-coated;
F. heat levelling: the tubing of coating is put into heating levelling stove;
G. finished product is detected qualified back packaging and warehousing.
The present invention makes tubing after pickling, carries out phosphatization and handles, and causes the tubing surfaces externally and internally to form phosphating coat, and secluding air is not so the intact semi-finished product of pre-treatment can the pre-treatment phenomenon of doing over again occur because of the problem of plastic-coated operation and production efficiency problem again.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done and to further describe.
The present invention carries out according to following step:
1, base material enlarging, so that base material is when processing finished product, the convenient connection do not destroyed coating layer.It is the mode of science relatively during the electric power penetration pipe connects that enlarging connects, because of the function of electric power penetration pipe mainly is to resist external pressure, in case the water and soil corrosion, the effect of protection cable.Though enlarging connects can not pressure-bearing, makes things convenient for the cable threading, easy for installation, construction is simple, does not need the operating space;
2. after pickling, tubing is carried out phosphatization handle, cause tube surfaces to form phosphating coat, secluding air is not so the intact semi-finished product of pre-treatment can the pre-treatment phenomenon of doing over again occur because of the problem of plastic-coated operation and production efficiency problem again;
3. base material preheating: in the tubing heating furnace delivery chain is arranged, tubing is traveled at the uniform speed in stove, be heated evenly;
4. soak inside and outside and mould: make tubing carry out the surfaces externally and internally plastic-coated simultaneously, reduce the plastic-coated time, at utmost utilize heat, guarantee the coating layer thickness uniformity.The tubing of heating is clamped through removable powder case and the interior suction functional compartment with fluidisation powder delivery plastic-coated function in both sides each other; Tubing 70% is immersed in the fluid bed of fluidized powder and carries out rotational moulding and interior suction plastic-coated, the tubing that will reach coating layer thickness is at last sent in the levelling stove;
5. heating levelling: the tubing of coating moves in the stove that is heating and curing, and makes it the further levelling of coating, and is smooth, improve tubing brightness.
6. finished product is detected qualified back packaging and warehousing.
Embodiment recited above describes the preferred embodiment for the present invention; Be not that design of the present invention and scope are limited; Under the prerequisite that does not break away from design philosophy of the present invention; Common engineers and technicians make technical scheme of the present invention in this area various distortion and improvement all should belong to protection scope of the present invention.