CN102817848A

CN102817848A - Sliding plate of rotary compressor, and manufacturing method thereof

Info

Publication number: CN102817848A
Application number: CN2011101526256A
Authority: CN
Inventors: 夏小鸽
Original assignee: Guangdong Meizhi Compressor Co Ltd
Current assignee: Guangdong Midea Toshiba Compressor Corp; Guangdong Meizhi Compressor Co Ltd
Priority date: 2011-06-08
Filing date: 2011-06-08
Publication date: 2012-12-12
Anticipated expiration: 2031-06-08
Also published as: CN102817848B

Abstract

The invention relates to a sliding plate of a rotary compressor, and a manufacturing method thereof. The sliding plate is a metal ceramic composite with Fe as a matrix and a ceramic material or alloy material as a dispersed phase. Components of the sliding plate are as follows, by weight, 0.2-1.0% of C, 1-8% of Ni, 1-13% of Mo, 1-12% of Cr, 5-30% of ceramic, 0.5-17% of Mn, 0-10% of Cu, and the balance being Fe and inevitable impurities. The sliding plate provided by the invention can meet the requirements of high hardness, high strength, high toughness and high size precision without heat treatment and nitriding treatment, thereby simplifying production process. The obtained sliding plate product has micro-voids which have the function of storing lubricating oil, can effectively reduce friction coefficient of the sliding plate, and even play a self-lubricating effect under a condition of lacking oil, so that operation reliability of the rotary compressor can be further improved; and service life of the rotary compressor can be greatly prolonged.

Description

Slide plate of rotary compressor and preparation method thereof

Technical field

The present invention relates to slide plate of a kind of rotary compressor, particularly a kind of rotary compressor and preparation method thereof.

Background technique

Rotary compressor is because of it has the efficient height, little, in light weight the obtaining of volume widely applied; Slide plate is for pressing the important spare part that rotates the machine that contracts; The load p that pressure difference produces need be born in the slide plate both sides; And need be close to the piston in the rotary compressor, so the slide plate both sides reach and the piston contact segment is is very easily worn and torn, and need better sliding capability, fatigue resistance and wear resistance.

Slide plate generally is to be processed by stainless steel or Rapid Tool Steel; Stainless steel is not as carrying out the job requirement that nitriding its hardness of processing and wear resistance all are difficult to satisfy compressor; In order to improve slide plate hardness, wear resistance and corrosion resistance; Need carry out big quantity research to the slide plate material, and propose corresponding making method.

The production method that Chinese patent document number CN 1424510A discloses a kind of compressor sliding blade on June 18th, 2003, mainly may further comprise the steps: select materials (1): select following stainless steel, by weight percentage: C:0.95-1.2; Si is less than 1.00, and P is less than 0.04, and S is less than 0.03; Mn is less than 1.00, Cr:16.0-18.0, and Mo is less than 0.75; Ni is less than 0.60, and surplus is Fe and impurity thereof; (2) cutting, setting: the shape according to slide plate cuts out slide plate with wire cutting method, mills out groove with milling cutter again; (3) vacuum heat treatment; (4) grinding, polishing: six faces according to slide plate carry out grinding, polishing respectively; (5) gas nitriding: the slide plate after grinding, the polishing is carried out the ammonia nitriding; (6) grinding: the slide plate after the nitriding is ground to the surface again and meets the requirements.

The steel that adopt said method to need are confined to Rapid Tool Steel and high carbon stainless steel; These materials are not easy to obtain, price is higher, limited slide plate and further used, and manufacturing procedure is many; Need carry out nitriding handles; The material waste in preliminary working stage is many, causes the wasting of resources, and environment is brought very big harm

Summary of the invention

The object of the invention aims to provide that a kind of technology is simple, the slide plate of flexible operation, fabricating cost is low, hardness is high, intensity is high, toughness is high, dimensional accuracy is high, applied widely rotary compressor and preparation method thereof, to overcome deficiency of the prior art.

Press the slide plate of a kind of rotary compressor of this purpose design, it is characterized in that slide plate is is matrix with Fe, dispersed network phase is the ceramic-metal composite of stupalith and alloy material, and the component of slide plate is as follows by weight percentage: C 0.2～1%; Ni 1～8%; Mo 1～13%; Cr 1～12%; Pottery 5%～30%; Mn 0.5～17%; Cu 0～10%; Remainder is Fe and unavoidable impurities.

Said pottery is more than one in aluminium oxide, silica, zirconium oxide and the mullite.

The particle diameter of said pottery is not less than 200 orders.

The component of said slide plate also comprises Si, Si account for slide plate gross weight 0.1～10%.

A kind of making method of slide plate of rotary compressor is characterized in that may further comprise the steps:

Step a at first prepares burden in above-mentioned component ratio, then evenly and after the drying obtains mixed-powder through ball milling,

Step b packs mixed-powder in the mould into, through obtaining base just after hot-forming,

Step c carries out first base to obtain blank behind the sintering under ammonia decomposition atmosphere,

Steps d with carrying out finishing after the blank deburring, and arrives the dimensional accuracy that slide plate requires.

