CN1079934A

CN1079934A - Process for processing graphite resin mechanical sealing products

Info

Publication number: CN1079934A
Application number: CN 92106257
Authority: CN
Inventors: 柏峰; 王勇
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-06-18
Filing date: 1992-06-18
Publication date: 1993-12-29

Abstract

This technological method is the technical field of machinery sealing material processing, its technological method is with phenolic resin, plumbago, hexamethylenetetramine, whole or wherein several compositions in compound and the thinner are mixed by a certain percentage, the material for preparing is put into mixer, in temperature is to mix under 30～50 ℃ of conditions, and in the pressing mold of packing into, hot pressing temperature is 30～80 ℃, hot-forming with this condition, with pressure be added to spacing after, be warmed up to 120～180 ℃ immediately, be incubated 5～10 minutes, in order to curing.This technological method advantage: technology is easy, yield rate is high, cost is low, reduce pollution, temperature tolerance is good, mechanical strength is high, chemical resistance is strong.

Description

Process for processing graphite resin mechanical sealing products

The invention belongs to the technical field of machinery sealing material processing.Be particularly suitable for the production of graphite resin mechanical sealing products.

According to the data that can find at present " mechanical seal new structure atlas " arranged, (for the equipment designing technique center chief editor of the Ministry of Chemical Industry front page in 1980) and moral translation " mechanical seal " sixth version (E mayer work nineteen eighty-two version) the graphite resin seal ring that above-mentioned reference provided are (moving, quiet), loop material be with dipping and machining repeatedly repeatedly processing method and the graphite resin product produced, this technological method exists through repeatedly flooding, the program repeatedly of machining repeatedly, technology is numerous and diverse, yield rate is low, the cost height, shortcoming such as the monolithic article mechanical strength is low.

For solving the deficiency of above processing method, the invention provides a kind of hot press forming technology of using, the graphite resin goods are produced in once-through, promptly be to be contained in the mould after mixing with the whole or wherein several uniform ingredients in plumbago, resin, curing agent, the thinner, just can obtain smooth surface, accurate in size graphite resin goods in heating pressurization simultaneously.

Processing graphite resin mechanical sealing products technological process of the present invention is as follows:

Graphite pulverizing → sieve classification → batching → batch mixing → pulverizing → weighing is hot-forming → cooling → demoulding → inspection packing.

Required process conditions:

1, to material requirements:

Phenolic resin and high viscosity resins thereof

Plumbago :-80+300 order

Hexamethylenetetramine: chemical pure

Compound: other resinoid

Thinner: anhydrous alcohol

2, process parameter:

With above-mentioned raw material phenolic resin, plumbago, hexamethylenetetramine, compound, thinner is prepared burden by a certain percentage, confected materials is put in the mixer, in temperature is to mix under 30～50 ℃ of conditions, be broken into fine particle while mixing, pack in the pressing mold by the required weighing of goods specification size, hot pressing temperature is 30～80 ℃, limit pressure with limiting stopper, with pressure be added to spacing after, be warmed up to 120 °～180 ℃ immediately, be incubated 5～10 minutes, in order to curing, the demoulding is to carry out on stationary device, checks by the product technology conditional request, must carry out single bag during packing, avoid collision.

The present invention's advantage: utilize hot press forming technology to produce graphite resin mechanical sealing products, technology is easy, yield rate is high, cost is low, reduce pollution, the material temperature tolerance is good, the mechanical strength height, and chemical resistance is strong.

The present invention's embodiment:

Select material to form and proportioning by the MAT'L specification requirement.

Hot press forming technology technology implementation: phenolic resin, plumbago, hexamethylenetetramine, compound, thinner are broken into fine particle after mixing under 30 ℃ of conditions, put in the pressing mold, compression and moulding under 30 ℃ of conditions, be incubated 5 minutes, be warmed up to 180 ℃, solidified five minutes, after the cooling, the demoulding on fixing device is checked packing by the product technology requirement.

Claims

1, a kind of process for processing graphite resin mechanical sealing products is characterized in that 1, needed raw material is phenolic resin or modification high viscosity resins, plumbago, hexamethylenetetramine, compound and thinner; 2, technological process is graphite pulverizing → sieve classification → batching → mixing → pulverizing → weighing → hot-forming → cooling → demoulding → inspection packing.

2, by the described process for processing graphite resin mechanical sealing products of claim 1, it is characterized in that phenolic resin or modification high viscosity resins, plumbago, hexamethylenetetramine, compound and thinner are put in the mixer by a certain percentage, in temperature is to mix under 30～50 ℃ of conditions, be broken into fine particle while mixing, press the required weighing of goods specification size, and in the threading pressing mold, hot pressing temperature is 30～80 ℃, limit pressure with limiting stopper, to guarantee product size, when pressure be added to spacing after, be warmed up to 120 °～180 ℃ immediately, be incubated 5～10 minutes, in order to curing, the demoulding is to carry out on fixing device, checks by the product technology conditional request, and packing must be carried out single bag.