CN1393306A

CN1393306A - Method for manufacturing chain

Info

Publication number: CN1393306A
Application number: CN 01113158
Authority: CN
Inventors: 宣碧华
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-06-29
Filing date: 2001-06-29
Publication date: 2003-01-29

Abstract

A technology for manufacturing chain features that the surfaces of chain plates and rollers are blackened, the surfaces of pins are chemically nickeled, and the sleeve tubes are made up through proportioning powdered raw materials, shaping, high-temp. sintering, heat treating and vacuum immersion in oil. Its advantages are high antiwear and high anticorrosion nature, and long service life.

Description

A kind of manufacture method of chain

The present invention relates to a kind of manufacture method of chain.

At present, the chain that traditional technology is made is very low work-ing life in wear-resisting, anti-corrosion occasion, common precision roller chain, in use attrition is fast, corrosion resisting property is poor, often needs maintaining, as oil addition fat etc., time limit in work-ing life is short, can not satisfy user's strict demand.Below be the explanation of traditional technology manufacturing process: the manufacturing process of carrier bar is as follows: material is that highquality carbon steel is sent out orchid through punching out, thermal treatment, polishing, surface, antirust forming oils.The manufacturing process of bearing pin is as follows: material is that low-carbon alloy steel forms through blanking, cylindrical grinding, thermal treatment, polishing, antirust processing.The manufacturing process of roller is as follows: material is that soft steel forms through cold pier, thermal treatment, polishing, antirust processing.The telescopic manufacturing process is as follows: material be soft steel through roll, thermal treatment, antirust the forming of polishing, oil.

The object of the present invention is to provide a kind of wear-resisting, corrosion resisting property is superior, and is non-maintaining, the oil-free chain of long service life and manufacture method thereof.

For achieving the above object, the present invention has adopted following technical scheme: a kind of manufacture method of oil-free chain, with constitute chain carrier bar, bearing pin, roller, handle by following processing step respectively: (1) is shaped; (2) thermal treatment; (3) polishing; (4) surface treatment, (5) assemble above-mentioned each parts, are characterized in that the step of described carrier bar, roller surface treatment process is: (a) degreasing; (b) washing; (c) table is transferred; (d) surface blackening; (e) washing; (f) clear water is washed; (g) saponification; (h) dehydration; (i) oil; (j) de-oiling.

The step of described bearing pin process of surface treatment is: (a) workpiece; (b) rust cleaning; (c) oil removing; (d) clean; (e) activation; (f) clean; (g) preheating; (h) soak in the chemical nickel-plating solution; (i) clean; (j) drying; (k) thermal treatment.

The step of described sleeve complete processing is: (a) powder ingredients; (b) be shaped; (c) high temperature sintering; (d) thermal treatment; (e) vacuum intruded pitch.

Owing to adopted technique scheme, the maintenance self-lubricating chain that special process is made is in use wear-resisting than common precision roller chain, corrosion resisting property is superior, does not need to safeguard (non-maintaining), and work-ing life is more lasting than common precision roller chain.After carrier bar blackout is handled, form a kind of special epithelium on the carrier bar surface, this epithelium can prevent to rotate, the contact between the sliding part surface metal, therefore sintering can not take place, bite isotactic and resemble.The epithelium oil absorbency on carrier bar surface is good, and the treat surface oilness is improved.Slight revolution mark in the time of can removing mechanical workout by the blackout processing.It is the solidity to corrosion epithelium that blackout is handled the epithelium that forms, and greatly improves the product corrosion resisting property, (presses GB 3%CuSO through assay ₄The solution corrosion test).The solidity to corrosion of the self-lubricating chain carrier bar that blackout is handled can surpass 20 minutes, and after blue processing of common precision roller chain carrier bar surface, begins to be corroded after 60 seconds.After the bearing pin chemical nickel plating is handled, have high rigidity and high-wearing feature, under sedimentation state, coating hardness is HV500-550 (HRC49-55).Hardness is HV900-1000 (HRC69-72) after 400 ℃ of processing.Test shows under dry and lubricated situation, all to have the wear resistance that is equivalent to hard chrome.Have good corrosion stability, the bearing pin of chemical nickel plating has good corrosion stability in salt, alkali, ammonia and seawater.Few, fine and close, any surface finish of chemical nickel plating electroless plating Ni-P alloy layer hole.Chemical nickel plating is handled superior self lubricity.The advantage of powder metallurgy sleeve, roller.The part of powder metallurgy processed is a kind of porous crack part, handles by vacuum oil immersion, makes to be full of lubricating oil in the part base solid, just need not add grease more like this in the process of running of chain, has reached non-maintaining self-lubricating effect.Powdered metal parts with the powder metallurgical technique manufacturing can reach high intensity and good wear resistance energy, and Chinese People's Anti-Japanese Military and Political College's gas oxidisability is better.Be widely used in stressed higher, wear-resisting requirement and the occasion that can not often safeguard arranged.

Below by embodiment technical scheme of the present invention is further described.

Embodiment 1: the manufacture method of the chain of present embodiment, with constitute chain carrier bar, bearing pin, roller, handle by following processing step respectively: (1) is shaped; (2) thermal treatment; (3) polishing; (4) surface treatment, (5) assemble above-mentioned each parts, and the step of described carrier bar, roller surface treatment process is: (a) degreasing; (b) washing; (c) table is transferred; (d) surface blackening; (e) washing; (f) clear water is washed; (g) saponification; (h) dehydration; (i) oil; (j) de-oiling.The step of described bearing pin process of surface treatment is: (a) workpiece; (b) rust cleaning; (c) oil removing; (d) clean; (e) activation; (f) clean; (g) preheating; (h) soak in the chemical nickel-plating solution; (i) clean; (j) drying; (k) thermal treatment.The step of described sleeve complete processing is: (a) powder ingredients; (b) be shaped; (c) high temperature sintering; (d) thermal treatment; (e) vacuum intruded pitch.

Claims

1, a kind of manufacture method of chain, with constitute chain carrier bar, bearing pin, roller, handle by following processing step respectively: (1) is shaped; (2) thermal treatment; (3) polishing; (4) surface treatment, (5) assemble above-mentioned each parts, it is characterized in that the step of described carrier bar, roller surface treatment process is: (a) degreasing; (b) washing; (c) table is transferred; (d) surface blackening; (e) washing; (f) clear water is washed; (g) saponification; (h) dehydration; (i) oil; (j) de-oiling.

2, the manufacture method of chain as claimed in claim 1 is characterized in that the step of described bearing pin process of surface treatment is: (a) workpiece; (b) rust cleaning; (c) oil removing; (d) clean; (e) activation; (f) clean; (g) preheating; (h) soak in the chemical nickel-plating solution; (i) clean; (j) drying; (k) thermal treatment.

3, the manufacture method of chain as claimed in claim 1 is characterized in that the step that described sleeve adds technology is: (a) powder ingredients; (b) be shaped; (c) high temperature sintering; (d) thermal treatment; (e) vacuum intruded pitch.