The present invention need not pass through prior heat treatment and nitriding and handle, and just can reach the requirement of high hardness, high tenacity, high tenacity, high dimensional accuracy, has simplified production technology; The slide plate finished product that obtains; Has micro-pore; This micro-pore has the function of storing lubricant oil, can effectively reduce the friction factor of slide plate, even under the oil starvation situation, can play self-lubricating function; Thereby further improve the operational reliability of rotary compressor, and prolonged the working life of rotary compressor greatly;

Manufacturing process of the present invention is simple, is near-net-shape production, can reduce equipment addition and environmental pollution, thereby cut down finished cost.The raw material that the present invention adopted is that China is rich in resource, and is with low cost.

Slide plate among the present invention had both had the impact toughness of metallic material, had the high hardness of stupalith and the characteristics of high wear resistance again.

In sum, the present invention have that technology is simple, flexible operation, fabricating cost is low, hardness is high, intensity is high, toughness is high, dimensional accuracy is high, applied widely

Description of drawings

Fig. 1 is the perspective view of one embodiment of the invention.

Embodiment

Below in conjunction with accompanying drawing and embodiment the present invention is further described.

The slide plate of this rotary compressor, slide plate are to be matrix with Fe, and dispersed network phase is the ceramic-metal composite of stupalith and alloy material, and the component of slide plate is as follows by weight percentage: C 0.2～1%; Ni 1～8%; Mo 1～13%; Cr 1～12%; Pottery 5%～30%; Mn 0.5～17%; Cu0～10%; Remainder is Fe and unavoidable impurities.

The particle diameter of said pottery is not less than 200 orders.

Above-mentioned step is carried out according to the sintering process of powder metallurgy basically.

First embodiment

During practical operation, (1) is at first chosen: C 0.8%; Ni 2%; Mo 2%; Cr 2.5%; Al ₂O ₃20%; Cu 1.5%; Mn 1.8%; Si 1.8%; Remainder is Fe and unavoidable impurities S 0.09%, then aforesaid component is put in the pebble mill, evenly and after the drying obtains mixed-powder through ball milling,

(2) the first base of compacting: in the mould of packing into after mixed-powder and the 5% adhesive mixing and stirring, obtain base just after process is hot-forming,

(3) sintering: first base is carried out obtaining blank behind the sintering under ammonia decomposition atmosphere; Sintering temperature is 1200 ± 5 ℃, and sintering time is 2 ± 0.5h, and molding pressure is 38MPa;

(4) finishing: with carrying out finishing after the blank deburring, and arrive the desired dimensional accuracy of slide plate.

Through after the above-mentioned steps, can obtain the slide plate that has stern notch as shown in Figure 1, at this moment, only need carry out two-sided mill and R4 processing to slide plate and get final product.

Mechanical property and the frictional behaviour of the slide plate that adopts technique scheme to obtain with the slide plate that adopts traditional stainless steel 9Cr18 to obtain compared, obtain following result.

Material	Hardness HRC	Resistance to flexure (σ av) MPa	Friction factor
				Material of the present invention	64.5	1300	0.075
Stainless steel (9Cr18)	65	500	0.090

Can obviously draw from last table, the slide plate that adopts technological scheme provided by the invention to obtain, its various performance parameters can satisfy rotary compressor the slide plate demand.

Second embodiment

During practical operation, (1) is at first chosen: C 0.4%; Ni 2%; Mo 3%; Cr 3%; Al ₂O ₃20%; Mullite 5%; Cu 1%; Mn 2%; Si 1.5%; Remainder is Fe and unavoidable impurities S 0.09%, then aforesaid component is put in the pebble mill, evenly and after the drying obtains mixed-powder through ball milling.

All the other are not stated part and see first embodiment, no longer repeat.

The 3rd embodiment

During practical operation, (1) is at first chosen: C 0.8%; Ni 2%; Mo 1.5%; Cr 2%; SiO ₂10%; Al ₂O ₃15%; Cu 1.5%; Mn 1.5%; Si 1.8%; Remainder is Fe and unavoidable impurities S 0.09%, then aforesaid component is put in the pebble mill, evenly and after the drying obtains mixed-powder through ball milling.

All the other are not stated part and see first embodiment, no longer repeat.

Claims

1. the slide plate of a rotary compressor is characterized in that slide plate is is matrix with Fe, and dispersed network phase is the ceramic-metal composite of stupalith and alloy material, and the component of slide plate is as follows by weight percentage: C 0.2～1%; Ni 1～8%; Mo 1～13%; Cr 1～12%; Pottery 5%～30%; Mn 0.5～17%; Cu 0～10%; Remainder is Fe and unavoidable impurities.

2. the slide plate of rotary compressor according to claim 1 is characterized in that said pottery is more than one in aluminium oxide, silica, zirconium oxide and the mullite.

3. the slide plate of rotary compressor according to claim 2 is characterized in that the particle diameter of said pottery is not less than 200 orders.

4. according to the slide plate of the arbitrary described rotary compressor of claim 1 to 3, it is characterized in that the component of said slide plate also comprises Si, Si account for slide plate gross weight 0.1～10%.

5. the making method of the slide plate of a rotary compressor as claimed in claim 1 is characterized in that may further comprise the steps: