CN106334718A - Method for producing composite wear-resistant product with thermoplastic matrix through extrusion molding - Google Patents

Abstract

The invention relates to a method for producing a composite wear-resistant product with a thermoplastic matrix through extrusion molding. The method comprises the following steps: A, preparation of a matrix material: heating the prepared matrix material to ductility temperature for subsequent usage; B, extrusion forming: applying pressure on the matrix material so as to allow the matrix material to obtain a desired shape or specification; C, pressurization and compounding: pressing a hard material into the matrix material via pressure to allow the two materials to be fused, fastened and clamped together so as to obtain a finished extrusion product; and D, heat treatment: subjecting the finished extrusion product to heat treatment so as to obtain the composite wear-resistant product with the thermoplastic matrix. The composite wear-resistant product prepared by using the method has the advantages of high wear resistance, high shock resistance and applicability to complex working conditions like high wearing, and has prolonged comprehensive service life compared with traditional wear-resistant products.

Description

A kind of extrusion molding production method of the complex abrasion-proof product of thermoplastic matrix

【Technical field】

The present invention relates to a kind of manufacturing of wear resistant products, especially relate to a kind of extrusion molding production method of the complex abrasion-proof product of thermoplastic matrix.

【Background technology】

Used in industrial circle, high-abrasive material and wear resistant products are generally divided into metal material and two kinds of hard material, metal wear resistant material plasticity and toughness are good, it is suitable for requiring wear resistant products to have certain plastic deformation ability, especially there is the operating mode of greater impact power, but due to due to production technology and production cost, the metal wear resistant material using in the market or the wearability of abrasion-resistant metal product have limitation, extremely short in the operating mode service life of most of serious wear, serious have impact on the continuous production of manufacturing enterprise and the control of maintenance cost；And the performance of hard material (especially wear-resistant ceramic material) is just contrary with metal wear resistant material, the high-wearing feature itself having can resist all kinds of abrasions in commercial production substantially, but because its fragility is big, the characteristic of plastic-less deformation limits it is impossible to use in the operating mode having impact or need certain plastic deformation.In order to solve the contradictory problems of wearability and plasticity and toughness, occur in that and metal wear resistant material and hard material are carried out compound technique, output various wearing composite materials and composite manufacturing technology.

But due to metal and hard material, the difference of the especially physics of rigid non-metallic material and chemical property, it is extremely difficult for so that both is effectively fused together, because most of common metal high-abrasive materials and hard wear-resistant material do not possess mutual wellability, even if there being individual metal can infiltrate with hard material, but because the wearability of this metalloid is limited and manufacturing cost superelevation, be not suitable for Industry Promotion.And analyze from combination process, domestic at present have absorbed research metal and hard material fusion technique, but equally exist more problem, hard material fully wrapped around fusion process in the matrix of metal wear resistant material, a large amount of cavities are had in product after molding, the manufacturing defect such as isolation strip, crackle, and whole product fracture failure when being impacted in the case, is easily made because of Defect expanding；And hard material is to solve the problems, such as internal flaw in the surface recombination of metal wear resistant material, but have to pass through Technology for Heating Processing because metal matrix material goes for preferable wearability, and the hard wear-resistant material on surface is relatively low due to the thermal coefficient of expansion of itself and shrinkage factor, easily ftracture under conditions of chilling with anxious heat broken, wear-resisting effect can not be played, integral product is made to be not applied for Technology for Heating Processing, also the wearability of matrix cannot be improved, thus greatly reducing the service life of such joint product.

【Content of the invention】

It is an object of the invention to provide a kind of extrusion molding production method of the complex abrasion-proof product of thermoplastic matrix is it is intended to solve the problems, such as that in prior art, the wear resistant products impact resistance that metal and nonmetallic materials are composited and anti-wear performance be not good.

The present invention is achieved in that a kind of extrusion molding production method of the complex abrasion-proof product of thermoplastic matrix, comprises the steps:

A. matrix material prepares: matrix material is ready to, is heated to plastic temperature stand-by；

B. extrusion forming: by pressure is applied so as to be deformed into shape or the specification of needs to matrix material；

C. pressurize compound: using applying pressure, rigid non-metallic material is pressed in matrix material, so that bi-material is merged it is ensured that it mutually melts, fastens and clamps, obtain extruding finished product；

D. heat treatment: extruding finished product is carried out heat treatment, obtains the complex abrasion-proof product of thermoplastic matrix.

The invention has the beneficial effects as follows: due to adopting extrusion process, difference using the plasticity and toughness under bi-material hot conditionss and comprcssive strength, a kind of material is made to enter the method in another kind of material matrix by pressure, simultaneously under the guarantee of pressure, consistency within matrix material is continuously increased, another kind of material of press-in can closely be wrapped, not only eliminate the defects such as cavity, crackle, eliminate potential Problem of Failure, and refinement matrix grain degree is played a role, the intensity for improving matrix material simultaneously is played an important role with plasticity and toughness；Bulged-in material especially hard material is due to there being the protection of matrix material; in the case of running into chilling or anxious heat; it is slow intensification or cooling that temperature is directed into when being pressed into material; so effectively avoid the cracking of hard material it is ensured that its original physical property (as wearability)；It is achieved thereby that complex abrasion-proof product can realize various heat treatment modes, improve the wearability of matrix material, thus the overall wearability improving complex abrasion-proof product, be integrally improved the service life of final products；There is high abrasion, high impact-resistant, be applied to the complex working conditions such as high abrasion using the wear resistant products of this method manufacture, and the manufacture of the wear-resisting finished product of all kinds of shapes and specification can be realized by technology controlling and process, its Comprehensive service life can be improved for relatively conventional wear resistant products.

【Specific embodiment】

The present invention relates to a kind of extrusion molding production method of the complex abrasion-proof product of thermoplastic matrix, comprise the steps:

A. matrix material prepares: matrix material is ready to, is heated to plastic temperature stand-by.This step is intended to make matrix material obtain preferable plasticity and toughness, possesses preferable plastic deformation and soft condition.

B. extrusion forming: by pressure is applied so as to be deformed into shape or the specification of needs to matrix material；The size and dimension of matrix material deformation can be designed according to actual needs, meet the manufacture of the different in nature or non-standard wear-resisting spare part of special operation condition needs.

C. pressurize compound: using applying pressure, rigid non-metallic material is pressed in matrix material, so that bi-material is merged it is ensured that it mutually melts, fastens and clamps, obtain extruding finished product.This process selects hot extrusion.

D. heat treatment: extruding finished product is carried out heat treatment, obtains the complex abrasion-proof product of cold plasticity matrix.

Hard material (espespecially ceramic material) key property is partially crisp, plastic-less deformation's ability, thermal coefficient of expansion (and expandable characteristic after being heated) is relatively low with shrinkage factor (shrinkage during cooling) simultaneously, so cannot rapid expanding or contraction simultaneously inside and outside hard material when by chilling or anxious heat, the easily cracking broken phenomenon when internal stress increases to marginal value, lose its serviceability, the abrasion-resistant metal product that this characteristic largely limits a lot of hard materials (espespecially ceramic material) carries out heat treatment, eventually affect the whole service life of wear resistant products.

And this technique can be by ceramic tight metallic matrix by way of pressure or forging; in heating, ceramic material can be not directly contacted with thermal source; avoid anxious thermo-contact; but progressively can heat up with during metallic matrix heat conduction; metallic matrix defines effectively anxious hot thermal insulation layer; it is achieved thereby that the mode being slowly heated, same quenching process is similarly subjected to protect and enters the process of a Slow cooling, and is slowly heated and can avoid the cracking of ceramic material with Slow cooling and crush；And, because metal matrix material is that tight has lived ceramic material under stress, microfissure and also can be wrapped gift constraint in technical ceramicses material, crackle will not be made to continue to be extended to macroscopic cracking, have no effect on macroscopical anti-wear performance of pottery.

So, this technique achieves metal matrix material ceramic material undamaged effect in heat treatment process, the wearability of metal matrix material can be increased substantially simultaneously, during actually used, metal matrix material and ceramic material all play higher wearability, so that the whole service life of wear resistant products is increased substantially.

By way of pressure processing, metal matrix material is combined with each other with rigid non-metallic material, metallic matrix consistency after pressure processing improves, grain size is effectively refined, and hard material can effectively be wrapped in matrix material, play the abrasionproof effect of key, can possess the performance of heat treatment, the overall service life improving wear resistant products simultaneously.

After metal is combined with nonmetallic materials, not only obtain retaining metal plasticity and toughness and the composite better than metal wear resistant material and product, simultaneously because the density of nonmetallic materials is far below metal material, so making integral product achieve light-weight design, when equipment runs can greatly reducing energy consumption, be to save energy consumption cost using enterprise.

This technique can be using in conventional fabrication processes, after certain production link carries out effective transformation of equipment, realize manufacturing the higher product of added value using current production line, for example: the technique adding pressure processing in the production link of traditional rolled plate, it is that rigid non-metallic material is directly entered in the sheet material of rolling, realize the batch production of wear-resisting steel plate, thus realizing for direct for general steel plate deep processing becoming wear-resisting steel plate, and the market value of wear-resisting steel plate is 5-10 times of general steel plate market value.

The consumption of high-abrasive material resource largely saved by the composite of this technique manufacture, simultaneously can be using the waste material of other industries or leftover pieces, but still keep the waste recovery of preferable wearability, be combined with this technique, realize resource reutilization energy-conserving and environment-protective circulation manufacturing industry chain.

The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any modification, equivalent and improvement made within the spirit and principles in the present invention etc., should be included within the scope of the present invention.

Claims (1)

1. a kind of extrusion molding production method of the complex abrasion-proof product of thermoplastic matrix is it is characterised in that comprise the steps:

A. matrix material prepares: matrix material is ready to, is heated to plastic temperature stand-by；

B. extrusion forming: by pressure is applied so as to be deformed into shape or the specification of needs to matrix material；

C. pressurize compound: using applying pressure, hard material is pressed in matrix material, so that bi-material is merged it is ensured that it mutually melts, fastens and clamps, obtain extruding finished product；

D. heat treatment: extruding finished product is carried out heat treatment, obtains the complex abrasion-proof product of thermoplastic matrix.