阅读说明：本技术 一种基于机油调压阀柱塞制造的加工工艺 (A kind of processing technology based on the manufacture of pressure regulation of engine oil valve plunger ) 是由 杨波 周金海 梁国涛 于 2019-08-19 设计创作，主要内容包括：本发明公开了一种基于机油调压阀柱塞制造的加工工艺,包括柱塞和涂层,具体包括以下步骤：S1、合金粉末的混合制备：将铜、锌、铁、镍、碳化钨、碳化钛和金属氧化物这些粉末物料加入加热炉内,在1100-1300℃的温度条件下进行加热,加热2-4h后,使得该加热炉内的粉末原料被加热成液态合金,加热完毕后,本发明涉及柱塞加工技术领域。该基于机油调压阀柱塞制造的加工工艺,通过将合金粉末制备涂层并喷涂在柱塞表面,使得涂层与柱塞之间紧密贴合,该涂层具有较与铬保护层更强的耐磨以及抗腐蚀性,同时涂层与调压阀内壁的紧密接触,又起到了保护调压阀的作用,增加了该柱塞的使用寿命,同时也为后续调压阀的正常工作创造了良好条件。(The invention discloses a kind of processing technologys based on the manufacture of pressure regulation of engine oil valve plunger, including plunger and coating, specifically includes the following steps: S1, alloy powder are mixed with: these powder materials of copper, zinc, iron, nickel, tungsten carbide, titanium carbide and metal oxide are added in heating furnace, it is heated under the conditions of 1100-1300 DEG C of temperature, after heating 2-4h, so that the powder raw material in the heating furnace is heated to form liquid alloy, after heating, the present invention relates to plunger processing technique fields.The processing technology based on the manufacture of pressure regulation of engine oil valve plunger; by by alloy powder prepares coating and being sprayed on plunger surface; so that being fitted closely between coating and plunger; the coating have compared with chromium protective layer is stronger wear-resisting and corrosion resistance; the close contact of coating and pressure regulator valve inner wall simultaneously; play the role of protecting pressure regulator valve again, increase the service life of the plunger, while also creating good condition for the normal work of subsequent pressure regulator valve.)

1. a kind of processing technology based on the manufacture of pressure regulation of engine oil valve plunger, including plunger (1) and coating (2), it is characterised in that: tool Body the following steps are included:

S1, alloy powder are mixed with: by these powder materials of copper, zinc, iron, nickel, tungsten carbide, titanium carbide and metal oxide It is added in heating furnace, is heated under the conditions of 1100-1300 DEG C of temperature, after heating 2-4h, so that the powder in the heating furnace Powder stock is heated to form liquid alloy, and after heating, the slag on liquid alloy surface is removed, and then carries out to it cold But, the cooling air-flow for liquid alloy after cooling being atomized, and being sprayed by high-pressure air pipe is by hydraulic alloy graining at alloy Then alloy powder is filtered using the sieve of 160 meshes, the impurity in powder is screened out, can finally obtained by powder The alloy powder of spraying is placed spare；

S2, plunger (1) raw material select and the working process of plunger (1): select good plunger (1) raw material, according to Desired plunger (1) size carries out turning to raw material, and is prepared into plunger (1) shape of suitable dimension, then to it Heat treatment process, modifier treatment are carried out, so that quenching and tempering hardness is HRC25 °, then surface is carried out to it and carries out sanding and polishing, polishing After being polished to certain precision, the scrap on its surface is cleared up, guarantees that its surface is smooth lossless, without other impurity and greasy dirt；

The pretreatment work of S3, plunger (1): pretreatment heating work is carried out to plunger obtained in S2 (1), passes through heating coil Plunger (1) surface is preheated, concurrently setting temperature is 300-320 DEG C, it is therefore an objective to it is the moisture on removal plunger (1) surface, It is even closer to bond with coating (2) to improve plunger (1) surface temperature；

The processing work of S4, coating (2): it after plunger (1) preheating in S3 ends processing, is drawn off immediately, and pass through Plasma-spray technique can spray the surface of plunger (1), and spraying is uniform, so that final coating (2) is with a thickness of 0.6mm；

The final preparation of S5, plunger (1): the plunger (1) after spraying in S4 is put into heating device, and temperature control exists 900-1000 DEG C, after there is mirror surface phenomenon in coating (2) surface, then after being taken out and carrying out cooling treatment, final plunger (1) system It is standby to form.

2. a kind of processing technology based on the manufacture of pressure regulation of engine oil valve plunger according to claim 1, it is characterised in that: described Raw material in coating (2) includes: 7-10 parts of copper, 5-8 parts of zinc, 6-8 parts of iron, 5-8 parts of nickel, 3-5 parts of tungsten carbide, carbon by weight Change titanium 4-6 parts and metal oxide 8-10 parts.

3. a kind of processing technology based on the manufacture of pressure regulation of engine oil valve plunger according to claim 1, it is characterised in that: described Metal oxide in S1 is using sodium oxide molybdena.

4. a kind of processing technology based on the manufacture of pressure regulation of engine oil valve plunger according to claim 1, it is characterised in that: described Titanium carbide is to be heated to be made in electric furnace by bone black and titanium dioxide in S1, is the important component of hard alloy.

5. a kind of processing technology based on the manufacture of pressure regulation of engine oil valve plunger according to claim 1, it is characterised in that: described Tungsten carbide is a kind of compound being made of tungsten and carbon in S1.

6. a kind of processing technology based on the manufacture of pressure regulation of engine oil valve plunger according to claim 1, it is characterised in that: described Plasma spraying technology in S4 be heated the material to using the plasma-arc by DC powered as heat source melt or Semi-molten state, and to spray to the method for forming adhesion-tight superficial layer by pretreated workpiece surface at a high speed.

Technical field

The present invention relates to plunger processing technique field, specially a kind of processing work based on the manufacture of pressure regulation of engine oil valve plunger Skill.

Background technique

Pressure regulator valve can be described as pressure reducing valve substantially, and the working principle of pressure reducing valve is as follows: high-pressure medium is filled by an aperture Decompression to be realized in a relatively large chamber, is actually depressurized by shutting off, the two sides of diaphragm or piston is outlet plenum on one side, Be on one side artificially to pressure, and the valve rod for controlling aperture size is connected with diaphragm (piston), as long as giving a fixation in this way Pressure, then the pressure of outlet plenum will be equal to always this pressure, this pressure given by man can be by spring or gas Source or hydraulic power source provide.

The use of pressure regulator valve be unable to do without the work of plunger, plunger reciprocating motion long-term inside pressure regulator valve, it is not possible to keep away The meeting exempted from generates friction with pressure regulator valve inner wall, and existing plunger surface usually can all plate one layer of chromium protective layer, to reach wear-resisting The effect of protection, but since the hardness of chromium is very high, also exacerbates the damage inside pressure regulator valve, reduce the pressure regulating pump Service life.

Summary of the invention

(1) the technical issues of solving

In view of the deficiencies of the prior art, the present invention provides it is a kind of based on pressure regulation of engine oil valve plunger manufacture processing technology, Abrasion and chromium protective layer can be caused not to plunger and pressure regulator valve by solving plunger reciprocating motion long-term inside pressure regulator valve The problem of being able to satisfy actual use.

(2) technical solution

In order to achieve the above object, the present invention is achieved by the following technical programs: one kind being based on pressure regulation of engine oil valve plunger The processing technology of manufacture, including plunger and coating, specifically includes the following steps:

S1, alloy powder are mixed with: by these powder of copper, zinc, iron, nickel, tungsten carbide, titanium carbide and metal oxide Material is added in heating furnace, is heated under the conditions of 1100-1300 DEG C of temperature, after heating 2-4h, so that in the heating furnace Powder raw material be heated to form liquid alloy, after heating, the slag on liquid alloy surface is removed, then to its into Row cooling, liquid alloy after cooling is atomized, and by high-pressure air pipe spray cooling air-flow by hydraulic alloy graining at Then alloy powder is filtered using the sieve of 160 meshes, the impurity in powder is screened out, finally by alloy powder The alloy powder of spraying can be obtained, placement is spare, and nickel approximation silvery white has ductility and have ferromagnetic metal member firmly Element, it can high polish and anticorrosive, it is 7.14 grams/cc that zinc, which is a kind of silvery white slightly pale blue non-ferrous metal, density, Fusing point is 419.5 DEG C, and at room temperature, property is more crisp, at 100~150 DEG C, is softened, more than 200 DEG C after, and exsiccation, the chemistry of zinc Property is active, and in air at normal temperature, one layer of Surface Creation thin and compact basic zinc carbonate film can prevent further oxygen Change, after temperature reaches 225 DEG C, zinc vigorous oxidation；

S2, plunger raw material select and the working process of plunger: good plunger raw material are selected, according to desired Plunger size carries out turning to raw material, and is prepared into the plunger shape of suitable dimension, and heat treatment is then carried out to it and is added Work, modifier treatment so that quenching and tempering hardness is HRC25 °, then carries out surface to it and carry out sanding and polishing, sanding and polishing to certain essence After degree, the scrap on its surface is cleared up, guarantees that its surface is smooth lossless, without other impurity and greasy dirt；

The pretreatment work of S3, plunger: pretreatment heating work is carried out to plunger obtained in S2, passes through heating coil pair Plunger surface is preheated, and concurrently setting temperature is 300-320 DEG C, it is therefore an objective to for the moisture of removal plunger surface, improve plunger Surface temperature is even closer to bond with coating；

The processing work of S4, coating: in S3 plunger preheating end processing after, be drawn off immediately, and by etc. from Sub- spraying technology can spray the surface of plunger, and spraying is uniform, so that final coating, with a thickness of 0.6mm, plasma spraying is one The modified technology of kind of material surface strengthening and surface, can make matrix surface have wear-resisting, anti-corrosion, high temperature oxidation resisting, electrical isolation, The performances such as heat-insulated, radiation protection, anti-attrition and sealing；

The final preparation of S5, plunger: the plunger after spraying in S4 is put into heating device, and temperature is controlled in 900- 1000 DEG C, after there is mirror surface phenomenon in coating surface, then taken out carry out cooling treatment after, final plunger is prepared.

Preferably, the raw material in the coating includes: 7-10 parts of copper, 5-8 parts of zinc, 6-8 parts of iron, nickel 5-8 by weight Part, 3-5 parts of tungsten carbide, 4-6 parts of titanium carbide and 8-10 parts of metal oxide.

Preferably, the metal oxide in the S1 is using sodium oxide molybdena, sodium oxide molybdena chemical formula Na2O, molecular weight 61.979, the amorphous sheet of canescence or powder, 1275 DEG C of fusing point, 1950 DEG C of boiling point, density is 2.3 grams of per cubic centimeter, oxygen Change sodium to wet sensitive sense, easily deliquesce, meets water and play violent combination reaction, form sodium hydroxide, sodium oxide molybdena is melted in dark-red heat, In It is decomposed into sodium peroxide and sodium simple substance when greater than 400 degrees Celsius, sodium oxide molybdena is non-ignitable, has corrosivity, strong and stimulating, and human body can be caused to burn Wound.

Preferably, titanium carbide is to be heated to be made in electric furnace by bone black and titanium dioxide in the S1, is hard alloy Important component.

Preferably, tungsten carbide is a kind of compound being made of tungsten and carbon in the S1.

Preferably, the plasma spraying technology in the S4 is using the plasma-arc by DC powered as heat Source heats the material to melting or semi-molten state, and forms attachment jail to spray at a high speed by pretreated workpiece surface Gu the method for superficial layer.

(3) beneficial effect

The present invention provides a kind of processing technologys based on the manufacture of pressure regulation of engine oil valve plunger.Have following the utility model has the advantages that should Based on the processing technology of pressure regulation of engine oil valve plunger manufacture, it is mixed with by S1, alloy powder: by copper, zinc, iron, nickel, carbonization These powder materials of tungsten, titanium carbide and metal oxide are added in heating furnace, are added under the conditions of 1100-1300 DEG C of temperature Heat, after heating 2-4h, so that the powder raw material in the heating furnace is heated to form liquid alloy, after heating, by liquid alloy The slag on surface is removed, and is then cooled down to it, and liquid alloy after cooling is atomized, and is sprayed by high-pressure air pipe Alloy powder at alloy powder, is then filtered by cooling air-flow out by hydraulic alloy graining using the sieve of 160 meshes, Impurity in powder is screened out, the alloy powder of spraying can be finally obtained, is placed spare；S2, plunger raw material are selected And the working process of plunger: selecting good plunger raw material, carries out turning to raw material according to desired plunger size, and It is prepared into the plunger shape of suitable dimension, heat treatment process, modifier treatment then are carried out to it, so that quenching and tempering hardness is HRC25 °, then progress sanding and polishing in surface is carried out to it, after sanding and polishing to certain precision, the scrap on its surface is carried out clear Reason, guarantees that its surface is smooth lossless, without other impurity and greasy dirt；The pretreatment work of S3, plunger: to plunger obtained in S2 into Row pretreatment heating work, preheats plunger surface by heating coil, and concurrently setting temperature is 300-320 DEG C, purpose It is the moisture to remove plunger surface, it is even closer to bond with coating improves plunger surface temperature；The processing work of S4, coating Make: after the plunger preheating in S3 ends processing, being drawn off immediately, and can be to the surface of plunger by plasma spraying technology Spraying, spraying is uniform, so that final coating is with a thickness of 0.6mm；The final preparation of S5, plunger: by the column after being sprayed in S4 Plug is put into heating device, and temperature is controlled at 900-1000 DEG C, after mirror surface phenomenon occurs in coating surface, then is taken out progress After cooling treatment, final plunger is prepared, by by alloy powder prepares coating and being sprayed on plunger surface so that coating with Fitted closely between plunger, the coating have compared with chromium protective layer is stronger wear-resisting and corrosion resistance, while coating and pressure regulation The close contact of valve inner wall, and play the role of protecting pressure regulator valve, the service life of the plunger is increased, while being also subsequent The normal work of pressure regulator valve creates good condition.

Detailed description of the invention

Fig. 1 is the perspective view of structure of the invention；

Fig. 2 is the structural schematic diagram of coating of the present invention；

Fig. 3 is flow chart of the invention；

Fig. 4 is comparative experimental data statistical form figure of the present invention.

In figure: 1- plunger, 2- coating.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

Please refer to Fig. 1-4, the embodiment of the present invention provides three kinds of technical solutions: a kind of based on the manufacture of pressure regulation of engine oil valve plunger Processing technology, including plunger 1 and coating 2, specifically include following embodiment: